Annals of Thoracic and Cardiovascular Surgery
Online ISSN : 2186-1005
Print ISSN : 1341-1098
ISSN-L : 1341-1098
Current issue
Displaying 1-39 of 39 articles from this issue
Original Article
  • Chihiro Furuta, Motoki Yano, Yuka Kitagawa, Ryotaro Katsuya, Naoki Oze ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00206
    Published: 2024
    Released on J-STAGE: April 10, 2024
    JOURNAL OPEN ACCESS

    Purpose: Details of the neogenesis of bullae (NOB), which causes recurrent primary spontaneous pneumothorax (PSP) following bullectomy, have not been reported and risk factors for NOB remain unclear. We aimed to clarify the details of NOB.

    Methods: We conducted a prospective study using three computed tomography (CT) examinations performed 6, 12, and 24 months after bullectomy to identify the incidence of and risk factors for NOB. We enrolled 50 patients who underwent bullectomy for PSP.

    Results: After excluding 11 patients who canceled the postoperative CT examination at 6 months after bullectomy, only 39 patients were analyzed. The incidence of NOB at 6, 12, and 24 months after bullectomy was 38.5%, 55.2%, and 71.2%, respectively. The rate of NOB in the operated lung was almost 2 times higher than that in the contralateral nonoperative lung. Male sex, multiple bullae on preoperative CT, long stapling line (≥7 cm), deep stapling depth (≥1.5 cm), and heavier resected sample (≥5 g) were suggested to be risk factors for NOB.

    Conclusions: We recognized a high incidence of postoperative NOB in PSP patients. Bullectomy itself seems to promote NOB. Postoperative NOB occurs frequently, especially in patients who require a large-volume lung resection with a long staple line.

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  • Takashi Suzuki, Satoshi Yajima, Akihiko Okamura, Naoya Yoshida, Yusuke ...
    2024 Volume 30 Issue 1 Article ID: oa.24-00028
    Published: 2024
    Released on J-STAGE: April 05, 2024
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    Purpose: This study aimed to determine the clinicopathologic and prognostic significance of squamous cell carcinoma antigen (SCC-Ag) in patients with esophageal SCC who underwent radical surgery without neoadjuvant therapy.

    Methods: This study included 566 patients with primary esophageal SCC who underwent radical resection without neoadjuvant therapy at 15 Japanese hospitals between 2008 and 2016. The cutoff value of SCC-Ag was 1.5 ng/mL based on the receiver operating characteristic curves. Preoperative SCC-Ag and postoperative SCC-Ag were analyzed to evaluate clinicopathological and prognostic significance. Survival curves were compared between the SCC-Ag-positive group and the SCC-Ag-negative group. The prognostic impact of SCC-Ag was evaluated using univariate and multivariate analyses.

    Results: The preoperative SCC-Ag-positive rate was 23.5% (133/566). SCC-Ag-positive status was significantly associated with old age (p = 0.042), tumor depth (p <0.001), and tumor stages (p <0.001). The preoperative SCC-Ag-positive group had significantly poorer overall survival than the SCC-Ag-negative group (p = 0.030), but it was not an independent predictor of poor prognosis. Postoperative SCC-Ag-positive status was an independent risk factor for poor overall survival (p = 0.034).

    Conclusion: Both pre- and postoperative SCC-Ag-positive statuses were significantly associated with poor prognosis. Postoperative SCC-Ag-positive status was an independent risk factor for predicting overall survival.

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  • Masaya Tamura, Takashi Sakai, Naoki Furukawa, Marino Yamamoto, Ryohei ...
    2024 Volume 30 Issue 1 Article ID: oa.24-00009
    Published: 2024
    Released on J-STAGE: April 02, 2024
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    Purpose: This study evaluated the Controlling Nutritional Status (CONUT) score as a prognostic predictor in elderly non-small cell lung cancer (NSCLC) patients with surgical resection.

    Methods: Overall, 114 patients over 80 years old undergoing curative resection for NSCLC were retrospectively analyzed. Receiver operating characteristic (ROC) analysis was conducted to evaluate the capacity of immune-inflammatory markers to predict overall survival (OS). Cox-proportional hazards regression analysis was implemented to investigate prognostic markers for OS.

    Results: Based on ROC curves, the CONUT score was found to be the most valuable prognostic marker (area under the curve = 0.716). The high CONUT (≥2) group included 54 patients, and the low CONUT (0 or 1) group included 60 patients. The high CONUT group had poorer prognosis rates compared to the low CONUT group with regard to OS (5-year OS: 46.3% vs. 86.0%, p = 0.0006). In the multivariate data analysis, histology, lymphatic invasion, and CONUT score (hazard ratio: 4.23, p = 0.0003) were found to be exclusive and independent prognostic markers for OS.

    Conclusion: Preoperatively, the CONUT score can be used as a novel prognostic marker in elderly NSCLC patients. CONUT evaluations can also be used to design nutritional interventions to improve patient outcomes.

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  • Wenrui Li, Lei Jin, Hai Feng, Xueming Chen, Zhiwen Zhang
    2024 Volume 30 Issue 1 Article ID: oa.24-00015
    Published: 2024
    Released on J-STAGE: March 26, 2024
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    Purpose: The objective of this study was to evaluate the safety, efficacy, and feasibility of percutaneous mechanical thrombectomy (PMT) through a below-the-knee (BTK) approach for acute lower extremity deep venous thrombosis (DVT).

    Methods: A retrospective review of DVT patients treated with PMT by the BTK approach at our center from April 2022 to August 2023 was performed. Their preoperative demographics, intraoperative data, and postoperative outpatient outcomes were analyzed.

    Results: A total of 12 patients (67% men; mean age, 63 years) met the inclusion criteria. The BTK approach was successfully achieved in all patients through the posterior tibial vein (n = 1), anterior tibial vein (n = 2), and peroneal vein (n = 9). PMTs were achieved in 11 (92%) patients. Successful lysis (grade II and grade III lysis) was achieved in all patients with PMT. Four (33%) patients had residual venous occlusion over the popliteal vein. No intraoperative complications or bleeding events occurred in any of the patients.

    Conclusion: PMT via BTK puncture seems to be a safe and effective approach for treating lower extremity DVT. It is reserved for highly select patients with a low risk of bleeding and is performed at centers that have experience with this procedure.

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  • Onur Derdiyok, Ugˇur Temel
    2024 Volume 30 Issue 1 Article ID: oa.23-00110
    Published: 2024
    Released on J-STAGE: February 29, 2024
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    Purpose: To present the clinical experience in video-assisted thoracic surgery (VATS) of first rib resection for patients with neurogenic thoracic outlet syndrome (NTOS).

    Methods: The files of 13 patients (10 males, 3 females) having unilateral NTOS undergoing first rib resection via VATS were retrospectively investigated. The symptoms, operative times, durations of chest tube and hospital stay, complications, and postoperative courses were analyzed. All patients underwent VATS using a camera port and 3–5 cm utility incision.

    Results: There was no morbidity. The average operation time was 81 ± 11 min (range 65–100 min). Chest tubes were removed in the first or second postoperative day (mean 1.23 ± 0.43 days). The mean postoperative length of hospital stay was 2.1 ± 0.9 days (range 1–3 days). The average duration of follow-up was 19 ± 13 months (range 2–38 months). Ten patients completed a follow-up during 6 months. One patient (10%) had minor residual symptoms, and the remaining patients (90%) were fully asymptomatic.

    Conclusion: The VATS approach in the resection of the first rib for thoracic outlet syndrome is a safe method. It should be performed with acceptable risks under experienced hands. The magnified view and optimal visualization from the scope are beneficial. Avoiding neurovascular bundle retraction may seem to decrease the postoperative pain.

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  • Yukio Umeda, Shinsuke Matsumoto, Kiyohiko Hagiwara, Shoji Yoshikawa, A ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00180
    Published: February 06, 2024
    Released on J-STAGE: February 06, 2024
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: This study aims to evaluate the factors associated with the higher hospitalization cost of lung resection for primary lung cancer to contribute to the reduction of healthcare spending.

    Methods: A total of 435 consecutive primary lung cancer patients who underwent lung resection by a single surgeon at a single institution were enrolled. Baseline patient characteristics, operative procedures, postoperative complications, and postoperative courses were analyzed in relation to the hospitalization cost. Patients with higher costs (exceeding the third quartile [TQ]) were compared with patients with lower costs (less than TQ).

    Results: Median and TQ medical costs for overall cases were 11177 US dollars (USD) and 12292 USD, respectively. Smoking history, history of coronary artery disease, previous thoracotomy, multiple sealant material use, transfusion, tumor factor T3 or higher, squamous cell carcinoma, postoperative complications, and longer postoperative hospital stay (>10 POD) were significant risk factors for increased hospitalization cost in multivariate analysis. The 5-year survival rate was significantly lower in the higher hospitalization cost group.

    Conclusion: In addition to postoperative complications and prolonged hospitalization, patient background, histological types, and intraoperative factors were also considered as the risk factors for higher medical costs.

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  • Min-Seok Kim, Seong Wook Hwang, Ki-Bong Kim
    2024 Volume 30 Issue 1 Article ID: oa.23-00154
    Published: February 01, 2024
    Released on J-STAGE: February 01, 2024
    JOURNAL OPEN ACCESS

    Purpose: The aims of the present study were to examine sternal and saphenous vein (SV) harvest site wound complication rates, and to assess the strategies to minimize the sternal and leg wound complications after coronary artery bypass grafting using a no-touch (NT) SV.

    Methods: Patients who underwent coronary artery bypass grafting (CABG) using internal thoracic artery (ITA) and/or NT SV grafts from March 2021 to June 2023 (N = 166) at a newly opened cardiac surgical program were included. We obeyed the current guidelines for the prevention of sternal wound infection. In addition, unilateral ITA was used in most of the patients and the sternal wound was meticulously closed using multiple sternal wires (≥7) and ZipFix. For the NT SV harvesting, the LigaSure device was used to minimize thermal injury, and the wound was meticulously closed.

    Results: Sternal wound infections developed in 3/166 (1.8%) patients; all three patients showed superficial sternal wound infections. Leg wound complications were present in 2/153 (1.3%) patients, who recovered after secondary intention healing.

    Conclusion: Sternal wound complications after CABG could be minimized by the unilateral ITA usage, meticulous closure of the sternal wound in addition to compliance with the current guidelines. Wound complications after NT SV harvest may also be minimized by preoperative evaluation, careful harvesting, and meticulous wound closure.

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  • Masaya Aoki, Ryo Miyata, Go Kamimura, Aya Harada Takeda, Takayuki Suet ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00134
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: December 16, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: Tegafur–uracil (UFT) is the standard postoperative adjuvant therapy for stage IB lung adenocarcinoma (LUAD) in Japan. This study aimed to determine whether UFT is effective in stage IB LUAD with and without epidermal growth factor receptor (EGFR) mutations.

    Methods: This retrospective study included 169 patients with stage IB LUAD who underwent complete resection at our department between 2010 and 2021. We investigated the clinicopathological and prognostic impact of EGFR mutations as well as the postoperative use of UFT.

    Results: EGFR mutation-positive cases tended to show a higher cumulative recurrence rate than EGFR mutation-negative cases (p = 0.081), while overall survival was comparable between the groups (p = 0.238). In the entire cohort, UFT administration was not an independent prognostic factor in the multivariate regression analysis (p = 0.112). According to a stratification analysis, UFT administration was independently associated with favorable overall survival (p = 0.031) in EGFR mutation-negative cases, while it was not associated with recurrence-free survival (p = 0.991) or overall survival (p = 0.398) in EGFR mutation-positive cases.

    Conclusion: UFT administration can improve the prognosis of EGFR mutation-negative LUAD but not EGFR mutation-positive LUAD. Thus, clinical trials of adjuvant-targeted therapy for EGFR mutation-positive stage IB LUAD should also be conducted in Japan.

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  • Atsushi Osoegawa, Miyuki Abe, Michiyo Miyawaki, Takashi Karashima, Yoh ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00146
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: November 30, 2023
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    Purpose: Robot-assisted thoracic surgery (RATS) has become popular because of its minimally invasive nature and reduced burden on surgeons. The anterior approach (AA) is beneficial because it utilizes the same field of view and procedures as thoracotomy and video-assisted thoracic surgery, although the disadvantages are less well-known.

    Methods: We retrospectively examined 35 consecutive patients who underwent RATS lobectomy via the AA, focusing on clinical factors and postoperative complications.

    Results: The study included 12 males and 23 females with a median console time of 177 (120–346) min, median blood loss of 0 (0–100) mL, and median stapler usage of 5 (2–10) units. Postoperative complications, classified as Clavien–Dindo grade ≥III, included three cases of grade IIIa (prolonged air leakage) and one case each of grade IIIb and grade IVa (middle lobe torsion and ventricular arrhythmia). The influence of stapling device operation cannot be ruled out in prolonged air leakage and middle lobe torsion. A moderate correlation (correlation coefficient = 0.492, p = 0.003) was observed between console time and the number of staplers used.

    Conclusion: Although no severe incidence of vascular injury was observed with the AA, complications related to the use of stapling devices were noted.

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  • Liangwan Chen, Zhihuang Qiu, Yunnan Hu, Yue Shen, Guanhua Fang, Heng L ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00131
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: November 21, 2023
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    Purpose: The conventional surgical treatment for postinfarction left ventricular aneurysm (LVA) is open-heart repair with cardiopulmonary bypass. However, the risk of the open-heart surgery under cardiopulmonary bypass may result in an unacceptable risk for many patients with multiple comorbidities. Here, we reported a new off-pump repair technique for postinfarction apical LVA.

    Methods: A new off-pump repair technique, circular banding and occlusion technique, was applied to repair the postinfarction apical LVA in 12 patients. Clinical data of all those 12 patients were retrospectively reviewed. Patients were followed up prospectively by direct interviews and echocardiographic examination.

    Results: The new repair technique was successfully performed in all these 12 patients. Acute reduction of the LVA mouth diameter, the left ventricular (LV) end-diastolic volume and end-systolic volume, and an increase in the LV ejection fraction (EF) were immediately obtained after the repair. Patients had an uneventful postoperative course. They were in New York Heart Association class 1–2, and the LV volume and EF detected by echocardiography remained unchanged during an average 28.4 ± 9.9 months (range 13 to 45 months) follow-up.

    Conclusions: Circular banding and occlusion is a simple, safe, and effective off-pump repair technique for postinfarction apical LVA. It can allow effective LV remodeling and improve heart function.

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  • Jasmin H. Shahinian, Harry Lappiere, Juan Grau, David Glineur
    2024 Volume 30 Issue 1 Article ID: oa.23-00084
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: October 28, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: Reimplanting the radial artery in the left internal thoracic artery as a composite graft allows total arterial revascularization (TAR) without aortic manipulation. The limitation of this strategy is the length of the radial artery required to reach distal right coronary artery (RCA) branches. Our analysis focuses on the feasibility of this strategy.

    Methods: A total of 169 patients underwent TAR using the radial artery in a composite grafting configuration. Length of the radial artery, number of sequential anastomoses, heart size, target location, length of the arm, patient height, body surface area, and flow in the composite graft were prospectively collected.

    Results: The mean length of the radial artery was 18.02 cm. Patients with a mean length of the radial artery of 15.9 cm needed an extension of the radial artery with another conduit to reach the RCA distal branches. When T-configuration is used, the length of the radial artery should be 0.53 cm per sequential anastomosis to reach the RCA distal branches.

    Conclusions: Our study shows that an average length of 18.02 cm of radial artery is needed to reach targets on the RCA distal branches in composite grafting. In T-configuration, we need 0.53 cm more length per anastomosis to achieve TAR.

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  • Yuki Orimoto, Hiroyuki Ishibashi, Takahiro Arima, Yusuke Imaeda, Yuki ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00098
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: October 24, 2023
    JOURNAL OPEN ACCESS

    Purpose: We aimed to investigate the effects of initial abdominal aortic aneurysm (AAA) diameter on aneurysmal sac expansion/shrinkage, endoleaks, and reintervention postelective simple endovascular aneurysm repair (EVAR).

    Methods: Overall, 228 patients monitored for >1 year after EVAR were analyzed. Male and female participants with initial AAA diameters <55 mm and <50 mm, respectively, composed the small group (group S), while those with initial AAA diameters ≥55 mm (men) and ≥50 mm (women) composed the large group (group L). Aneurysmal sac expansion of 10 mm and/or reintervention during follow-up (composite event) and its related factors were evaluated.

    Results: The 5-year freedom from composite event rate was significantly higher in group S (92.4 ± 2.8%) than that in group L (79.1 ± 4.9%; P <0.01). Multivariate analysis revealed AAA diameters before EVAR in group S (hazard ratio, 0.38; 95% confidence interval, 0.18–0.81; P = 0.01) and type II endoleak (T2EL) at discharge (hazard ratio, 2.83; 95% confidence interval, 1.29–6.20; P <0.01) as factors associated with the composite event. The freedom from composite event rate decreased to 51 ± 13% at 5 years in group L with T2EL.

    Conclusions: Group S had high freedom from composite event rate; in group L, the rate decreased to 51% at 5 years with T2EL at discharge.

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  • Kohei Abe, Hiroyuki Nishi, Kazuma Okamoto, Hitoshi Yokoyama, Hirokuni ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00089
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: September 29, 2023
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    Purpose: Coronary anastomosis is the most key factor to accomplish coronary artery bypass grafting, which is one of the largest areas in cardiovascular surgery. Although we have organized on-site simulator training courses of coronary anastomosis using BEAT YOUCAN, it became difficult to continue it because of COVID-19. Therefore, we established a real-time evaluation sheet instead of an Objective Structured Assessment of Technical Skills (OSATS) evaluation sheet. The purposes of this study was to develop the real-time assessment system and to prove the correlation between the score obtained by the OSATS and the score obtained by the real-time evaluation system.

    Subjects and Methods: A total of 22 videos from the qualifying round of real-time coronary anastomosis competition evaluated by both the modified OSATS and the real-time evaluation system were utilized in this study. The global rating score of OSATS was compared with the global rating score of real-time evaluation system.

    Results: When examined the relationship between the OSATS total score and the real-time total score, there was a significant correlation (R = 0.752, p <0.001). The OSATS general definition score and the real-time total score also showed a strong correlation (R = 0.733, p <0.001).

    Conclusions: We developed a real-time assessment sheet to evaluate coronary anastomosis. This assessment sheet had a good correlation with the OSATS evaluation sheet.

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  • Georgi Manchev, Vassil Gegouskov, Vladimir Kornovski, Georgi Yankov, ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00086
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: September 20, 2023
    JOURNAL OPEN ACCESS

    Purpose: The distal suture line during aortic dissection repair can be performed by a closed technique or by an open technique. This study presents a retrospective comparison of both methods regarding their postoperative outcomes.

    Patients and Methods: 120 patients who underwent surgery for acute aortic dissection type A were divided into two groups. In group A (n = 81), open distal anastomosis was performed under hypothermic circulatory arrest and selective cerebral perfusion. In group B (n = 39), distal anastomosis was performed with the aorta cross-clamped under mildly hypothermic cardiopulmonary bypass. Primary outcomes were operative mortality, neurologic morbidity, and long-term survival.

    Results: Hospital mortality (17.3% for the open group vs. 12.8% for the closed group, p = 0.53), permanent neurologic dysfunction (8.7% vs. 8.3%, p = 1.0), and temporary neurologic dysfunction (31.9% vs. 22.2%, p = 0.298) were not significantly different between groups. No significant difference in actuarial 5- and 10-year survival was observed (88% vs. 86% and 53 vs. 73%, respectively, p = 0.396). After propensity-score adjustment, the technique of distal aortic repair was not found to be a predictor of the primary outcomes.

    Conclusion: We conclude that the open repair can be used in most if not all cases of surgical repair of type A acute aortic dissection.

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  • Bing Han, Zheng Qin, Peirui Chen, Liqiang Yuan, Mingqiang Diao
    2024 Volume 30 Issue 1 Article ID: oa.23-00025
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: September 20, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: Functional preserving sublobectomy (FPSL), a novel balancing strategy for segmentectomy and wedge resection, allows rapid and accurate removal of invisible nodules without the use of any preoperative localization markers. This study aimed to share single-center experience of lateral dorsal basal lung resection based on FPSL, so as to provide new surgical options for thoracic surgeons.

    Methods: A retrospective analysis was performed on 13 patients who underwent thoracoscopic basal lung resection after FPSL at XX hospital from January 2021 to August 2022.

    Results: The operation was successfully performed in 13 patients by using FPSL, including 12 patients with malignant tumors. The mean operating time was 107.5 ± 25.6 min. The mean postoperative hospital stay was 3.7 ± 2.4 days. None of the patients needed extended excision, such as an entire basal or inferior lobectomy.

    Conclusion: Our single-center experience showed that the FPSL method only dealt with the target vessels, which greatly reduced the technical difficulty of surgery. In addition, both arteries and veins could be used as target vessels, and in particular cases such as undeveloped interlobar fissure, the operation could still be completed successfully. Lateral dorsal basal lung resection based on FPSL may be a new surgical option for surgeons.

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  • Tomohiro Watanabe, Yoshikane Yamauchi, Ryo Takeyama, Shinya Kohmaru, H ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00115
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: August 30, 2023
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    Purpose: A prolonged air leak (PAL) is one of the common postoperative complications of pulmonary resection. The aim of this study was to evaluate the efficacy and safety of pleurodesis with sterile talc or OK-432 for postoperative air leak.

    Methods: Patients with postoperative air leak who received chemical pleurodesis using sterile talc or OK-432 were retrospectively identified from medical records data. For pleurodesis with either agent, prior assessment and approval by the hospital safety department were carried out for each case, in addition to individual consent.

    Results: Between February 2016 and June 2022, 39 patients had PALs and underwent chemical pleurodesis. Among them, 24 patients received pleurodesis with talc (Talc group) and 15 with OK-432 (OK-432 group). The leak resolved after less than two pleurodesis treatments in 22 patients (91.7%) in the Talc group compared with 14 patients (93.3%) in the OK-432 group. Pleurodesis significantly increased white blood cell counts, C-reactive protein concentration, and body temperature in the OK-432 group compared with that in the Talc group (p <0.001, p = 0.003, and p <0.001, respectively).

    Conclusions: Pleurodesis with talc may be an effective treatment option for postoperative air leak. Our findings suggest that talc was as effective as OK-432 and resulted in a milder systemic inflammatory response.

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  • Yukiharu Sugimura, Moritz Benjamin Immohr, Arash Mehdiani, Udo Boeken, ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00076
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: August 03, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: This study aimed to elucidate the strategy of an effective Impella support for better clinical outcomes in patients with a postcardiotomy cardiogenic shock (PCCS).

    Methods: This single-center retrospective observational study enrolled 31 patients with PCCS undergoing an elective open-heart surgery followed by Impella support between November 2018 and February 2022 for further analysis.

    Results: The preoperative Euroscore II and left ventricular (LV) ejection fraction were 9.1 ± 10.4 and 35.7% ± 12.6%, respectively. The in-hospital mortality rate was 51.6% (n = 16). In survivors (n = 15), the mean Impella support time was 6.9 ± 3.5 days. Patients were discharged on the postoperative day 24.9 ± 16.4. Regarding LV remodeling, LV end-diastolic diameter was significantly decreased after Impella support (59.2 ± 6.0 mm vs. 54.4 ± 4.7 mm, p = 0.01, preoperative vs. postoperative). In-hospital mortality rates were comparable with small (CP, n = 6) or large (5.0, n = 25) Impella systems (33.3% [n = 2] vs. 56.0% [n = 14], p = 0.39). However, a lower in-hospital mortality rate was observed in the group with early initiation (i.e., intraoperative) of Impella support (n = 14) than that with delayed Impella initiation (i.e., in the postoperative course) (n = 11) (28.6% [n = 4] vs. 90.9% [n = 10], p = 0.004).

    Conclusions: Impella support contributes to LV remodeling in PCCS patients. In-hospital mortality was comparable in different Impella sizes and lower in early Impella initiation.

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  • Kazuhisa Tanaka, Hidemi Suzuki, Terunaga Inage, Takamasa Ito, Yuichi S ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00061
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: July 28, 2023
    JOURNAL OPEN ACCESS

    Purposes: Secondary spontaneous pneumothorax (SSP) is occasionally observed in elderly patients suffering from diffuse lung diseases. The purpose of this study was to analyze the outcomes of surgical treatment of SSP patients with chronic lung diseases.

    Methods: In total, 242 patients who underwent surgery for spontaneous pneumothorax at Chiba University Hospital from January 2006 to October 2016 were included in this study. The patients’ records were reviewed retrospectively for data on their background, surgical treatment, morbidity, mortality, and recurrence.

    Results: Of the spontaneous pneumothorax cohort, primary spontaneous pneumothorax (PSP) accounted for 144 patients. Among the 98 patients with SSP, 57 cases were caused by chronic obstructive pulmonary disease (COPD) and 21 were caused by interstitial pneumonia (IP). The postoperative complication rate was 19.3% in the COPD group, 42.9% in the IP group, and 11.1% in the PSP group. The recurrence rate was 5.3% in the COPD group, 28.6% in the IP group, and 21.5% in the PSP group.

    Conclusions: The morbidity and recurrence were comparable between PSP and SSP cases with COPD, whereas these values were unfavorable in SSP cases with IP compared with PSP ones. Surgical intervention should be carefully considered in SSP patients with IP.

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  • Ryo Nakamura, Kentaro Honda, Hideki Kunimoto, Takahiro Fujimoto, Kota ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00066
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: July 19, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: Saphenous vein grafts (SVGs) sometimes occur as vein graft stenosis or failure in coronary artery bypass grafting. The purpose of this study was to detect the factors affecting vein graft atherosclerosis.

    Methods: We performed two analysis. In the first analysis, we enrolled 120 grafts using conventionally harvested saphenous vein graft (C-SVG) and followed-up with multiple coronary computed tomography angiography (CCTA). We examined the factors that contribute to the graft atherosclerosis defined by graft failure at subsequent CCTA or substantial progression of graft stenosis (a decrease of ≥0.6 mm in diameter). In the second analysis, 66 grafts using no-touch harvested saphenous vein graft (N-SVG) were compared with those in the first analysis using C-SVG, focusing on the differences in intraoperative factors using propensity score-matched analysis.

    Results: In the first analysis, graft atherosclerosis+ group comprised 27 grafts, which had a larger SVG diameter, lower graft velocity, and higher graft/native ratio in diameter than the graft atherosclerosis– group. In the multivariable analysis, slow graft velocity and graft/native ≥2 in diameter were independently associated with the graft atherosclerosis. In the second analysis, the N-SVG group had a much greater graft velocity than the C-SVG group.

    Conclusion: Lower graft velocity and higher graft/native ratio in diameter were associated with the graft atherosclerosis. The N-SVG group had increased graft velocity, which may contribute to prevent the graft atherosclerosis.

    (Trial registration: UMIN Clinical Trial Registry no. UMIN000050482. Registered 3 March 2023, retrospectively registered.)

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  • Fuxiu Zhong, Haoruo Zhang, Yanchun Peng, Xueying Lin, Liangwan Chen, Y ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00029
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: July 15, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    Purpose: Intensive care unit-acquired weakness (ICUAW) affects patient prognosis after cardiopulmonary bypass (CPB) surgery, but its risk factors remain unclear. We investigated these risk factors and developed a nomogram for predicting ICUAW after CPB.

    Methods: Baseline characteristics, preoperative laboratory data, and intra- and postoperative variables of 473 patients after CPB were determined in this prospective cohort study. Lower limb muscles on bedside ultrasound images were compared 1 day before and 7 days after CPB. Risk factors were assessed using logistic regression models.

    Results: Approximately 50.95% of the patients developed ICUAW after CPB. The body mass index (BMI), New York Heart Association (NYHA) class, lactate, albumin, aortic clamping time, operation time, and acute physiological and chronic health evaluation II were determined as independent risk factors. The average absolute error of coincidence was 0.019; the area under the curve, sensitivity, and specificity were 0.811, 0.727, and 0.733, respectively, for the predictive nomogram.

    Conclusion: A high BMI, poor NYHA class, preoperative high serum lactate, low serum albumin, long surgical duration, aortic clamping, and high acute physiological and chronic health evaluation II score are risk factors for ICUAW after CPB. This robust and easy-to-use nomogram was developed for clinical decision-making.

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  • Nobunari Tomura, Satoshi Honda, Misa Takegami, Kensaku Nishihira, Suna ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00016
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: July 07, 2023
    JOURNAL OPEN ACCESS

    Purpose: Little is known about the outcomes of patients with ST-segment elevation myocardial infarction (STEMI) or non-ST-segment elevation myocardial infarction (NSTEMI) who undergo coronary artery bypass grafting (CABG) in the current percutaneous coronary intervention (PCI) era.

    Methods: We analyzed 25120 acute myocardial infarction (AMI) patients hospitalized between January 2011 and December 2016. In-hospital outcomes were compared between patients who underwent CABG during hospitalization and those who did not undergo CABG in the STEMI group (n = 19428) and NSTEMI group (n = 5692).

    Results: Overall, CABG was performed in 2.3% of patients, while 90.0% of registered patients underwent primary PCI. In both the STEMI and NSTEMI groups, patients who underwent CABG were more likely to have heart failure, cardiogenic shock, diabetes, left main trunk lesion, and multivessel disease than those who did not undergo CABG. In multivariable analysis, CABG was associated with lower all-cause mortality in both the STEMI group (adjusted odds ratio [OR] = 0.43, 95% confidence interval [CI] 0.26–0.72) and NSTEMI group (adjusted OR = 0.34, 95% CI 0.14–0.84).

    Conclusion: AMI patients undergoing CABG were more likely to have high-risk characteristics than those who did not undergo CABG. However, after adjusting for baseline differences, CABG was associated with lower in-hospital mortality in both the STEMI and NSTEMI groups.

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  • Masaharu Nakajima, Hiroki Mitsuoka, Yuki Orimoto, Shota Otsuka, Tomoyu ...
    2024 Volume 30 Issue 1 Article ID: oa.23-00069
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: July 01, 2023
    JOURNAL OPEN ACCESS

    Purpose: There have been few reports examining changes in physical activity (PA) after revascularization of lower extremities from the perspective of physical function at discharge. The purpose of this study was to clarify the effects of physical function before discharge on the amount of PA after discharge in patients who underwent revascularization.

    Methods: The subjects were 34 Fontaine class II patients admitted for elective surgical revascularization or endovascular treatment at two hospitals from September 2017 to October 2019. Triaxial accelerometers were used to measure changes in sedentary behavior (SB) before admission and 1 month after discharge. Multiple regression analysis was performed on the 6-min walking distance (6MWD) at the time of discharge and the change in SB 1 month after discharge; the cutoff value was calculated from the receiver operating characteristic (ROC) curve.

    Results: SB 1 month after discharge significantly decreased in the decreased SB group compared to the increased SB group (575.5 [400–745.2] vs. 649.5 [453.8–809.2], p <0.01). ROC curve was plotted with SB increase/decrease as the dependent variable and 6MWD at discharge as the independent variable; the cutoff value was 357.5 m.

    Conclusion: 6MWD measurement at discharge may help predict changes in SB after discharge.

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  • Jian-Feng Liu, Si-Jia Zhou, Xiu-Hua Chen, Hua Cao, Qiang Chen
    2024 Volume 30 Issue 1 Article ID: oa.23-00057
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: July 01, 2023
    JOURNAL OPEN ACCESS

    Purpose: To investigate the effect of optimizing regional cerebral oxygen saturation (rScO2) on the incidence of postoperative delirium and surgical outcome in infants with congenital heart disease.

    Methods: Sixty-one infants experienced desaturation in rScO2 of 10% from baseline for more than 30 seconds during surgery between January 2020 and January 2022. Among them, 32 cases (Group A) received the corresponding treatment in the process of desaturation and 29 cases (Group B) were observed without receiving any treatment. General information, cerebral oxygen saturation, the incidence of postoperative delirium, and other relevant clinical data were collected.

    Results: The duration and severity of intraoperative rScO2 desaturation in Group A were significantly lower than those in Group B. The incidence of postoperative delirium in Group A was significantly lower than that in Group B. There was no significant difference in the positive screening score for delirium between the two groups. Binary logistic regression analysis showed that the aortic cross-clamp time, mechanical ventilation duration, and severity of intraoperative rScO2 desaturation were significantly correlated with the occurrence of postoperative delirium.

    Conclusion: Aggressive rScO2 desaturation treatment is associated with a lower incidence of postoperative delirium and improved surgical outcomes.

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Case Report
  • Ryoichiro Doi, Hiromi Ichikawa, Keitaro Matsumoto, Koichi Tomoshige, R ...
    2024 Volume 30 Issue 1 Article ID: cr.23-00189
    Published: 2024
    Released on J-STAGE: March 09, 2024
    JOURNAL OPEN ACCESS
    Supplementary material

    Primary chest wall tumors are rare, their common clinical features are not well known, and surgical resection remains the main treatment. Apical chest wall tumors require large skin incisions and dissection of the chest wall muscles, making it difficult to maintain cosmetic appearance, respiratory function, and support of the upper extremity. There are few treatment options and no studies have reported on thoracotomy that spares muscles and preserves cosmetic superiority. However, in benign chest wall tumors in young patients, it is necessary to consider radicality, cosmetic superiority, and muscle sparing. We used a combined axillary incision and thoracoscopic approach to treat a massive myxoid neurofibroma at the apical chest wall in a 14-year-old female and were able to preserve the chest wall, upper limb function, and cosmetic aspects. This report provides a detailed description of the combined axillary incision and thoracoscopic approach for apical chest wall tumors.

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  • Kentoku Fujisawa, Masaki Ueno, Kazuya Okamoto, Hayato Shimoyama, Yu Oh ...
    2024 Volume 30 Issue 1 Article ID: cr.23-00202
    Published: 2024
    Released on J-STAGE: March 05, 2024
    JOURNAL OPEN ACCESS

    The incidence of gastric tube cancers has increased due to improved survival rates in patients after esophagectomy. However, the optimal surgical approach for gastric tube cancer remains controversial. Here, we report the case of a 70-year-old man with advanced gastric cancer arising from a retrosternally placed gastric conduit, 12 years after thoracic esophagectomy for esophageal cancer. Total resection of the gastric conduit was performed with robotic assistance. Although the working space was limited, secure resection was possible. Continuous en bloc mobilization was achieved with neck dissection, and reconstruction was performed via the same retrosternal route using the ileocolon. The patient was discharged on the 14th postoperative day without any adverse events. Robot-assisted surgery can overcome the technical limitations of laparoscopic mediastinal surgery and has advantages such as improved ergonomics, comfort, and elimination of hand tremors, and therefore may be an option for future minimally invasive surgeries.

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  • Hiroki Watanabe, Keita Nakanishi, Harushi Ueno, Taketo Kato, Yoshie Sh ...
    2024 Volume 30 Issue 1 Article ID: cr.23-00170
    Published: February 01, 2024
    Released on J-STAGE: February 01, 2024
    JOURNAL OPEN ACCESS

    We encountered a rare case of low-grade fibromyxoid sarcoma, which is generally known as Evans tumor, with massive calcification originating from the lung. The patient was a 22-year-old man with Duchenne muscular dystrophy who was referred for a detailed investigation of an intrathoracic tumor with massive calcification. Although our preoperative diagnosis was a solitary fibrous tumor originating from the mediastinum or diaphragm, intraoperative thoracoscopy revealed the tumor arising from the left lower lobe without adhesion to the other organs. Considering his medical history, we aimed to preserve lung function and chose wedge resection, which completely removed the tumor. Based on the pathological findings, the tumor was diagnosed as low-grade fibromyxoid sarcoma with massive calcification originating from the lung. Although extremely rare, this tumor should be considered as a differential diagnosis for a solitary lung mass with massive calcification in young adults.

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  • Michael Malyshev, Alexander Safuanov, Anton Malyshev, Andrey Rostovykh ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00236
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: March 25, 2023
    JOURNAL OPEN ACCESS

    A syphilitic aortitis is a late cardiovascular lesion of tertiary syphilis that has become exceptionally rare in the antibiotic era but not eradicated completely. Syphilitic aortitis of ascending aorta complicates in ascending aortic aneurysm formation and aortic valve regurgitation, both requiring surgical treatment. After surgery, lifelong surveillance of the remainder of the aorta is recommended because of a priori supposed high incidence of delayed involvement of noninvolved aortic segments. A 3-year follow-up result of surgery of syphilitic ascending aortic aneurysm with aortic valve regurgitation in condition of active ongoing syphilitic aortitis and valvulitis is described with addressing the dimensions of remaining aortic segments. This case demonstrates that the dilatation of the remainder of the aorta does not occur during 3 years, at least when anti-syphilitic course of antibiotic is used just after operation without additional treatment during the follow-up period. A few reports on surgical treatment of syphilitic aneurysms of the ascending aorta are discussed.

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  • Momoko Asami, Hitoshi Dejima, Yoshikane Yamauchi, Yuichi Saito, Koji S ...
    2024 Volume 30 Issue 1 Article ID: cr.23-00023
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: March 15, 2023
    JOURNAL OPEN ACCESS

    Systemic arterial blood supply to a normal lung is a rare anatomical abnormality. Surgery is usually indicated because this abnormality leads to pulmonary hypertension. Herein, we report our experience and ideas for safe vessel dissection. Case 1 was a woman in her 50s. We performed a left lower lobectomy following percutaneous coil embolization. The aberrant artery with emboli was confirmed intraoperatively by cone-beam computed tomography (CBCT) to safely dissect under thoracoscopic surgery (TS). Case 2 was a man in his 40s. Following percutaneous endovascular plug occlusion, we performed a left partial resection using indocyanine green fluorescence navigation. Intraoperatively, CBCT imaging demonstrated the aberrant artery and exact position of the emboli. This combination technique of interventional radiology and TS with CBCT imaging was considered safe and more secure for the treatment of anomalous systemic arterial blood supply to a normal lung.

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  • Wenzong Luo, Peng Hu, Liang Ma
    2024 Volume 30 Issue 1 Article ID: cr.22-00186
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: November 09, 2022
    JOURNAL OPEN ACCESS
    Supplementary material

    Quadricuspid aortic valve (QAV) is rare. Aortic valve replacement is the most frequent treatment for those patients with severe regurgitation or stenosis of the QAV. However, as our comprehension of the aortic valve grows, to repair a dysfunctional QAV becomes more and more feasible. We present a case of successful repair of the QAV using the surgical strategy of bicuspidization.

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  • Dario Amore, Dino Casazza, Umberto Caterino, Marco Rispoli, Emanuele M ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00134
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: October 29, 2022
    JOURNAL OPEN ACCESS

    We report successful surgical management of post-intubation tracheoesophageal fistula (TEF) in an adult patient requiring long-term mechanical ventilation. A complete tracheal transection without tracheal resection, via an anterior cervical approach, followed by direct closure of tracheal and esophageal defect, and interposition of muscle flap between the suture lines and tracheal reconstruction was performed. In selected cases, this surgical procedure may be a viable alternative to traditional techniques used to treat post-intubation TEF via the anterior or lateral cervical approach.

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  • Ryosuke Amemiya, Ikki Takada, Hiroya Kanzawa, Shotaro Ono, Yukio Moris ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00138
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: October 05, 2022
    JOURNAL OPEN ACCESS
    Supplementary material

    A 71-year-old man was diagnosed as having right primary lung squamous cell carcinoma, clinical stage IIIA, but he refused treatment. However, the right upper lobe nodule and lymph node (LN) #4R showed gradual shrinking without treatment. Four years after the diagnosis, a new nodule was detected in the left lung field. We considered that this new nodule might be metachronous primary lung cancer, and hence resected it for diagnosis and treatment. The tumor in the left lung was diagnosed as basaloid squamous cell carcinoma, and that in LN #4R was diagnosed as squamous cell carcinoma with keratinization. Therefore, the patient was diagnosed as having metachronous primary lung cancer that developed during the spontaneous regression of locally advanced lung cancer.

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  • Ayaka Asakawa, Hironori Ishibashi, Kuniyo Sueyoshi, Erika Mori, Yasuhi ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00084
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: August 25, 2022
    JOURNAL OPEN ACCESS

    A 41-year-old woman presented with productive cough and exertional dyspnea. Bronchoscopy revealed an endobronchial tumor arising from the membrane proximal to the bifurcation of right upper bronchus, and the tumor was a typical carcinoid. The right main bronchus, right upper lobe bronchus, and intermediate bronchus were resected along with the tumor. Intraoperative pathological diagnosis of the bronchial stumps was negative, and bronchial reconstruction was subsequently performed. Two-thirds of the circumference of the right main bronchus and the right intermediate bronchus were anastomosed. The right upper lobe bronchus was anastomosed in an end-to-side fashion. The anastomotic site was covered by the intercostal muscles.

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  • Satoru Tomita, Koichi Maeda, Kazuo Shimamura, Kizuku Yamashita, Ai Kaw ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00089
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: August 24, 2022
    JOURNAL OPEN ACCESS

    An 82-year-old man who underwent transcatheter aortic valve replacement (TAVR) using a 34-mm Evolut PRO (Medtronic, Minneapolis, MN, USA) for severe aortic stenosis 21 months previously presented with fever. Transesophageal echocardiography showed thickening of the valve leaflets of the transcatheter heart valve and movable structures such as verrucae on the upper edge of the Evolut PRO stent. Contrast-enhanced cardiac computed tomography showed a 72-mm saccular pseudoaneurysm on the dorsal aspect of the ascending aorta at the superior border of the Evolut PRO stent. Because of a suspected infected aortic aneurysm caused by prosthetic valve endocarditis (PVE), we performed aortic valve replacement using 23 mm Avalus (Medtronic, Minneapolis, MN, USA) and ascending aortic replacement using 26 mm Gelweave (Vascutek Terumo Inc, Scotland, UK). The postoperative course was uneventful. This report highlights that patients with PVE after TAVR may develop pseudoaneurysms of the ascending aorta.

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  • Masaru Matsuda, Koichi Maeda, Kazuo Shimamura, Kizuku Yamashita, Ai Ka ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00083
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: August 23, 2022
    JOURNAL OPEN ACCESS

    The INSPIRIS RESILIA valve is designed to dilate its valve annulus in transcatheter aortic valve-in-surgical aortic valve (TAV-in-SAV), a catheter therapy for biological valve deterioration. RESILIA tissue has improved anti-calcification properties. An 83-year-old man on hemodialysis undergoing surgical aortic valve replacement (SAVR) with a 25-mm INSPIRIS for severe aortic stenosis 22 months ago presented with general malaise. Transthoracic echocardiography revealed severe bioprosthetic stenosis (peak velocity: 3.5 m/s, mean pressure gradient: 32 mmHg, and effective orifice area: 0.45 cm2) and severely reduced left ventricular function (ejection fraction: 17%). Because redo-SAVR was extremely risky (society of thoracic surgeons [STS] risk score: 31%), the patient underwent transfemoral-TAV-in-SAV using a 26-mm SAPIEN 3️. Pre- and postoperative computed tomography showed that the internal diameter of the INSPIRIS had expanded from 22.2 mm to 24.2 mm. This case demonstrated the dilatable design of INSPIRIS but not the durability of RESILIA tissue.

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  • Satoshi Sakakibara, Koichi Maeda, Kazuo Shimamura, Kizuku Yamashita, A ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00038
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: June 23, 2022
    JOURNAL OPEN ACCESS

    A 94-year-old man who underwent transcatheter aortic valve (TAV) replacement 6 years ago was admitted because of exertional dyspnea. Transthoracic echocardiography revealed severe aortic regurgitation owing to TAV dysfunction. The patient was considered to have a high risk of occlusion of the sinus of Valsalva during TAV-in-TAV. Therefore, we performed TAV-in-TAV concomitant with coronary artery bypass grafting (CABG). The postoperative course was uneventful, and computed tomography 9 months later revealed patency of both the grafts. Concomitant CABG could be considered as one of the options in patients with a high risk of coronary occlusion during TAV-in-TAV.

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  • Tomohiro Nakajima, Yutaka Iba, Syuichi Naraoka, Tsuyoshi Shibata, Shin ...
    2024 Volume 30 Issue 1 Article ID: cr.22-00044
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: May 19, 2022
    JOURNAL OPEN ACCESS

    We present a case report of a 30-year-old Marfan syndrome patient who underwent a David procedure for severe aortic valve insufficiency and Valsalva aneurysm. Harvested aortic walls were examined by pathologists. Although the tunica media of the ascending aorta contained aligned elastic fibers, the aortic root media lacked aligned elastic fibers.

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New Methods
  • Taiki Ito, Satoru Wakasa, Koji Sato, Shinji Abe, Taro Minamida
    2024 Volume 30 Issue 1 Article ID: nm.23-00176
    Published: February 01, 2024
    Released on J-STAGE: February 01, 2024
    JOURNAL OPEN ACCESS
    Supplementary material

    Systolic anterior motion of the anterior mitral leaflet can persist after ventricular septal myectomy for obstructive hypertrophic cardiomyopathy, resulting in residual pressure gradients and mitral regurgitation. However, additional procedures for systolic anterior motion involving mitral valve leaflet suturing and resection may lead to future valve disease. Therefore, we adopted posterior papillary muscle suspension, a subvalvular procedure for functional mitral regurgitation, to treat systolic anterior motion without directly intervening in the mitral valve leaflets. Papillary muscle suspension toward the posterior mitral annulus moved the papillary muscles away from the interventricular septum and successfully eliminated the systolic anterior motion and midventricular pressure gradient. In terms of avoiding direct mitral interventions, this procedure is a viable option for systolic anterior motion, especially in cases of very mild mitral regurgitation.

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  • Goki Inno, Yosuke Takahashi, Kenta Nishiya, Munehide Nagao, Takumi Kaw ...
    2024 Volume 30 Issue 1 Article ID: nm.23-00153
    Published: January 26, 2024
    Released on J-STAGE: January 26, 2024
    Advance online publication: November 02, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    The Y-incision technique introduced by Dr. Bo Yang in 2021 is a very innovative technique that can enlarge the aortic annulus by two or more sizes without violating the left atrium or mitral valve. However, we encountered a case in which the left coronary artery ostium was located close to the left-non commissure. Therefore, we considered it would be dangerous to expand the incision to the left coronary annulus. We therefore devised a new technique that enlarges only the noncoronary annulus in an “L” fashion instead of a “Y” fashion. In performing this surgery, preoperative three-dimensional images were useful for understanding the anatomy when planning the aortic annular enlargement procedure. The L-incision technique can be a useful alternative method of aortic annulus enlargement.

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  • Yuji Katayama, Takahiro Miho, Eijiro Nogami, Kohei Hamada, Masahide Sh ...
    2024 Volume 30 Issue 1 Article ID: nm.23-00054
    Published: January 25, 2024
    Released on J-STAGE: January 25, 2024
    Advance online publication: July 07, 2023
    JOURNAL OPEN ACCESS
    Supplementary material

    The excellent long-term patency of no-touch (NT) saphenous vein grafts (SVGs) makes the grafts very attractive for coronary artery bypass grafting; however, NT-SVG harvesting has a greater incidence of wound complications than conventional methods. Since 2009, we have performed endoscopic vein harvesting (EVH) in our department with very few major wound complications. Because NT-SVG harvesting is expected to provide long-term patency, if performed with EVH, the incidence of wound complications will be reduced. Thus, we began performing endoscopic pedicle SVG harvesting (Pedicle-EVH) in March 2019. Herein, we report the early results obtained using our current Pedicle-EVH procedure. No major wound complications were reported, and the early results, including patency, were satisfactory. To harvest the pedicle SVG, however, we used a different method than the NT-SVG procedure, so careful monitoring will be needed to assess long-term outcomes.

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