Annals of Thoracic and Cardiovascular Surgery
Online ISSN : 2186-1005
Print ISSN : 1341-1098
ISSN-L : 1341-1098
Volume 29, Issue 4
Displaying 1-8 of 8 articles from this issue
Special Report
  • Aya Saito, Noboru Motomura, Hiraku Kumamaru, Hiroaki Miyata, Hirokuni ...
    2023 Volume 29 Issue 4 Pages 163-167
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: June 29, 2023

    Purpose: Continuous annual reporting on coronary artery bypass grafting (CABG) surgical practice is key for quality control and improvement of clinical results. In this report, Japanese nationwide features and trends in the extent of coronary artery disease and the characteristics of those undergoing CABG procedures in 2019 are presented. Clinical results of related ischemic heart disease are also presented.

    Methods and Results: The Japanese Cardiovascular Surgery Database (JCVSD) is a nationwide surgical case registry system. Data regarding CABG cases in the year 2019 (1 January–31 December) were captured with questionnaires regularly administered by the Japanese Association for Coronary Artery Surgery (JACAS). We analyzed trends in the number and types of grafts selected according to the number of diseased vessels in patients undergoing CABG. We also analyzed descriptive clinical results of those undergoing surgery for acute myocardial infarction or ischemic mitral regurgitation.

    Conclusions: This is the second publication summarizing the results following the JACAS annual report based on JCVSD Registry data from the year 2019. Clinical outcomes and surgical strategy trends were relatively stable. Further accumulation of information with a similar data collection system is expected.

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Review Articles
  • Masayuki Watanabe, Kengo Kuriyama, Masayoshi Terayama, Akihiko Okamura ...
    2023 Volume 29 Issue 4 Pages 168-176
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: May 23, 2023

    Robotic-assisted minimally invasive esophagectomy (RAMIE) has been rapidly spreading worldwide as a novel minimally invasive approach for esophageal cancer. This narrative review aimed to elucidate the current situation and future perspectives of RAMIE for esophageal cancer. References were searched using PubMed and Embase for studies published up to 8 April 2023. Search terms included “esophagectomy” or “esophageal cancer” and “robot” or “robotic” or “robotic-assisted.” There are several different uses for the robot in esophagectomy. Overall complications are equivalent or may be less in RAMIE than in open esophagectomy and conventional (thoracoscopic) minimally invasive esophagectomy. Several meta-analyses demonstrated the possibility of RAMIE in reducing pulmonary complications, although the equivalent incidence was observed in two randomized controlled trials. RAMIE may increase the number of dissected lymph nodes, especially in the left recurrent laryngeal nerve area. Long-term outcomes are comparable between the procedures, although further research is required. Further progress in robotic technology combined with artificial intelligence is expected.

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  • Jingyuan Li, Xiaoyu Qu, Xiu Jia, Yinghui Gong, Tienan Zhou, Xiaozeng W ...
    2023 Volume 29 Issue 4 Pages 177-184
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: February 16, 2023
    Supplementary material

    Purpose: We intended to study the effect of thoracic endovascular aortic repair (TEVAR) and optimal medical treatment (OMT) on type B intramural hematoma (BIMH).

    Methods: We searched PubMed, EMbase, Cochrane Library, and China National Knowledge Infrastructure databases that compared TEVAR and OMT in patients with BIMH. Two authors independently assessed the risk of bias using the Newcastle–Ottawa Scale. The rate ratio (RR) and 95% confidence interval were used to calculate the outcome. The primary endpoints were aortic-related death and regression/resolution. Secondary endpoints were all-cause death, progression to dissection, and secondary intervention.

    Results: Eight observational studies were included in the analysis. TEVAR reduced aortic-related death (RR 0.22, 95% CI 0.08–0.56, P = 0.002, I² = 24%) and promoted hematoma regression/resolution (RR 1.48, 95% CI 1.05–2.10, P <0.05, I² = 71%) compared to OMT. Moreover, TEVAR was associated with a reduction in progression to dissection (RR 0.32, 95% CI 0.13–0.81, P <0.02, I² = 39%) and secondary intervention (RR 0.18, 95% CI 0.09–0.37, P <0.00001, I² = 38%) compared to OMT. However, all-cause death has no significant difference between the two groups (RR 0.45, 95% CI 0.17–1.19, P = 0.11, I² = 58%).

    Conclusions: The results of this meta-analysis suggested that TEVAR is an effective treatment for BIMH, which can delay the progression of intramural hematoma and promotes regression/resolution. More research about indications of TEVAR is still needed.

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Original Articles
  • Hiroaki Komatsu, Nobuhiro Izumi, Takuma Tsukioka, Hidetoshi Inoue, Ryu ...
    2023 Volume 29 Issue 4 Pages 185-191
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: February 03, 2023

    Purpose: To evaluate the prognostic impact of restrictive ventilatory impairment in patients who undergo pulmonary resection of metachronous second primary lung cancer.

    Methods: The clinical characteristics and surgical outcomes of 70 patients with metachronous second primary lung cancer were analyzed.

    Results: The surgical procedures consisted of wedge resection in 40 patients, segmentectomy in 17, lobectomy in 12, and completion pneumonectomy in one. Patients who underwent ipsilateral pulmonary resection developed more perioperative complications (p = 0.0339). Three-year and 5-year overall survival rates were 78.2% and 69.2%, respectively. In univariate analysis, sex, restrictive ventilatory impairment, and histology of second primary lung cancer were significantly poor prognostic factors (all p <0.05). Multivariate analysis identified restrictive ventilatory impairment to be an independent predictor of a poor prognosis (p = 0.0193). In the 22 patients who died, the cause of death was lung cancer in 11 and other diseases, including pneumonia and respiratory failure, in 11. Death from another disease was significantly more common in patients with restrictive ventilatory impairment (p = 0.0216).

    Conclusion: Restrictive ventilatory impairment was an independent predictor of a poor prognosis in patients with a second primary lung cancer. Restrictive ventilatory impairment as a result of repeated thoracic surgery may increase the likelihood of death from another disease.

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  • Kemin Liu, Qing Ye, Yichen Zhao, Cheng Zhao, Li Song, Jiangang Wang
    2023 Volume 29 Issue 4 Pages 192-199
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: March 10, 2023
    Supplementary material

    Purpose: This study explored the sex differences in the outcomes of degenerative mitral valve repair (MVr).

    Methods: From 2010 to 2019, 1069 patients who underwent MVr due to degenerative mitral disease at Beijing Anzhen Hospital were analyzed. The average patient follow-up was 5.1 years (interquartile range: 5–7 years). The primary endpoint was overall survival. Secondary endpoints were freedom from reoperation and recurrent mitral regurgitation. A propensity-matched analysis was used to compare the outcomes of males and females.

    Results: Females were older, had a higher prevalence of atrial fibrillation and moderate-to-severe tricuspid regurgitation, and had smaller left atrial, left ventricular end-diastolic, and left ventricular end-systolic diameters. Males were more likely to undergo concomitant coronary artery bypass grafting and had longer cardiopulmonary bypass and aortic cross-clamp times. The in-hospital mortality was <1% (10/1,069). After propensity score matching of 331 pairs of patients, most variables were well balanced. Before and after propensity score matching, the long-term survival and freedom from reoperation rates were similar. Males had higher durability after surgery compared with females.

    Conclusions: Females were referred to surgery later and had more complications than males. Long-term survival and freedom from reoperation rates were not significantly different between the sexes.

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Case Reports
  • Toshiaki Fukutomi, Yusuke Taniyama, Chiaki Sato, Hiroshi Okamoto, Hiro ...
    2023 Volume 29 Issue 4 Pages 200-205
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: January 25, 2022

    Purpose: With de novo cancer, esophagectomy after lung transplantation (LTx) can be challenging because of intrathoracic adhesions, delayed wound healing, and postoperative pulmonary complications, which might be lethal.

    Case Presentation: A 52-year-old woman with esophageal cancer had undergone bilateral LTx for end-stage diffuse panbronchiolitis at 50 years of age. Thoracoscopic esophagectomy was performed. Bilateral bronchial arteries and subcarinal and bilateral bronchial lymph nodes were preserved to maintain blood supply to the transplanted bronchi. No ischemic changes were observed in either bronchi. The patient’s postoperative course was uneventful. Although she underwent chemoradiation therapy for recurrence at the left cervical paraesophageal lymph node, she remains alive with good disease control and well-maintained respiratory function.

    Conclusion: Minimally invasive surgery with careful attention to blood supply to the transplanted bronchi was useful for treating esophageal cancer after LTx.

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  • Ryumon Matsumoto, Toshiki Fujiyoshi, Kentaro Kamiya, Jun Matsubayashi, ...
    2023 Volume 29 Issue 4 Pages 206-209
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: January 29, 2022

    A patient underwent surgical resection twice for primary and metastatic dedifferentiated liposarcomas. Computed tomography revealed a tumor mass at the cavoatrial junction. Prompt surgical resection of the tumor with thrombectomy was successfully performed using cardiopulmonary bypass with hypothermic circulatory arrest. Despite the poor prognosis of metastatic or recurrent liposarcoma, the patient has survived for 8 years since the first tumor resection.

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  • Riki Sumiyoshi, Hideki Morita, Sho Kusadokoro, Kento Fujii, Hiroyuki K ...
    2023 Volume 29 Issue 4 Pages 210-213
    Published: 2023
    Released on J-STAGE: August 20, 2023
    Advance online publication: March 10, 2022

    Werner’s syndrome (WS) is a genetic disorder presenting with premature senility. In the present study, we performed minimally invasive cardiac surgery (MICS)-aortic valve replacement (AVR) on a patient with Werner’s syndrome who presented with aortic stenosis. The patient, a 49-year-old Japanese man, was brought to the emergency room with dyspnea during exercise. On echocardiography, severe aortic stenosis was found and surgery was planned. He had poorly controlled diabetes mellitus and underwent MICS-AVR to avoid the risk of sternal osteomyelitis, which resulted in a good outcome. The aortic valve had sclerotic changes and a genetic disease was suspected based on the onset of aortic stenosis at a young age, characteristic appearance, and various signs of aging. Genetic testing led to the diagnosis of WS.

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