Annals of Thoracic and Cardiovascular Surgery
Online ISSN : 2186-1005
Print ISSN : 1341-1098
ISSN-L : 1341-1098
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Showing 1-8 articles out of 8 articles from the selected issue
Review Article
  • Guoshu Bi, Guangyu Yao, Yunyi Bian, Liang Xue, Yi Zhang, Tao Lu, Hong ...
    2020 Volume 26 Issue 1 Pages 1-12
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: October 05, 2019
    JOURNALS OPEN ACCESS

    Purpose: To quantitatively evaluate the effect of preexisting diabetes mellitus (DM) on the outcomes of patients with non-small-cell lung cancer (NSCLC).

    Materials and Methods: Observational studies comparing the prognosis of NSCLC patients with and without diabetes were identified from PubMed, EMBASE, and The Cochrane Central Register of Controlled Trials (CENTRAL). We searched for studies that published in English from inception to March 30, 2019, using search terms related to diabetes and NSCLC. Pooled hazard ratio (HR) and 95% confidence interval (CI) were calculated by a random-effect model and subgroup analyses were performed.

    Results: In all, 17 of 1475 identified studies were finally included in the meta-analysis. The result revealed that preexisting diabetes had a significantly negative impact on the overall survival (OS) of patients with NSCLC (HR: 1.31, 95% CI: 1.12–1.54), especially in patients undergoing surgical treatment (HR: 1.46, 95% CI: 1.02–2.09) in comparison with those receiving only non-surgical treatment (HR: 1.33, 95% CI: 0.87–2.03). In addition, preexisting diabetes was more likely to be associated with a worse prognosis among Asian NSCLC patients than Western patients. Sensitivity analysis indicated that the main result was robust, and no evidence of publication bias was found.

    Conclusion: Preexisting DM has a negative impact on diabetic NSCLC patients’ prognosis.

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Original Articles
  • Robert Tonks, Gurion Lantz, Jeremy Mahlow, Jeffrey Hirsh, Lawrence S. ...
    2020 Volume 26 Issue 1 Pages 13-21
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: September 06, 2019
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    Purpose: The Convergent procedure is a hybrid, multidisciplinary treatment for symptomatic atrial fibrillation (AF) consisting of minimally invasive surgical epicardial ablation and percutaneous/catheter endocardial ablation. We investigated outcomes following introduction of the Convergent procedure at our institution.

    Methods: Retrospective study examining single-center outcomes. Demographic, procedural, and post-procedural variables were collected with follow-up data obtained at 3, 6, and 12 months.

    Results: In all, 36 patients with paroxysmal (11%) or persistent/long-standing persistent (89%) AF underwent the Convergent procedure. 36% also underwent concomitant left atrial appendage (LAA) exclusion by thoracoscopic placement of an epicardial clip. Mean age 60.6 ± 8.0 years with mean arrhythmia burden of 3.9 ± 2.7 years. All patients had failed prior attempts at medical management, 81% had failed prior cardioversion, and 17% had failed prior catheter ablation. Convergent was performed successfully in all patients with no peri-procedural deaths or major complications. At 3 and 12 months, 77.8% and 77.3% of patients, respectively, were free from symptomatic arrhythmia. 65.8% were off anti-arrhythmic medication at 12 months.

    Conclusions: The Convergent procedure is safe and has good short- and intermediate-term clinical success rates. This unique hybrid approach combines strengths of surgical and catheter ablation and should be part of any comprehensive AF treatment program.

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  • Bing Tang, Yunhu Song, Sainan Cheng, Hao Cui, Keshan Ji, Shihua Zhao, ...
    2020 Volume 26 Issue 1 Pages 22-29
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: October 04, 2019
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    Supplementary material

    Objectives: This study aims to investigate the risk factors of in-hospital postoperative atrial fibrillation (POAF) and the impact of POAF on the clinical outcome in hypertrophic cardiomyopathy (HCM) patients who underwent myectomy.

    Methods: Data from a total of 494 obstructive HCM patients, who had undergone preoperative cardiac magnetic resonance (CMR) testing and who underwent myectomy at Fuwai Hospital from June 2011 to June 2016, were collected.

    Results: Multivariate logistic regression analysis showed that old age (odds ratio [OR], 4.326; 95% confidence interval [CI], 2.248–8.325; p <0.001), maximal left atrium volume (LAV) (OR, 1.137; 95% CI, 1.075–1.202; p <0.001), and hypertension (OR, 2.754; 95% CI, 1.262–6.007; p = 0.011) were associated with the incidence of POAF. In the patients without preoperative AF, Cox regression analysis demonstrated that POAF (p = 0.002), decreased left atrium (LA) ejection fraction (LAEF) (p = 0.036), concomitant procedure (p = 0.039), and postoperative residual moderate or severe mitral valve regurgitation (p = 0.030) were independent predictors of composite cardiovascular events.

    Conclusions: POAF indicated a poorer clinical outcome after myectomy for obstructive HCM patients, which was similar to those with preoperative AF. Elevated LAV was independently related to POAF onset in HCM patients who underwent myectomy.

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  • Doha Obed, Felix Fleissner, Andreas Martens, Serghei Cebotari, Axel Ha ...
    2020 Volume 26 Issue 1 Pages 30-39
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: January 18, 2020
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    Aims: Compelling evidence encourages the use of the radial artery (RA) as the second arterial graft in coronary artery bypass grafting (CABG). However, its long-term benefits remain disputed. We sought to evaluate long-term outcome and survival by comparing patients receiving RAs with those receiving venous grafts to a single internal thoracic artery (ITA).

    Methods: We analyzed 345 patients undergoing primary multivessel CABG and conducted a 13-year long follow-up. In all, 187 patients received the RA and the left ITA as T-graft; 158 patients received saphenous veins complementing a single ITA. We performed propensity-score matching on 81 pairs to balance treatment selection and confounders.

    Results: Patients receiving RAs were younger and less likely to be female or to have pulmonary hypertension, impaired renal function, or left main coronary disease.

    At 30 days, they showed significantly lower unadjusted mortality and renal impairment. Unadjusted long-term survival was superior in the RA group, even after propensity-score matching. We found that RA use protected from late mortality.

    Conclusions: Using the RA and the left ITA as T-graft is associated with a significant long-term survival benefit in patients undergoing CABG. It may display a promising alternative to conventional use of a single ITA supplemented by saphenous veins.

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  • Hidehito Kuroki, Hirokuni Arai, Smith Srisont, Keiji Oi, Makoto Tomita ...
    2020 Volume 26 Issue 1 Pages 40-46
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: December 11, 2019
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    Purpose: To stabilize the sternum after median sternotomy, unsintered hydroxyapatite poly-L-lactide (u-HA/PLLA) sternal pins are frequently used in Japan. However, sternal pins are ineffective in the fragile bone marrow. Thus, a corrugated sheet made of u-HA/PLLA was developed as a new sternal fixation device.

    Methods: To examine the effects of the device, we measured the shear force using a sternal model and cadaver. The shear force of the corrugated sheet, sternal pin, and simple wire was compared. The device size was determined after reviewing the sternal computed tomography (CT) of 128 patients.

    Results: The shear force of the model with the corrugated sheet (286 [256–295] N) was higher than that with sternal pins (135 [134–139] N, p = 0.03) and simple wire (94 [90–104] N, p = 0.03) at 2-mm displacement. In the cadaver test, the shear force of the sternal halves with the device was about two times higher than that without the device. Retrospective CT showed that 18-mm wide device applies to 99% male and 87% female patients at the fourth intercostal level.

    Conclusion: The corrugated sheet might provide a stronger fixation effect in the fragile bone marrow. The device width was modified to 18 mm to be applicable for most Japanese patients.

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Case Reports
  • Hazem El Beyrouti, Angela Kornberger, Nancy Halloum, Andres Beiras-Fer ...
    2020 Volume 26 Issue 1 Pages 47-50
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: May 21, 2018
    JOURNALS OPEN ACCESS

    Background: Coronary involvement in aortic dissection heralds a poor outcome. Involvement of the left main stem may lead to left ventricular (LV) failure requiring mechanical circulatory support.

    Case Report: A staged approach was applied in a 24-year-old female who suffered extensive infarction due to aortic dissection with left main stem involvement. After replacement of the ascending aorta and grafting of the left internal thoracic artery to the left anterior descending artery following a failed attempt at reconstruction of the left coronary ostium, she failed to wean from cardiopulmonary bypass (CPB) and underwent implantation of an extracorporeal life support (ECLS) system as a bridge to decision. Subsequent implantation of a left ventricular assist device (LVAD) as a bridge to recovery/transplantation was followed by an uneventful further course.

    Conclusions: Our experience suggests that early implantation of a ventricular assist device (VAD) as bridge to recovery/transplantation is an alternative to prolonged ECLS in patients who suffered extensive myocardial infarction in the course of aortic dissection.

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  • Yohsuke Yanase, Akihito Ohkawa, Satomi Inoue, Yukihiro Niida
    2020 Volume 26 Issue 1 Pages 51-54
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: March 17, 2018
    JOURNALS OPEN ACCESS

    In case of complete circumferential dissection of the ascending aorta, the dissected flap has the potential to fold backwards, causing several complications. We report two cases of Stanford type A acute aortic dissection (AAD) whose intimal flaps intussuscepted into the left ventricular outflow tract.

    Case 1: A 41-year-old man with AAD in whom transthoracic echocardiography (TTE) showed the dissected flap as folded back into the left ventricular outflow tract, causing severe aortic regurgitation (AR) with rapidly progressing acute pulmonary edema. Despite performing salvage surgery, the patient could not be rescued.

    Case 2: An 81-year-old man with annuloaortic ectasia developed Stanford type A AAD. TTE showed an extremely mobile intimal flap intussuscepting into the left ventricular outflow tract. However, AR was not severe as it was prevented by the flap itself. The patient was rescued by performance of the modified Bentall procedure.

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New Method
  • Tetsuro Uchida, Azumi Hamasaki, Yoshinori Kuroda, Atsushi Yamashita, M ...
    2020 Volume 26 Issue 1 Pages 55-59
    Published: 2020
    Released: February 20, 2020
    [Advance publication] Released: September 26, 2019
    JOURNALS OPEN ACCESS

    Reoperations on the proximal thoracic aorta are increasingly observed after previous aortic or cardiac operations. Redo proximal aortic surgery remains challenging with an increased mortality compared to first-time operations. For a successful redo proximal aortic surgery in a patient with complex pathological conditions, the surgical procedure and cardiopulmonary bypass (CPB) should be simplified as much as possible. Herein, we report our experience of proximal aortic reoperations in which the strategy consisted of an axillo-axillary (jugular) and a femoro-femoral CPB in combination with minimal dissection of surgical adhesions. Satisfactory full-flow CPB was achieved with peripheral cannulations and the aid of vacuum-assisted venous drainage. A suitable surgical view of the proximal aorta was obtained without dissection of the heart. There was no operative mortality and the peripheral CPB was well managed without technical problems. We consider that the proposed strategy makes proximal aortic reoperations safe and simple.

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