International Society For Minimally Invasive Cardiothoracic Surgery

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Comparative Early And Long Term Results Of Mitral Valve Surgery Between Right Mini Thoracotomy And Full Sternotomy Approach
suchart chaiyaroj, Chawannuch Ruaengsri, Omchai Rattananont, Varissara Javakijkarnjanakul, Panuwat Lertsitthichai.
Mahidol university, Bangkok, Thailand.

Background: To report early and late clinical results comparing right mini thoracotomy (RMT) versus full sternotomy (FS) mitral valve surgery (MVS) Methods: 574 consecutive patients underwent MVS were prospectively non randomized reviewed during January 2002 to October 2018. There were 241 in FS group and 241 in RMT group by propensity matching. Baseline characteristics were compared. Early and late clinical outcomes of 30 days mortality, reoperation for bleeding, stroke, prolonged ventilation, renal failure, permanent pacemaker, and echocardiographic hemodynamic performance were assessed and compared between two groups. Results: Similar results were found between RMT and FS MVS groups including age 58.8 13.6, 57.2 14.2, p = 0.2, new AF 5 (2%), 4 (1.7%), p = 1.0), and re operation for bleeding 2 (0.8%), 1 (0.3%), p = 0.9. There were more degenerative valve pathology (79%, 45.6%, p < 0.001), less aortic cross clamp time (10737.3, 115.4 36.4, p = 0.017), less cardiopulmonary bypass time (157.651.2, 171.3 53.4, p = 0.005), less bleeding and blood transfusion requirement in the RMT group. Early clinical results of 30 days mortality, stroke, renal failure, new pacemaker, and hemodynamic performance at one month, three to six month, and one year were comparable in both groups. Mean follow up (year) was 5.2 + 2.5 (RMT) and 10.2 + 4.0 (FS). Survival probability and freedom from MACCE at ten years in RMT and FS group were 94.05%, 95.44% and 99.5%, 90.46%, p < 0.001, respectively. Conclusions: RMT approach for MVS is associated with cosmetic satisfaction, less bleeding, blood transfusion requirement, similar effective hemodynamic performance and comparable early and late clinical results to FS approach.

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