Operative Results of Mitral Valve Repair and Replacement in Chronic Ischaemic Mitral Valve Regurgitation
Autor: | Peter Grant, Scott Jennings, Beatrix Weiss, Zakir Akhunji, Levi Bassin, Michael Cheung, Damian Gimpel, Hugh Wolfenden |
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Rok vydání: | 2020 |
Předmět: |
Male
Pulmonary and Respiratory Medicine medicine.medical_specialty Mitral Valve Annuloplasty medicine.medical_treatment Myocardial Ischemia 030204 cardiovascular system & hematology 03 medical and health sciences Coronary artery bypass surgery 0302 clinical medicine Mitral valve Humans Medicine 030212 general & internal medicine Aged Retrospective Studies Mitral regurgitation Mitral valve repair business.industry Mitral valve replacement Mitral Valve Insufficiency medicine.disease Surgery Treatment Outcome medicine.anatomical_structure Echocardiography Cardiothoracic surgery Cohort Quality of Life Mitral Valve Female Cardiology and Cardiovascular Medicine business Mitral valve regurgitation Follow-Up Studies |
Zdroj: | Heart, Lung and Circulation. 29:1713-1724 |
ISSN: | 1443-9506 |
DOI: | 10.1016/j.hlc.2020.03.007 |
Popis: | Background Ischaemic mitral regurgitation (IMR) carries significant morbidity and mortality. Surgical management includes coronary artery bypass surgery alone or concomitant with mitral valve repair or replacement. There is ongoing debate regarding the appropriate approach to the mitral valve in relation to long-term outcomes. This review examines our early and late follow-up, with operative and echocardiographic outcomes for mitral valve repair and mitral replacement for chronic IMR. Methods A retrospective review was performed on prospectively collected data of 119 consecutive patients who either underwent mitral repair (n=101) or mitral replacement (n=18) for chronic IMR at Prince Henry and The Prince of Wales hospitals in Sydney between 1999–2016. All patients had pre and postoperative transthoracic echocardiograms. Follow-up echocardiographic data was obtained from the most recent clinical appointment. Follow-up mortality outcomes were obtained with ethics approval from the Australian National Death Index (NDI). Results There was no statistical difference between cardiopulmonary bypass (CPB) time, cross-clamp time, time spent in intensive care unit (ICU) and time to discharge between cohorts. The replacement cohort was noted to have higher preoperative pulmonary artery (PA) pressures and a higher severity of IMR. Seven (7) deaths were in the mitral valve (MV) repair group within 30 days (6.9%) and three deaths in the MV replacement group within 30 days (16.7%). Echocardiographic follow-up was complete in 78% of the MV repair cohort at an average of 4.06±2.66 years, and 73% complete in the MV replacement cohort at an average of 6.09±4.3 years. Three (3) patients had prior MV repair before MV replacement early at days zero and 17, and late at 8 years respectively. Follow-up echocardiography showed mitral regurgitation (MR) in the mitral valve repair cohort as ≤ mild in 83.5% and ≤ trivial in 35.6%. In the MV replacement cohort MR ≤ mild in 100% and ≤ trivial in 82% with no moderate or severe MR. Preoperative tricuspid regurgitation (TR) and a flexible annuloplasty were predictive of an MR grade > mild in the repair cohort at discharge. Five-year (5-year) survival for the repair cohort was 85% with a mean follow-up time of 7.1±3.83 years. For the replacement cohort, five-year survival was 77.8% with a mean follow-up time of 5.35±1.54 years. Conclusions Mitral valve repair and replacement for chronic IMR has acceptable mortality, reintervention rates and excellent postoperative echocardiographic degrees of IMR in this cohort. Further evaluation is required into quality of life post intervention for IMR and of preoperative predictive factors of significant MR postoperatively to help guide the appropriate choice of treatment. The presence of preoperative tricuspid regurgitation of moderate grade or higher, and the use of a flexible annuloplasty may indicate patients more likely to have a higher grade of MR at follow-up following mitral valve repair in patients with IMR. |
Databáze: | OpenAIRE |
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