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Revista argentina de cardiología
On-line version ISSN 1850-3748
Abstract
NAVIA, DANIEL et al. Long-term Durability of Mitral Valve Repair Surgery for Degenerative Regurgitation. Rev. argent. cardiol. [online]. 2021, vol.89, n.6, pp.531-538. Epub Dec 01, 2021. ISSN 1850-3748. http://dx.doi.org/10.7775/rac.es.v89.i6.20463.
Objective:
The aim of this study was to evaluate long-term results of degenerative mitral valve regurgitation (MR) repair.
Methods:
Between January 2008 and December 2019, 457 patients (mean age 64.9±12.2 years; 61.1% men) with severe MR underwent MV repair surgery. Median follow-up was 3.0 years (IQR 4.1 years) and was completed in 98.7% of patients. Periodic echocardiographic studies were performed, and long-term survival, the recurrence rate of moderate-severe MR and the need for reintervention were analyzed.
Results:
At 10-year follow-up, long-term survival was high without significant differences according to the affected leaflet: between posterior leaflet 95±2.1%, and anterior leaflet 94±2.2% (p=0.54). Patients with preoperative functional class III/IV (n=142) presented higher mortality at follow-up: 13.9±4.1% vs. 2.7%±1.2% (p=0.001). The risk of recurrence for moderatesevere MR at the end of follow-up for the total group of patients was 14.6±4.3% and freedom from recurrence according to the affected leaflet was high without significant difference: posterior leaflet 90±3.4% and anterior leaflet 80 ± 8.5 (p=0.97). Finally, the need for reoperation in post-repair follow-up was 4.7±3.3%
Conclusions:
Long-term survival after MV repair is high and the need for reoperation is infrequent. There is a progressive increase in MR recurrence at the long-term follow-up.
Keywords : Heart Valve Prosthesis Implantation; Mitral Valve Insufficiency; Mitral Valve/Surgery; Treatment Outcome.