Mitral valve reconstruction in Barlow disease: long-term echographic results and implications for surgical management.
ABSTRACT Owing to the complexity of the underlying lesions, Barlow disease remains a challenge for surgeons performing mitral valve repair. We aimed to assess whether our most recent results involving several surgeons were comparable with those of a previous experience in which mitral valve repair was performed by a more limited group of surgeons.
From September 2000 to January 2007, 200 patients with Barlow disease (135 men and 65 women; mean age, 56 ± 13 years) were referred to our institution for surgical treatment of their mitral regurgitation. We retrospectively analysed the mitral lesions characteristics, the surgical techniques used, and clinical outcomes. Follow-up echocardiograms were biannually reviewed.
Lesions comprised annular dilatation, excess tissue, and leaflet prolapse in all cases. The most frequent prolapsed segments were P2 (88.5%; n = 177) and A2 (55.5%; n = 111). Annular calcifications and restrictive valvular motion were associated in 20% (n = 40). Repair was feasible in 94.7% (n = 179/189) of non-redo interventions. Immediate postoperative echocardiography showed residual mitral regurgitation greater than 1+ in 6 cases; these patients were all reoperated on within the next months. Operative mortality was 1.5% (n = 3). Mean follow-up was 77.5 ± 25.6 months. At 8 years postoperatively, overall survival was 88.6% ± 3.1%, freedom from reintervention was 95.3% ± 1.7%, and freedom from late recurrent moderate mitral regurgitation (>2+) was 90.2% ± 3.1%
Provided that the fundamental principles of mitral valve reconstruction are respected, the surgical techniques are highly reproducible with good long-term results, similar to those published during the pioneering phase of this surgery.
Article: Very long-term results (up to 17 years) with the double-orifice mitral valve repair combined with ring annuloplasty for degenerative mitral regurgitation.[show abstract] [hide abstract]
ABSTRACT: The very long-term results of the double-orifice mitral valve repair are unknown. The aim of this study was to assess the late clinical and echocardiographic outcomes of this technique in patients with degenerative mitral regurgitation. From 1993 to 2000, 174 patients with severe degenerative mitral regurgitation were treated with the double-orifice technique combined with ring annuloplasty. Mean age of patients was 52 ± 12.8 years, New York Heart Association class I or II was present in 71% of the patients, atrial fibrillation in 17.2%, and preoperative left ventricular ejection fraction was 59.5% ± 7.5%. Mitral regurgitation was due to anterior leaflet prolapse in 36 patients (20.6%), bileaflet prolapse in 128 (73.5%), and posterior leaflet prolapse in 10 patients (5.7%). There were no hospital deaths. At hospital discharge, mitral regurgitation was absent or mild in 169 patients (97.1%) and moderate (2+/4+) in 5 patients (2.8%). Mitral stenosis requiring reoperation was detected in 1 patient (0.6%). Clinical and echocardiographic follow-up was 97.1% complete (mean length, 11.5 ± 2.53 years; median, 11.6 years; longest duration, 17.6 years). At 14 years, actuarial survival was 86.9% ± 3.37%, freedom from cardiac death was 95.8% ± 1.54%, and freedom from reoperation was 89.6 ± 2.51%. At the last echocardiographic examination, recurrence of mitral regurgitation ≥3+ was documented in 23 patients (23/169, 13.6%). Freedom from mitral regurgitation ≥3+ at 14 years was 83.8% ± 3.39%. The only predictor of recurrence of mitral regurgitation ≥3+ was residual mitral regurgitation greater than mild at hospital discharge (hazard ratio, 5.7; 95% confidence interval, 1.6-20.6; P = .007). The double-orifice repair combined with ring annuloplasty provides very satisfactory long-term results in patients with degenerative mitral regurgitation in the setting of bileaflet and anterior leaflet prolapse.The Journal of thoracic and cardiovascular surgery 08/2012; 144(5):1019-26. · 3.41 Impact Factor