[Long term results of mitral balloon valvuloplasty].

Abstract:

BACKGROUND:Mitral balloon valvuloplasty (MBV) is the therapy of choice for the treatment of symptomatic mitral stenosis with suitable anatomy. Although its short and mid-term results are favorable, there is a paucity of information about long-term follow-up. AIM:To assess the late results of MBV. MATERIAL AND METHODS:A cohort of 225 patients aged 8 to 20 years who were subjected to a MBV from 1989 to 2001, was studied. All variables at the time of the procedure, short and long-term results and major events during follow-up (new mitral intervention and mortality) were recorded. Uni and multivariate analysis were used to assess prognosis. RESULTS:The mean follow-up lapse was 13.5 years (range 8 to 20 years). During this period, 88 patients (39.1%) remained event-free and in acceptable functional capacity. Eight percent died, 8% required a second MBV and 43.5% required a surgical mitral valve replacement. A post-procedural area equal or greater to 1.9 cm² was associated with a greater likelihood of free-event survival (log rank test: p = 0.02/Cox proportional regression model: coefficient 0.54, p = 0.04). CONCLUSIONS:MBV is effective, although there is a high chance of new interventions in the long-term follow-up. A larger post-procedure mitral area is associated with a better prognosis.

journal_name

Rev Med Chil

journal_title

Revista medica de Chile

authors

Martínez R G,Fajuri N A,Córdova A S,Braun J S,Marchant D E,Guarda S E,Veas P N,Méndez L M,Lindefjeld C D,Pérez P O,Flores A,Valenzuela E,Martínez S A

doi

10.4067/S0034-98872014001100001

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

1363-70

issue

11

eissn

0034-9887

issn

0717-6163

pii

S0034-98872014001100001

journal_volume

142

pub_type

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