Author + information
- Ivana Picone Borges Aragao1,
- Michele Pereira Nascimento1,
- Ricardo Trajano Sandoval Peixoto1,
- Rodrigo Trajano Sandoval Peixoto1,
- Ivan Lucas Picone Borges Anjos2,
- Livia Liberata Barbosa Bandeira2,
- Lahis Werneck Vilagra2,
- Alexandre Augustus Brito Aragao1,
- Vanessa Freitas Marcolla1 and
- Edison Carvalho Sandoval Peixoto1
Mitral balloon valvuloplasty is not always successful and free from complications.
To determine the independent risk factors for an unsuccessful procedure, severe mitral regurgitation and major complications in mitral balloon valvuloplasty.
Longitudinal prospective study of 518 mitral balloon valvuloplasties performed between July 6, 1987 and December 31, 2004, on 429 (82.8%) female patients and 89 (17.2%) male patients with a mean age of 37.5±12.8 years. Major complications were considered to be perforation with cardiac tamponade, stroke and severe mitral regurgitation per procedure. The continuous variables were transformed in categorical variables and the chi-square or Fisher exact tests to compare the categorical variables, and logistic regression and multiple logistic regression were used to identify independent factors for predicting success, incomplete procedure, severe mitral regurgitation and major complications.
Success was noted in 452 (94.2%) procedures, with major complications occurring in 22 (4.2%) patients, of which 10 were severe mitral regurgitation; there were no per-procedure deaths, with 4 (0.8%) in-hospital deaths. In the multiple logistic regression, lower age predicted success in the procedure; the only variable that predicted an incomplete procedure was the initial period of the procedure, and a score >11 points predicted severe per-procedure mitral regurgitation. There was no independent predictor of major complications in this study.
Success was related to younger patients, an incomplete procedure to the initial period of the procedure and severe per-procedure mitral regurgitation to an echocardiography score >11 points