Evolução da Onda P do Eletrocardiograma após Valvoplastia Mitral em Pacientes Portadores de Sobrecarga Atrial Esquerda Changes in P-Wave After Percutaneous Mitral Valvuloplasty in Patients with Mitral Stenosis and Left Atrial Enlargement

ETHODSWe studied 24 patients (75% female, mean age =37.1 ± 11.9 years) with moderate to severe mitral stenosis (MS), sinus rhythm (SR) and ECG signs of LAE who underwent successful PMV between 2002 and 2004. At least 6 months after the procedure (388.2 ± 192.9 days), the patients returned for clinical, ECG and echocardiographic follow-up. They were then divided in 2 groups: patients of group 1 (n = 8; 33.3%) still had ECG signs of LAE, and patients of group 2 (n = 16; 66.6%), had normal P wave. A multivariate analysis of clinical, ECG, echocardiographic and hemodynamic variables was performed.