Mitral valve repair by Double Teflon technique: cardiac remodeling analysis by tridimensional echocardiography

Abstract

Introduction: Mitral valve repair is the treatment of choice to correct mitral insufficiency. Although the literature related to left atrial and ventricular behavior after mitral repair without use of prosthetic rings is scarce.

Objective: To analyze cardiac morphology and function using real time tridimensional echocardiography in individuals submitted to mitral valve repair with Double Teflon technique.

Methods: Were included 14 patients with mixomatous mitral valve insufficiency that were submitted to mitral valve repair with the Double Teflon technique. Of them, 13 patients were in class III/IV. Patients were evaluated in preoperative period, immediate postoperative period, 6 months and 1 year after mitral repair. Statistic analysis was made by repeated measures ANOVA test and was considered statistically significant P <0.05.

Results: The analysis of systolic volumes, atrial and ventricular, demonstrated a significant volumetric reduction between immediate postoperative period and 1 year (P = 0.028 and P = 0.020, respectively). Between preoperative period and 1 year, there was a mean reduction in atrial and ventricle volumes of 19.9% and 15.4%, respectively. Atrial and ventricle diastolic volumes presented a significant reduction in immediate postoperative period (P <0.001 and P = 0.024, respectively), remaining stable during the study. There was an increase in left atrial ejection fraction after 6 months (P <0.001), although there was no significant variation in left ventricle ejection fraction.

Conclusions: Patients submitted to mitral valve repair by the Double Teflon technique demonstrated a left atrial and ventricle reverse remodeling. These reductions were associated with an improvement in left atrial function during the study.