Dobutamine stress echocardiography for assessing the role of dynamic intraventricular obstruction in left ventricular ballooning syndrome.

ABSTRACT:

Background

Dynamic intraventricular obstruction has been observed in patients with left ventricular ballooning syndrome (LVBS) and has been hypothesized as a possible mechanism of the syndrome. The aim of this study was to assess the prevalence and significance of dynamic intraventricular obstruction in patients with LVBS.

Methods and results

Dobutamine stress echocardiography was carried out in 22 patients with LVBS (82% apical), all women, aged 68 +/- 9 years. At baseline 1 patient had a > 30 mmHg LV gradient; during stress a LV gradient > 30 mm Hg developed in 6/21 patients (28%) and was caused by systolic anterior motion of the mitral valve in the 3 patients with severe gradient (mean 116 +/- 29 mmHg), who developed mitral regurgitation and impaired apical wall motion an

SUBMITTER: Previtali M 

PROVIDER: S-EPMC2873238 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature