Title: Abstract 14833: Ventricular Interdependence by Means of Preload Tress Echocardiography in Patients With Pulmonary Hypertension
Abstract:Background: Pulmonary hypertension (PH) is characterized by a marked and sustained elevation of pulmonary vascular resistance, leading to an increase in pulmonary artery pressure, and right ventricula...Background: Pulmonary hypertension (PH) is characterized by a marked and sustained elevation of pulmonary vascular resistance, leading to an increase in pulmonary artery pressure, and right ventricular (RV) failure. RV pressure overload in PH patients can affect left ventricular (LV) performance as a result of ventricular interdependence, however, association of functional reserve with ventricular interdependence remains uncertain. Thus, the aim of this study was to investigate the effect of preload stress echocardiography on ventricular interdependence in PH patients by means of leg-positive pressure (LPP) maneuver. Methods: We studied 43 PH patients with pulmonary arterial hypertension, and chronic thromboembolic pulmonary hypertension. All patients underwent echocardiography at rest and during LPP maneuver. RV function was calculated by averaging peak speckle-tracking longitudinal strain from RV free-wall (RV free-wall strain). RV contractile reserve was assessed as a relative change in RV free-wall st...Read More
Publication Year: 2017
Publication Date: 2017-11-14
Language: en
Type: article
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