Effect of Biventricular Pacing on Diastolic Dyssynchrony
نویسندگان
چکیده
منابع مشابه
Echocardiographic parameters of ventricular dyssynchrony validation in patients with heart failure using sequential biventricular pacing.
OBJECTIVES We sought to evaluate the relationship between hemodynamic and ventricular dyssynchrony parameters in patients undergoing simultaneous and sequential biventricular pacing (BVP). BACKGROUND Various echocardiographic parameters of ventricular dyssynchrony have been proposed to screen and optimize BVP therapy. METHODS Forty-one patients with heart failure undergoing BVP implantation...
متن کاملHemodynamic effect of atrioventricular and interventricular dyssynchrony in patients with biventricular pacing: Implications for the pacemaker syndrome
BACKGROUND/OBJECTIVES Pacemaker syndrome was mainly described as the sequel of atrioventricular (AV) dyssynchrony. The role of interventricular (VV) dyssynchrony has not been studied yet. The aims of this study were to noninvasively assess the hemodynamic effects of different ventricular pacing sites with and without AV and VV dyssynchrony and to observe the patients for clinical symptoms of th...
متن کاملFrontiers in congestive heart failure: Ventricular contraction abnormalities in dilated cardiomyopathy: effect of biventricular pacing to correct interventricular dyssynchrony.
OBJECTIVE To measure ventricular contractile synchrony in patients with dilated cardiomyopathy (DCM) and to evaluate the effects of biventricular pacing on contractile synchrony and ejection fraction. BACKGROUND Dilated cardiomyopathy is characterized by abnormal ventricular activation and contraction. Biventricular pacing may promote a more coordinated ventricular contraction pattern in thes...
متن کاملThe effect of ventricular sequential contraction on helical heart during pacing: high septal pacing versus biventricular pacing.
OBJECTIVE To investigate the effect of biventricular and high septal pacing on the normal contraction sequence of the helical ventricular myocardial band, and its impact on left ventricular function. METHODS Ten pigs (25-68 kg) underwent analysis of percent segmental shortening (SS%) by sonomicrometry, with crystals placed along the fiber orientation of the ascending, descending segments, and...
متن کاملBiventricular mechanical asynchrony predicts hemodynamic effect of uni- and biventricular pacing.
We tested whether biventricular resynchronization explains contractile function changes with univentricular and biventricular pacing in heart failure patients with varying magnitudes of baseline biventricular asynchrony. Thirty patients (New York Hospital Association class > or = III, QRS duration > or =120 ms) were tested. Contractile function was measured by left ventricular maximum first der...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2010
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2010.01.077