Importance of left ventricular function and systolic ventricular interaction to right ventricular performance during acute right heart ischemia
نویسندگان
چکیده
منابع مشابه
Acute right ventricular dilatation in response to ischemia significantly impairs left ventricular systolic performance.
BACKGROUND Right ventricular (RV) dilatation that occurs as a consequence of RV infarction is thought to produce hemodynamic instability by reducing left ventricular (LV) preload and compliance. We hypothesized that these geometric changes may also adversely affect LV systolic performance. METHODS AND RESULTS Twelve 40-kg pigs were studied. Integrated conductance catheters and micromanometers...
متن کاملLeft ventricular function during and after right ventricular pacing.
OBJECTIVES The aim of this research was to evaluate right ventricular pacing effects on left ventricular function. BACKGROUND Right ventricular pacing alters the ventricular activation sequence and reduces left ventricular ejection fraction (EF). It is unclear whether the observed reduction in EF can be completely attributed to the alteration in activation sequence. METHODS Twelve subjects ...
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Introduction:Asthma is the most common chronic inflammatory condition affecting the lower airways among children. Asthma may influence right ventricular (RV) function and patients may develop right ventricular hypertrophy, pulmonary hypertension and cor pulmonale. The main objective of this study is to determine RV dysfunction in asymptomatic asthmatic children as detected by ti...
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Three-compartment elastance modeling predicts that the magnitude of gain is solely dependent on the ratio of free wall and septal elastances. However, when nonlinearities in pressure-volume relationships are considered, the same model predicts that gain is load dependent. We therefore studied left-to-right ventricular interactions in the isolated cross-perfused canine heart preparation to deter...
متن کاملAlterations in left ventricular three-dimensional dynamic geometry and systolic function during acute right ventricular hypertension in the conscious dog.
Fifteen chronically instrumented, conscious dogs were studied to determine whether, in the intact circulation, mechanical interactions dictated by the anatomic contiguity of the two ventricles significantly alter left ventricular (LV) dynamic geometry and systolic function during acute right ventricular (RV) hypertension. The three-dimensional geometry of the left ventricle was monitored with t...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1992
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(10)80296-7