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Volume loading improves low cardiac output in experimental right ventricular infarction
Journal of the American College of Cardiology
|August 1, 1983
Summary
Volume loading improves cardiac output in right ventricular infarction by increasing right ventricular output, which enhances left ventricular preload. Pericardiotomy further boosts cardiac function and ventricular filling.
Area of Science:
- Cardiology
- Physiology
Background:
- Right ventricular infarction can lead to a low output state.
- The role of volume loading in this condition requires further investigation.
Purpose of the Study:
- To evaluate the effect of volume loading on cardiac output in experimental right ventricular infarction.
Main Methods:
- Isolated right ventricular infarction was induced in dogs.
- Volume loading and pericardiotomy were sequentially performed.
- Hemodynamic parameters including pressures, cardiac output, and ejection fractions were measured.
Main Results:
- Right ventricular infarction decreased cardiac output, right ventricular systolic pressure, and aortic pressure.
- Volume loading increased right ventricular systolic pressure, stroke work, aortic pressure, and cardiac output.
- Pericardiotomy further improved ventricular filling, stroke work, and cardiac output.
Conclusions:
- Volume loading enhances cardiac output in right ventricular infarction by augmenting right ventricular output and left ventricular preload.
- Elevated intrapericardial pressure impacts biventricular filling and may contribute to low cardiac output in right ventricular infarction.