Determinant of LV preload – MCQ – Answer

Determinant of LV preload – MCQ – Answer


Which of the following is not a determinant of left ventricular preload? – Correct Answer: d) Aortic pressure

Aortic pressure determines the left ventricular afterload.

Left atrial pressure is the left ventricular filling pressure. Increase in preload enhances function in normal heart. In a failing heart, initially increasing preload enhances function, but in advanced heart failure, overstretching of the myocardium is counterproductive. Decreasing afterload helps in heart failure by increasing the ventricular performance.

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