Medical MCQ-Left ventricular (LV) pressure-volume loop is shown below. During exercise within physiological limits, what is the effect on end-systolic volume?

Left ventricular (LV) pressure-volume loop is shown below. During exercise within physiological limits, what is the effect on end-systolic volume?

ESV decreases

ESV increases

ESV remains unchanged

ESV first decreases then increases

Question Category:

Physiology

Correct Answer:

ESV decreases

Description:

- There is increased sympathetic discharge that has a positive inotropic effect on the hea. - LV contractility increases, ejecting a greater stroke volume (SV). - Hence, there is decrease in ESV, as shown in the image.

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