Nitroglycerin reduces preload of which chambers?

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Multiple Choice

Nitroglycerin reduces preload of which chambers?

Explanation:
Nitroglycerin lowers preload by causing venodilation, which decreases venous return to the heart. Preload refers to how much the ventricles are filled at the end of diastole, so the end-diastolic volumes and pressures of both the left and right ventricles decrease. Therefore, preload is reduced in both ventricles. The atria aren’t the chambers where preload is defined in this context, and limiting it to only one ventricle would not reflect how venous return affects ventricles on both sides.

Nitroglycerin lowers preload by causing venodilation, which decreases venous return to the heart. Preload refers to how much the ventricles are filled at the end of diastole, so the end-diastolic volumes and pressures of both the left and right ventricles decrease. Therefore, preload is reduced in both ventricles. The atria aren’t the chambers where preload is defined in this context, and limiting it to only one ventricle would not reflect how venous return affects ventricles on both sides.

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