Paroxysmal nocturnal dyspnea is most closely associated with which condition?

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Multiple Choice

Paroxysmal nocturnal dyspnea is most closely associated with which condition?

Paroxysmal nocturnal dyspnea reflects pulmonary congestion from left-sided heart failure. When a person lies down, venous blood from the lower body shifts toward the chest. If the left ventricle isn’t pumping effectively, blood backs up into the pulmonary veins, raising pressure in the lungs and causing sudden shortness of breath that wakes the person at night. This nocturnal pulmonary edema is a classic sign of left-sided heart failure. By contrast, right-sided heart failure primarily causes systemic venous congestion (leg edema, abdominal swelling, liver enlargement) rather than pulmonary edema. Hypertension alone without heart failure doesn’t typically cause this nocturnal pulmonary fluid buildup, and peripheral artery disease involves arteries in the limbs rather than the lungs.

Paroxysmal nocturnal dyspnea reflects pulmonary congestion from left-sided heart failure. When a person lies down, venous blood from the lower body shifts toward the chest. If the left ventricle isn’t pumping effectively, blood backs up into the pulmonary veins, raising pressure in the lungs and causing sudden shortness of breath that wakes the person at night. This nocturnal pulmonary edema is a classic sign of left-sided heart failure. By contrast, right-sided heart failure primarily causes systemic venous congestion (leg edema, abdominal swelling, liver enlargement) rather than pulmonary edema. Hypertension alone without heart failure doesn’t typically cause this nocturnal pulmonary fluid buildup, and peripheral artery disease involves arteries in the limbs rather than the lungs.

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