Which symptom is most characteristic of left-sided heart failure?

Which symptom is most characteristic of left-sided heart failure?

• A. Jugular venous distention
• B. Persistent cough with crackles in the lungs
• C. Peripheral edema
• D. Ascites

Answer: (B)

Left-sided heart failure leads to a backup of blood into the lungs, causing pulmonary congestion. This fluid overload in the lungs irritates airways and impairs gas exchange, producing a persistent cough and crackles heard on auscultation. These lung findings are the hallmark of left-sided failure because the problem starts in the heart’s left side and shows up primarily in the lungs. Jugular venous distention, peripheral edema, and ascites are more commonly associated with right-sided failure or advanced biventricular failure, reflecting systemic venous congestion rather than pulmonary edema. Therefore, the cough with lung crackles best fits the left-sided pattern.

Left-sided heart failure leads to a backup of blood into the lungs, causing pulmonary congestion. This fluid overload in the lungs irritates airways and impairs gas exchange, producing a persistent cough and crackles heard on auscultation. These lung findings are the hallmark of left-sided failure because the problem starts in the heart’s left side and shows up primarily in the lungs.

Jugular venous distention, peripheral edema, and ascites are more commonly associated with right-sided failure or advanced biventricular failure, reflecting systemic venous congestion rather than pulmonary edema. Therefore, the cough with lung crackles best fits the left-sided pattern.