Which clinical manifestation is a classic hallmark sign of left-sided heart failure resulting from elevated pulmonary capillary wedge pressure?

Answer and explanation

Correct answer: C. Paroxysmal nocturnal dyspnea and bilateral pulmonary crackles

  1. Step 1: Differentiate backward failure mechanisms between left and right heart chambers.
  2. Step 2: Left ventricular failure causes backward hydrostatic pressure buildup in the pulmonary vasculature, leading to pulmonary congestion, exertional dyspnea, orthopnea, paroxysmal nocturnal dyspnea (PND), and bilateral inspiratory crackles.
Answer
Paroxysmal nocturnal dyspnea and bilateral pulmonary crackles.
Why not the others: Dependent peripheral edema, JVD, and hepatomegaly reflect systemic venous congestion characteristic of right-sided heart failure.

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