1 MCQs in Medicine for NEET PG
A 45-year-old man with a history of cardiac surgery 6 months ago presents with progressive dyspnea and orthopnea. Spirometry shows reduced FVC (55% predicted) and reduced TLC, with a normal FEV1/FVC ratio of 0.82. When supine FVC is measured, it drops by 42% compared to upright FVC. The structure marked **A** in the diagram represents this restrictive ventilatory pattern. Which of the following clinical findings would MOST strongly support bilateral diaphragmatic paralysis as the underlying cause?
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