1 MCQs in Medicine for NEET PG
A 54-year-old woman with severe idiopathic thoracic scoliosis (Cobb angle 88°) presents with progressive dyspnea, morning headaches, and ankle edema. Spirometry shows FVC 41% predicted, FEV1 44% predicted, and FEV1/FVC ratio 0.92. The pattern marked **A** in the diagram is consistent with her findings. Which of the following findings would BEST distinguish this extrapulmonary restrictive pattern from a parenchymal restrictive pattern due to idiopathic pulmonary fibrosis?
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