1 MCQs in Medicine for NEET PG
A 7-year-old boy with suspected asthma is referred for pulmonary function testing. He is unable to perform reproducible forced expiratory maneuvers on spirometry. Body plethysmography is performed, and the parameter marked **D** in the diagram shows a value of 0.05 sec⁻¹·cmH₂O⁻¹, which is markedly reduced below the lower limit of normal (LLN 0.13). Which of the following best explains why this parameter is superior to FEV₁ alone for assessing airway obstruction in this patient?
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