A 58-year-old woman with a 20-year history of recurrent productive cough and haemoptysis undergoes spirometry and body plethysmography. The results show reduced FEV1/FVC ratio (0.62), reduced FVC (68% predicted), and total lung capacity of 72% predicted. The expiratory flow curve demonstrates a scooped appearance. The pattern marked **A** in the diagram is observed. Which of the following best explains the pathophysiological basis for this spirometric pattern in bronchiectasis?
Ready to test yourself?
Test your Medicine knowledge with AI-powered MCQs and detailed explanations — no signup required to try.
Sign up free and practice all 1 Bronchiectasis Mixed Pattern MCQs with AI-powered explanations tailored to your performance.
Create Free Account