Reid’s index is used in which condition? (PNQ)
During an obstruction in airways, there is decrease in expiratory flow which become were pronounced when expiration is more forceful.
The major site of increased resistance in most individuals with COPD is in airways 2 mm diameter.
(Ref. Hari-18th ed., Pg- 2154)
Definitions COPD is a common progressive disorder of airway obstruction (FEV1 <80% predicted; FEV1 /FVC <0.7) with little or no reversibility Q.
1). It is defined clinicallyQ as cough, sputum production on most days for 3 consecutive months of, 2 successive years Q.
2). FEV1 reduced, MMRF reduced, Increase RV, Normal diffusion capacity.
REID INDEX – Ratio of the thickness of submucosal glands to that of the bronchial wall.
Normal →0.44 ± 0.09 in chronic bronchitis →0.52 ± 0.08
Extra Edge: Reid index is increased in chronic bronchitis.