The Australian Lung Foundation
The Thoracic Society of Australia and New Zealand
Home C: Confirm diagnosis C2. Diagnosis C2.4 Flow volume tests

C2.4 Flow volume tests

Electronic spirometers allow for the simultaneous measure­ment of flow and volume during maximal expiration. Reduced expiratory flows at mid and low lung volumes are the earliest indicators of airflow limitation in COPD and may be abnormal even when FEV1 is within the normal range (>80%).

 

COPD-X Plan - Version 2.30 - December 2011