spirometry
Pronunciation: spy-ROM-eh-tree
Pulmonary function test measuring lung volumes and airflow rates during forced breathing maneuvers.
Full Definition
Spirometry is a common pulmonary function test that measures the volume of air inhaled and exhaled, as well as the speed of breathing, to assess lung function and diagnose respiratory conditions. The test requires patients to breathe into a spirometer device while performing specific breathing maneuvers, including forced vital capacity (FVC) and forced expiratory volume in one second (FEV1). Results help diagnose obstructive diseases like asthma and COPD, restrictive lung diseases, and monitor treatment effectiveness. Pre- and post-bronchodilator testing can differentiate between reversible and irreversible airway obstruction.
In Context
- "Spirometry results revealed moderate obstructive impairment with an FEV1/FVC ratio of 0.65." — Diagnostic report
- "The patient's spirometry improved significantly after bronchodilator therapy." — Follow-up assessment