forced expiratory flow (FEF[25-75])

Introduction

Forced expiratory flow between 25% & 75% of vital capacity indicating flow rate.

Clinical significance

• flow rate is diminished with obstructive lung disease, i.e. asthma & COPD

More general terms

• forced expiratory flow

Additional terms

• asthma
• chronic obstructive pulmonary disease (COPD)