Peak Expiratory Flow Meter

Peak Expiratory Flow Meter

A peak expiratory flow meter (PEF meter) is a simple, handheld medical device used to measure maximum expiratory flow. It primarily helps patients with asthma and chronic obstructive pulmonary disease (COPD) monitor changes in lung function at home, detect airway narrowing early, and adjust treatment plans accordingly.

Main Functions and Uses: Disease Monitoring: Allows patients to understand their lung status at any time and assess the level of control of asthma or COPD.

Attack Warning: A drop in the value before the onset of significant shortness of breath and wheezing can provide early warning of an asthma attack.

Desensitization Therapy Support: Regular monitoring is necessary during allergen-specific immunotherapy; adjustments can be made promptly if lung function is affected.

Correct Usage: Zeroing Preparation: Set the pointer to the bottom of the scale. Deep Inhalation: Take a deep breath as far as possible. Forceful Exhalation: Press your lips firmly against the mouthpiece to prevent air leakage and exhale forcefully in one breath. Recording Value: Read and record the value reached by the pointer. Repeat the test three times and record the highest value.

Target Audience: Note the difference between the adult and children's versions, as they differ in airway resistance and volume design. Regular Cleaning: Clean or replace the mouthpiece after each use to prevent bacterial growth.