what is normal peak flow measurement for male is it erv
Peak flow measurement is a procedure in which air flowing out of the lungs is measured. The measurement obtained is called the peak expiratory flow rate (PEFR), or peak expiratory flow (PEF).Peak flow measurement may be obtained using a spirometer, an instrument with a mouth piece that measures the amount of air breathed in and/or out and the rate at which the air is inhaled and expelled from the lungs.Peak flow may also be measured with a peak flow meter (PFM), a portable, hand-held device.Both devices take the measurement as an individual forcefully blows into the mouthpiece of the device. Spirometry is usually performed in a doctorâs office, clinic, or a hospital.eak flow may also be measured with a peak flow meter (PFM), a portable, hand-held device. Both devices take the measurement as an individual forcefully blows into the mouthpiece of the device. Spirometry is usually performed in a doctorâs office, clinic, or a hospital.