PEF: The maximum expiratory flow rate, also name the peak expiratory flow rate, refers to the instantaneous flow rate when the expiratory flow rate is the fastest during the forced vital capacity measurement.
FEV1:the volume of the maximum exhalation after maximal deep inhalation, and the volume of exhaled breath in the first second of maximum exhalation. The FEV1% measurement is a commonly used indicator for determining asthma and COPD. Asthma is mainly due to expiratory breathing difficulties, so FEV1 The % measurement will decrease or decrease significantly.
FVC: forced vital capacity refers to the maximum amount of gas that can be exhaled as soon as possible after the best effort to inhale.
Reference value:
PEF:0-900LPM
FEV1:0.00-10.0L
FVC:0.00-10.0L
UNIT SIZE:120*49*29mm
Accuracy:+-0.5%
power :LI battery rechargeable
Product Advantage
Small size and easy to carry, the size of the palm of the host, no need for large-scale testing equipment, shell shape, convenient for adults, children, anytime, anywhere detection.
Small decibels, no noise.
Non-contact breath detectors are easy to breathe and more professional.
It is painless, easy, healthy and non-polluting.
Strong compliance, accurate testing, and more scientific breathing.
Excellent product quality, has obtained the EU CE ...certification
Vital capacity
Vital capacity refers to the amount of gas that is exhausted as much as possible after maximal inhalation. Including tidal volume, supplemental inspiratory volume and supplemental expiratory volume.
Test the maximum ventilation capacity of human breathing, the volume reflected by the value and the expansion ability of the lung. The significance of measuring vital capacity is to measure the cardiopulmonary capacity. People with strong lung capacity generally have very good cardiopulmonary function.