![]() ![]() ![]() Normal values are calculated based on age, height, and gender (American Lung Organization), and the lower the readings, the more restricted the breathing and more significant the obstruction (Mayo Clinic). The key measurements include forced vital capacity (FVC), which is the largest amount of air forcefully exhaled, and forced expiratory volume (FEV1), which is the largest amount of air the patient can force from their lungs in one second. ![]() The highest value obtained is considered the result (Mayo Clinic). The patient exhales into the tube as hard as he or she can for several seconds at least three times. It requires the patient to breath into a tube attached to the device. How Spirometers and Peak Flow Meters WorkĪ spirometer is a device that is found in a medical practitioner’s office, and spirometry, the test, takes about 15 minutes. It is considered useful for asthmatics because it enables the sufferer to decide whether to take quick-relief medication and/or a trip to the emergency room, as well as identifies triggers for asthma attacks in terms of location and time of day (American Lung Association). A doctor may order spirometry if a patient is wheezing, suffers from shortness of breath, or has a chronic cough (American Lung Association).Ī peak flow meter, on the other hand, is an inexpensive, easy-to-use, portable device that measures with what force a person expels air from their lungs. It may also be used to check the efficacy of a prescribed medication, whether the lung function is adequate prior to surgery, or to screen for lung disorders related to a person’s occupation. The test is used to diagnose diseases that affect breathing like asthma, chronic bronchitis, chronic obstructive pulmonary disease, pulmonary fibrosis, and emphysema. It is used to measure pulmonary or lung functioning or the amount of air inhaled and exhaled as well as the speed of exhalation (Mayo Clinic). Spirometry is a simple test performed by medical practitioner. ![]()
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