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Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume , tidal volume , and expiratory reserve volume .
The vital capacity of a typical adult is between 3 and 5 liters. Factors that affect a person’s vital capacity include age, sex, height, weight, and ethnicity. For instance, the residual volume and the functional residual capacity increase with age, resulting in a decrease in the vital capacity.
Vital capacity is the amount of air that the lungs can expel after having been filled completely. The vital capacity represents the change in volume from completely emptied lungs to completely filled lungs. In human medicine, vital capacity is an important measure of a person’s respiratory health.
Using our vital capacity calculator and only the values of your age and height (plus knowing your gender), you can estimate the volume of air that flows through your lungs.
It is about 80 percent of total capacity, or 4.8 liters, because some air remains in your lungs after you exhale. Forced vital capacity can decrease by about 0.2 liters per decade, even for healthy people who have never smoked.
Spirometry measures forced exhaled or inhaled air. The most important volumes for interpretation are the forced vital capacity (FVC; the total amount of air that can be expelled from full lungs)...
Spirometry measures two key factors: expiratory forced vital capacity (FVC) and forced expiratory volume in one second (FEV1). Your doctor also looks at these as a combined number known as the...
Forced vital capacity (FVC) is a pulmonary function measurement that represents the total amount of air a person can forcibly exhale from their lungs after taking the deepest breath possible. FVC is an important parameter in diagnosing and monitoring respiratory diseases like asthma and COPD. Image by OpenStax College.
Forced vital capacity (FVC). This is the largest amount of air that you can forcefully breathe out after breathing in as deeply as you can. An FVC reading that's lower than what's typical indicates restricted breathing.
Vital capacity – the volume expired, calculated from the X-axis; Shape of the curve – ‘spooning’ in obstructive disease, small overall loop in restrictive disease