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Functional capacity can also be expressed as "METs" and can be used as a reliable predictor of future cardiac events. [5] One MET is defined as the amount of oxygen consumed while sitting at rest, and is equal to 3.5 ml oxygen per kilogram body weight per minute.
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. It is approximately equal to Forced Vital Capacity (FVC). [1] [2] A person's vital capacity can be measured by a wet or regular spirometer.
The Functional Capacity Index (FCI) is a measure of a person's level of function for the following 12 months after sustaining some form of illness or injury. [1] The FCI incorporates ten physical functions and gives each a numerical value on a scale of 0 to 100, with 100 representing no limitations on a person's everyday function.
Functional residual capacity (FRC) is the volume of air present in the lungs at the end of passive expiration. [1] At FRC, the opposing elastic recoil forces of the lungs and chest wall are in equilibrium and there is no exertion by the diaphragm or other respiratory muscles.
Pulmonary function testing is a diagnostic and management tool used for a variety of reasons, such as: Diagnose lung disease. Monitor the effect of chronic diseases like asthma, chronic obstructive lung disease, or cystic fibrosis.
Physiological functional capacity (PFC) is the ability to perform the physical tasks of daily life and the ease with which these tasks can be performed. PFC declines at some point with advancing age even in healthy adults, resulting in a reduced capacity to perform certain physical tasks.
Hutchinson is regarded as the inventor of vital capacity because he found that with every inch of height vital capacity increased by eight cubic inches. [3] He also used his machine for the prediction of premature mortality. He coined the term 'vital capacity', which was claimed as a powerful prognosis for heart disease by the Framingham study ...
D LCO or T LCO (diffusing capacity or transfer factor of the lung for carbon monoxide (CO), [1]) is the extent to which oxygen passes from the air sacs of the lungs into the blood. Commonly, it refers to the test used to determine this parameter. It was introduced in 1909. [2]