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A respirometer is a device used to measure the rate of respiration [1] of a living organism by measuring its rate of exchange of oxygen and/or carbon dioxide. [2] They allow investigation into how factors such as age, or chemicals affect the rate of respiration. [3]
Various other methods to measure respiratory rate are commonly used, including impedance pneumography, [4] and capnography which are commonly implemented in patient monitoring. In addition, novel techniques for automatically monitoring respiratory rate using wearable sensors are in development, such as estimation of respiratory rate from the ...
Respirometry depends on a "what goes in must come out" principle. [6] Consider a closed system first. Imagine that we place a mouse into an air-tight container. The air sealed in the container initially contains the same composition and proportions of gases that were present in the room: 20.95% O 2, 0.04% CO 2, water vapor (the exact amount depends on air temperature, see dew point), 78% ...
to detect respiratory disease in patients presenting with symptoms of breathlessness, and to distinguish respiratory from cardiac disease as the cause [8] to measure bronchial responsiveness in patients suspected of having asthma [8] to diagnose and differentiate between obstructive lung disease and restrictive lung disease [8]
Respiratory pressure meter Measuring respiratory muscle strength is a long-established method of assessing the mechanics of breathing. Respiratory muscle dysfunction (i.e., reduced strength or endurance) should be distinguished from lung function abnormalities and measured separately.
A respiratory examination, or lung examination, is performed as part of a physical examination, [1] ... In addition to measuring the patient's respiratory rate, the ...
The measurement of peak expiratory flow was pioneered by Martin Wright, who produced the first meter specifically designed to measure this index of lung function. Since the original design of instrument was introduced in the late 1950s, and the subsequent development of a more portable, lower cost version (the "Mini-Wright" peak flow meter ...
Whole-body plethysmography is used to measure respiratory parameters in conscious unrestrained subjects, including quantification of bronchoconstriction. The standard plethysmograph sizes are for the study of mice, rats and guinea pigs.