Components of an indirect calorimeter may include which of the following? 1. Pressure manometer 2. Pneumotachometer 3. Pressure-sensitive transducer 4. Oxygen and carbon dioxide analyzers
a. 1 and 2 only
b. 2 and 4 only
c. 2, 3, and 4 only
d. 1, 2, 3, and 4
ANS: B
Indirect calorimeters contain analyzers for measuring the concentration of inspired and expired gases, oxygen (O2) and carbon dioxide (CO2), pneumotachometers, turbine flowmeters, or ultra-sonic vortex flowmeters to measure volume and flow, temperature-sensitive, solid-state trans-ducers to measure barometric pressure and exhaled gas temperatures.
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