Question

Which of the following findings indicate that indirect calorimetry data may be unacceptable?

1. Data were collected for 5 minutes.
2. RQ 0.61
3. CO2 varies by 10%.
4. O2 varies by 6%.

Answer 1

Indirect calorimetry data may be deemed unacceptable if it shows an RQ of 0.61, or if CO2 and O2 measurements vary significantly, as consistent and physiologically plausible measurements are crucial for reliable results.

Step-by-step explanation:

The findings that indicate indirect calorimetry data may be unacceptable include an RQ of 0.61, variations of CO2 by 10%, and O2 variance by 6%. A respiratory quotient (RQ) below the normal range of 0.7 to 1.0 can signify a measurement error or a non-physiological fuel mix being used for metabolism.

Variability in the amounts of CO2 and O2 measured also indicates that the data may be erratic or unreliable, as consistent measurements are necessary for accurate calorimetry. It's important in these measurements to ensure a steady state; thus a period of data collection significantly less than 5 minutes or variability in gas measurements beyond expected ranges can signal unacceptable data.