• Increase Font Size
  • Decrease Font Size
  • View as PDF

  • Assessment
    For healthy adults, how many times within a 24-hour period should indirect calorimetry measurements be taken to ensure accuracy?
    • Conclusion

      Two high quality studies (one in healthy females and one in males and females) recommend a single measurement is sufficient to represent resting metabolic rate (RMR) in a 24-hour period; though the first 5 minutes should be discarded.

       

    • Grade: II
      • Grade I means there is Good/Strong evidence supporting the statement;
      • Grade II is Fair;
      • Grade III is Limited/Weak;
      • Grade IV is Expert Opinion Only;
      • Grade V is Not Assignable.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.
    How many times within a 24-hour period should indirect calorimetry measurements be taken to ensure accuracy acccording to a study in a Veterans Health Administration transitional skilled care unit ?
    • Conclusion

      Setting: Veterans Health Administration transitional skilled care unit

      One study of moderate research quality in males residing in a Veterans Health Administration transitional skilled care unit recommends a single measurement is sufficient to represent resting metabolic rate (RMR) in a 24-hour period; though the first 5 minutes should be discarded.

       

    • Grade: III
      • Grade I means there is Good/Strong evidence supporting the statement;
      • Grade II is Fair;
      • Grade III is Limited/Weak;
      • Grade IV is Expert Opinion Only;
      • Grade V is Not Assignable.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.
    For critically ill, ventilated patients, how many times within a 24-hour period should indirect calorimetry measurements be taken to ensure accuracy?
    • Conclusion

      One measurement is sufficient for hospitalized, ventilated patients in a 24-hour period if steady state is achieved. In individuals unable to achieve steady state or tolerate measurement conditions,* two or more nonconsecutive single measurements may improve measurement value.

       

       

    • Grade: II
      • Grade I means there is Good/Strong evidence supporting the statement;
      • Grade II is Fair;
      • Grade III is Limited/Weak;
      • Grade IV is Expert Opinion Only;
      • Grade V is Not Assignable.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.
    In general, how many times within a 24-hour period should indirect calorimetry measurements be taken to ensure accuracy?
    • Conclusion

      In individuals achieving steady state, one measurement reliably indicated RMR. In individuals unable to achieve steady state or tolerate measurement conditions, two or more nonconsecutive single measurements may improve measurement value.

    • Grade: II
      • Grade I means there is Good/Strong evidence supporting the statement;
      • Grade II is Fair;
      • Grade III is Limited/Weak;
      • Grade IV is Expert Opinion Only;
      • Grade V is Not Assignable.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.