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Determination of the energy requirements in mechanically ventilated critically ill elderly patients in different BMI groups using the Harris-Benedict equation.
J Formos Med Assoc 2018; 117(4):301-307JF

Abstract

BACKGROUND

Due to studies on calorie requirement in mechanically ventilated critically ill elderly patients are few, and indirect calorimetry (IC) is not available in every intensive care unit (ICU). The aim of this study was to compare IC and Harris-Benedict (HB) predictive equation in different BMI groups.

METHODS

A total of 177 mechanically ventilated critically ill elderly patients (≧65 years old) underwent IC for measured resting energy expenditure (MREE). Estimated calorie requirement was calculated by the HB equation, using actual body weight (ABW) and ideal body weight (IBW) separately. Patients were divided into four BMI groups. One-way ANOVA and Pearson's correlation coefficient were used for statistical analyses.

RESULTS

The mean MREE was 1443.6 ± 318.2 kcal/day, HB(ABW) was 1110.9 ± 177.0 kcal/day and HB(IBW) was 1101.5 ± 113.1 kcal/day. The stress factor (SFA = MREE ÷ HB(ABW)) was 1.43 ± 0.26 for the underweight, 1.30 ± 0.27 for the normal weight, 1.20 ± 0.19 for the overweight, and 1.20 ± 0.31 for the obese. The SFI (SFI = MREE ÷ HB(IBW)) was 1.24 ± 0.24 for the underweight, 1.31 ± 0.26 for the normal weight, 1.36 ± 0.21 for the overweight, and 1.52 ± 0.39 for the obese. MREE had significant correlation both with REE(ABW) = HB(ABW) × SFA (r = 0.46; P < 0.0001) and REE(IBW) = HB(IBW) × SFI (r = 0.43; P < 0.0001).

CONCLUSION

IC is the best accurate method for assessing calorie requirement of mechanically ventilated critically ill elderly patients. When IC is not available, using the predictive HB equation is an alternative choice. Calorie requirement can be predicted by HB(ABW) × 1.20-1.43 for critically ill elderly patients according to different BMI groups, or using HB(IBW) × 1.24-1.52 for patients with edema, ascites or no available body weight data.

Authors+Show Affiliations

Department of Dietetics, MacKay Memorial Hospital Taipei Branch, Taipei City, Taiwan; PhD Program in Nutrition & Food Science, Fu Jen Catholic University, New Taipei City, Taiwan.Department of Critical Care Medicine, MacKay Memorial Hospital Taipei Branch, Taipei City, Taiwan.Department of Critical Care Medicine, MacKay Memorial Hospital Taipei Branch, Taipei City, Taiwan.Department of Critical Care Medicine, MacKay Memorial Hospital Taipei Branch, Taipei City, Taiwan.Department of Critical Care Medicine, MacKay Memorial Hospital Taipei Branch, Taipei City, Taiwan.PhD Program in Nutrition & Food Science, Fu Jen Catholic University, New Taipei City, Taiwan; Department of Nutritional Science, Fu Jen Catholic University, New Taipei City, Taiwan. Electronic address: 031806@mail.fju.edu.tw.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29336938

Citation

Hsu, Pi-Hui, et al. "Determination of the Energy Requirements in Mechanically Ventilated Critically Ill Elderly Patients in Different BMI Groups Using the Harris-Benedict Equation." Journal of the Formosan Medical Association = Taiwan Yi Zhi, vol. 117, no. 4, 2018, pp. 301-307.
Hsu PH, Lee CH, Kuo LK, et al. Determination of the energy requirements in mechanically ventilated critically ill elderly patients in different BMI groups using the Harris-Benedict equation. J Formos Med Assoc. 2018;117(4):301-307.
Hsu, P. H., Lee, C. H., Kuo, L. K., Kung, Y. C., Chen, W. J., & Tzeng, M. S. (2018). Determination of the energy requirements in mechanically ventilated critically ill elderly patients in different BMI groups using the Harris-Benedict equation. Journal of the Formosan Medical Association = Taiwan Yi Zhi, 117(4), pp. 301-307. doi:10.1016/j.jfma.2017.12.010.
Hsu PH, et al. Determination of the Energy Requirements in Mechanically Ventilated Critically Ill Elderly Patients in Different BMI Groups Using the Harris-Benedict Equation. J Formos Med Assoc. 2018;117(4):301-307. PubMed PMID: 29336938.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of the energy requirements in mechanically ventilated critically ill elderly patients in different BMI groups using the Harris-Benedict equation. AU - Hsu,Pi-Hui, AU - Lee,Chao-Hsien, AU - Kuo,Li-Kuo, AU - Kung,Yu-Chung, AU - Chen,Wei-Ji, AU - Tzeng,Min-Su, Y1 - 2018/01/12/ PY - 2017/08/22/received PY - 2017/12/13/revised PY - 2017/12/20/accepted PY - 2018/1/18/pubmed PY - 2018/9/27/medline PY - 2018/1/17/entrez KW - Body Mass Index KW - Elderly critical care KW - Harris–Benedict equation KW - Indirect calorimetry SP - 301 EP - 307 JF - Journal of the Formosan Medical Association = Taiwan yi zhi JO - J. Formos. Med. Assoc. VL - 117 IS - 4 N2 - BACKGROUND: Due to studies on calorie requirement in mechanically ventilated critically ill elderly patients are few, and indirect calorimetry (IC) is not available in every intensive care unit (ICU). The aim of this study was to compare IC and Harris-Benedict (HB) predictive equation in different BMI groups. METHODS: A total of 177 mechanically ventilated critically ill elderly patients (≧65 years old) underwent IC for measured resting energy expenditure (MREE). Estimated calorie requirement was calculated by the HB equation, using actual body weight (ABW) and ideal body weight (IBW) separately. Patients were divided into four BMI groups. One-way ANOVA and Pearson's correlation coefficient were used for statistical analyses. RESULTS: The mean MREE was 1443.6 ± 318.2 kcal/day, HB(ABW) was 1110.9 ± 177.0 kcal/day and HB(IBW) was 1101.5 ± 113.1 kcal/day. The stress factor (SFA = MREE ÷ HB(ABW)) was 1.43 ± 0.26 for the underweight, 1.30 ± 0.27 for the normal weight, 1.20 ± 0.19 for the overweight, and 1.20 ± 0.31 for the obese. The SFI (SFI = MREE ÷ HB(IBW)) was 1.24 ± 0.24 for the underweight, 1.31 ± 0.26 for the normal weight, 1.36 ± 0.21 for the overweight, and 1.52 ± 0.39 for the obese. MREE had significant correlation both with REE(ABW) = HB(ABW) × SFA (r = 0.46; P < 0.0001) and REE(IBW) = HB(IBW) × SFI (r = 0.43; P < 0.0001). CONCLUSION: IC is the best accurate method for assessing calorie requirement of mechanically ventilated critically ill elderly patients. When IC is not available, using the predictive HB equation is an alternative choice. Calorie requirement can be predicted by HB(ABW) × 1.20-1.43 for critically ill elderly patients according to different BMI groups, or using HB(IBW) × 1.24-1.52 for patients with edema, ascites or no available body weight data. SN - 0929-6646 UR - https://www.unboundmedicine.com/medline/citation/29336938/Determination_of_the_energy_requirements_in_mechanically_ventilated_critically_ill_elderly_patients_in_different_BMI_groups_using_the_Harris_Benedict_equation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0929-6646(17)30608-3 DB - PRIME DP - Unbound Medicine ER -