Objective: To evaluate the usefulness of the modified Harris-Benedict formula predicting Energy Expenditure (EE) in pressure support ventilated, critically ill patient.
Setting: The intensive care unit (ICU) of a teaching hospital.
Patients: Fiftyfive patients admitted to ICU for acute respiratory failure, requiring mechanical ventilation.
Measurements And Results: After 12 hours at rest, EE was measured using indirect calorimetry (Datex-Deltatrac, with method exclusions - ICEE), and calculated using modified Harris-Benedict formula (MHBEE) (with correction for "hospital activity" and "stress factor") to calculate the bias between calculated and measured EE. Patients were divided into three groups on the basis of nutritional stress: A) non surgical/non septic patients (n = 10), B) complicated surgical patients (n = 21), C) severe infectious/multiple trauma patients (n = 24). In each group, a good correlation between calculated and measured EE was found [A) r = 0.809, p = 0.0046; B) r = 0.753 p = 0.0001; C) r = 0.711, p = 0.0001]. The bias (+/- SEM) was: A 175.1 (+/- 82) kcal/day, B 324.5 (+/- 64.5) kcal/day, C 366.7 (+/- 62.9) kcal/day. The mean difference value seems to be increased in the more stressed patients but these differences did not reach statistical significance (p = 0.23). A single correction factor for the original Harris-Benedict formula (OHBEE) was also calculated (ICEE/OHBEE) on each studied group: A) 1.20 (+/- 0.04), B) 1.28 (+/- 0.03), C) 1.50 (+/- 0.04) (p = 0.0001).
Conclusions: The use of both "stress" and "activity" correction factors seems to be excessive in pressure support ventilated ICU patients. A single correction factor, proportional to the intensity of the illness, should be used in mechanically ventilated patients. Compared to the original Harris-Benedict formula, we found an EE increment of about 20%, 30%, and 50% respectively in non-septic/non-complicated, surgical complicated, and multiple trauma/septic patients.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
[Comparative assessment of the basal metabolic rate in athletes with different level of physical activity based on prediction equations].
Vopr Pitan
November 2024
Federal Research Centre for Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.
The use of laboratory methods for assessing energy expenditure in athletes requires the availability of appropriate equipment and trained personnel, which is very difficult in the context of everyday sports activities. Therefore, the use of predictive equations that most accurately reflect energy expenditure is of paramount importance for developing dietary and recovery recommendations for athletes. of this research was to compare the basal metabolic rate (BMR) of highly skilled athletes obtained using predictive equations.
View Article and Find Full Text PDF[Bioimpedance analysis of body composition and rest energy expenditure in highly trained cross-country skiers].
Vopr Pitan
July 2024
Institute of Physiology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, 167982, Syktyvkar, Russian Federation.
The body composition monitoring using bioimpedance analysis (BIA) is important in assessing the functional state of athletes in sports. Based on changes of body composition, it is possible to optimize the actual dietary intake, as well as successfully organize the training process. of this research was to conduct a comparative assessment of BIA parameters and rest energy expenditure (REE) in highly trained cross-country skiers and young non-athletes.
View Article and Find Full Text PDFNutritional management in critically ill patients with COVID-19: a retrospective multicentre study.
Anaesthesiol Intensive Ther
May 2024
Departament of Acute Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland.
Introduction: Although nutritional treatment is an established pillar of multidisciplinary care provided in critical illness, there are many concerns regarding this issue in severe COVID-19. This observational, retrospective, multicentre study aimed to analyse the approach to nutritional treatment among selected intensive care units (ICUs) in Poland.
Material And Methods: The medical records of 129 patients hospitalized in five units due to respiratory failure following COVID-19 were analysed in terms of nutritional management on the eighth day of the ICU stay.
Determination of energy requirements after minor burns using indirect calorimetry: A descriptive cohort study.
JPEN J Parenter Enteral Nutr
April 2024
Department of Intensive Care and Burn Centre, University Hospital, University of Liège, Liège, Belgium.
Article Synopsis
- - The study investigated how minor burns can lead to increased metabolic rates (measured as measured energy expenditure or mEE) in outpatient adults using indirect calorimetry.
- - A total of 49 patients were evaluated, revealing that about 43% showed signs of hypermetabolism, and their energy intake was significantly lower than their mEE.
- - Findings suggest that patients with minor burns might require more energy than they are consuming, highlighting the importance of monitoring their dietary intake post-injury.
Measured versus estimated energy requirement in hospitalized patients.
Clin Nutr ESPEN
February 2024
Centre for Nutrition and Intestinal Failure, Department of Gastroenterology, Aalborg University Hospital and Department of Clinical Medicine, Aalborg University, Denmark. Electronic address:
Background & Aim: Failure to identify a patient's energy requirement has a variety of consequences both physiological and economical. Previous studies have shown that predictive formulas, including the Harris Benedict equation (HB), both over- and underestimates energy requirement in severely ill patients and healthy younger adults, compared to the golden standard, indirect calorimetry (IC). The comparison between measured and estimated energy requirements in hospitalized patients in regular wards is underreported.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!