The latter equation calculates resting energy expenditure on the basis of body weight, height, minute ventilation, and body temperature and is clinically more accurate than the other predictive equations for metabolically stable, mechanically ventilated patients [ 21].
Predictive equations for resting energy expenditure (REE) are needed based on simple bedside parameters.
Accurate predictive equations of resting energy expenditure (REE) are crucial in devising nutritional strategies to manage overweight/obesity, especially in countries where these are highly prevalent.
This was summarized as total PA energy expenditure (PAEE; kJ/kg/day) and time spent in different intensities (based on a relative definition of 1 MET estimated using the Oxford equations for resting metabolic rate : sedentary (≤1.5 METs), light (1.5 3 METs), and moderate to vigorous (>3 METs).
As histamine-induced K+ conductance becomes the predominant one, we can use Nernst equation to calculate resting PMP.
The calorimeter measures inspired and expired oxygen and carbon dioxide, which are used in the Weir equation to calculate resting energy expenditure (REE).
Daily energy intake was calculated at baseline using the Mifflin equation to estimate resting energy expenditure (REE) (Mifflin et al 1990) and adjusted for activity using a multiplication factor of 1.5.
Although these recommendations are limited to observational studies, it is generally agreed that critically ill children, like adults, should receive 100 to 130% of the basal energy expenditure, which can be estimated with acceptable precision and accuracy by the Caldwell-Kennedy equation [ 49]: Resting energy expenditure kcal / kg / day = 22 + 31.
Use the following equation to determine resting metabolic rate: Women: (9.99 x weight (kg)) + (6.25 x height (cm)) – (4.92 x age) – 161 = RMR.
To evaluate the accuracy of seven predictive equations, including the Harris-Benedict and the Mifflin equations, against measured resting energy expenditure (REE) in hospitalized patients, including patients with obesity and critical illness.
