Weight Based Prediction Equations Result in Hypocaloric Feeding of Obese Patients

Michael Vest; Jillian Trabulsi; Patty McGraw; Mary Shapiro; James Halbert; Paul Kolm; Claudine Jurkovitz

doi:10.1378/chest.2251699

Weight Based Prediction Equations Result in Hypocaloric Feeding of Obese Patients

CHEST Journal ◽

10.1378/chest.2251699 ◽

2015 ◽

Vol 148 (4) ◽

pp. 232A

Author(s):

Michael Vest ◽

Jillian Trabulsi ◽

Patty McGraw ◽

Mary Shapiro ◽

James Halbert ◽

...

Keyword(s):

Obese Patients ◽

Prediction Equations ◽

Hypocaloric Feeding

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New body fat prediction equations for severely obese patients

Clinical Nutrition ◽

10.1016/j.clnu.2008.03.011 ◽

2008 ◽

Vol 27 (3) ◽

pp. 350-356 ◽

Cited By ~ 26

Author(s):

Lilian Mika Horie ◽

Maria Cristina Gonzalez Barbosa-Silva ◽

Raquel Susana Torrinhas ◽

Marco Túlio de Mello ◽

Ivan Cecconello ◽

...

Keyword(s):

Body Fat ◽

Obese Patients ◽

Prediction Equations ◽

Severely Obese

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Accuracy of prediction equations for calculating resting energy expenditure in morbidly obese patients

Annals of The Royal College of Surgeons of England ◽

10.1308/003588412x13171221501988 ◽

2012 ◽

Vol 94 (2) ◽

pp. 129-132 ◽

Cited By ~ 4

Author(s):

S Ullah ◽

R Arsalani-Zadeh ◽

J MacFie

Keyword(s):

Body Mass Index ◽

Weight Loss ◽

Gastric Bypass ◽

Indirect Calorimetry ◽

Resting Energy Expenditure ◽

Morbidly Obese ◽

Obese Patients ◽

Prediction Equations ◽

The Mean ◽

Accuracy Of Prediction

INTRODUCTION The accuracy of prediction equations for estimating resting energy expenditure (REE) in morbidly obese patients is unclear. The aim of this study was to compare the REE measured using bedside indirect calorimetry with commonly used prediction equations. METHODS A total of 31 morbidly obese patients were studied. Pre-operative REE was measured with indirect calorimetry and compared with estimated REE using the Harris–Benedict and Schofield equations. All patients subsequently underwent a Roux-en-Y gastric bypass and measurements were repeated at six weeks and three months following surgery. RESULTS The mean age of the patients was 47 years. The mean pre-operative body mass index was 46kg/m2. The mean REE measured using indirect calorimetry was 1,980kcal/day. The estimated REE using the Harris–Benedict and Schofield formulae was 2,195 and 2,129kcal/day respectively. The equations overestimated REE by 10% and 7%. Body weight and body mass index reduced significantly following Roux-en-Y gastric bypass. There was no significant change in measured REE over the three-month period. After weight loss the difference between the estimated and measured REE reduced to 1–3%. CONCLUSIONS Prediction equations overestimate REE in morbidly obese patients. Their accuracy improved after surgery induced weight loss, confirming their validity for the normal weight population. Indirect calorimetry should be used in morbid obesity.

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