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KMID : 1034120170090020062
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Journal of Clinical Nutrition
2017 Volume.9 No. 2 p.62 ~ p.67
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Determination of the Stress Factor Calculated from the Changes in the Measured Resting Energy Expenditure with Indirect Calorimetry in Patients Undergoing Pancreaticoduodenectomy
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Kim Seon-Hyeong
Cho Baik-Hwan
Kim Sook-Bae
Jeong Mi-Jin
Yu Hee-Chul
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Abstract
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Purpose: To predict the energy expenditure using the stress factor representing the ratio of the metabolic variation between pre-operation and post-operation in a pancreaticoduodenectomy (PD).
Methods: This was a prospective study conducted on 17 patients (11 males and 6 females) who underwent PD at Chonbuk National University Hospital between March 2010 and October 2011. The rest energy expenditure was measured by indirect calorimetry 1 day before and 3 days after surgery. The height, weight, and fat free mass were also measured 1 day before surgery.
Results: The mean measured rest energy expenditure 1 day before PD (mREEpre) and 3 days after PD (mREEpost) were significantly different (16.8±2.6 vs. 18.8±3.5 kcal/kg/d, P=0.0076). The stress factor, representing the ratio of the metabolic changes between pre- and post-PD, was 1.12±0.17. The recommended energy requirement for PD patients is estimated to be 23∼24 kcal/ideal body weight/d [determined from the measured preoperative rest energy expenditure (16.8±2.6 kcal/kg/d)×activity factor (1.2∼1.3)×stress factor (1.12)].
Conclusion: PD patients maintained a hypermetabolic status and the applicable stress factor was 1.12.
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KEYWORD
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Indirect calorimetry, Pancreaticoduodenectomy, Stress factor, Rest energy expenditure
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