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Title: Metabolic profile of patients after elective open heart surgery
Authors: Lee, T.-L. 
Boey, W.-K. 
Woo, M.L.-H. 
Kumar, A. 
Lee, C.-N. 
Lee, C.Y.
Keywords: Metabolic profile
open heart surgery
Issue Date: Apr-1993
Citation: Lee, T.-L., Boey, W.-K., Woo, M.L.-H., Kumar, A., Lee, C.-N., Lee, C.Y. (1993-04). Metabolic profile of patients after elective open heart surgery. Journal of Anesthesia 7 (2) : 131-138. ScholarBank@NUS Repository.
Abstract: To evaluate the surgical stress of open heart surgery with moderate hypothermic cardiopulmonary bypass (CPB), oxygen consumption ( {Mathematical expression}), carbon dioxide production ( {Mathematical expression}) energy expenditure (REE), respiratory quotient (RQ), 24 hour-urinary urea nitrogen excretion (UUN), and glucose, fat and protein utilization were determined in 20 patients before and after open heart surgery. Proteins (albumin, prealbumin and transferin) and body weight were measured preoperatively and on 6th postoperative day (POD). Preoperative predicted EE as determined by the Harris-Benedict equation was correlated with measured REE. No significant alteration in {Mathematical expression}, {Mathematical expression}, REE, 24 hour UUN and protein utilization was observed on the first 6 PODs. RQ decreased significantly on the 1st, 3rd and 4th POD. This was attributed to greater fat utilization due to reduced calorie intake during the early postoperative period. Transport proteins reduced slightly but insignificantly. There was a significant reduction in body weight at the end of the study period due probably to loss of body water. We conclude that patients in the early postoperative period after uneventful open heart surgery are neither hypermetabolic nor hypercatabolic when compared with their stable state before operation. © 1993 Japanese Society of Anesthesiologists.
Source Title: Journal of Anesthesia
ISSN: 09138668
DOI: 10.1007/s0054030070131
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