Westenskow D R, Schipke C A, Raymond J L, Saffle J R, Becker J M, Young E W, Cutler C A
Department of Anesthesiology, University of Utah School of Medicine, Salt Lake City.
JPEN J Parenter Enteral Nutr. 1988 Jan-Feb;12(1):20-4. doi: 10.1177/014860718801200120.
At least nine different equations have been published for calculating metabolic expenditure by indirect calorimetry. This study examined the differences between equations when they are used for the nutritional assessment in an intensive care unit (ICU). Oxygen consumption and carbon dioxide production were measured in 36 ICU patients and used to calculate metabolic expenditure with the nine equations. The equations produced differences in metabolic expenditure which averaged from 0.8-96 kcal/day. The largest difference produced by any two of the nine equations was 189 kcal/day. Although differences in original stoichiometric data have resulted in numerous different equations for the calculation of metabolic expenditure, these differences are not clinically important. It makes little difference which equation is used for nutritional assessment in an ICU.
至少已有九种不同的方程式发表，用于通过间接测热法计算代谢消耗。本研究考察了这些方程式在重症监护病房（ICU）用于营养评估时的差异。对36名ICU患者测量了耗氧量和二氧化碳生成量，并使用这九个方程式来计算代谢消耗。这些方程式得出的代谢消耗差异平均为每天0.8 - 96千卡。九个方程式中任意两个产生的最大差异为每天189千卡。尽管原始化学计量数据的差异导致了许多用于计算代谢消耗的不同方程式，但这些差异在临床上并不重要。在ICU中使用哪个方程式进行营养评估差别不大。
