Macfie J
Ann R Coll Surg Engl. 1984 Jan;66(1):39-42.
The energy requirements of surgical patients during intravenous nutrition have been estimated from separate measurements of resting metabolic expenditure, active metabolic expenditure and the increase in energy expenditure that occurs in response to feeding--the specific dynamic action. The results suggest that very few surgical patients will require more than 2000 kcals/day.
通过分别测量静息代谢消耗、活动代谢消耗以及进食后发生的能量消耗增加（即特殊动力作用），已估算出接受静脉营养的外科患者的能量需求。结果表明，极少有外科患者每天需要超过2000千卡的能量。
