处死动物后取心脏，称质量计算心脏指数。
心脏指数增加15%或以上定义为液体反应。
Fluid responsiveness was defined as an increase in cardiac index of 15% or greater.
确定心脏体积指数上限值。
The upper limit value of the relative heart volume was determined.
确定心脏体积指数上限值。
The upper limit value of the relative heart volume was determined.
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