任意尿流率下的提取分数和提取百分比。

Experientia. 1977 Jun 15;33(6):752-3. doi: 10.1007/BF01944170.

Extraction fraction of renal solutes is ordinarily calculated as a ratio of arterial and venous concentration differences. Calculations provided in the present manuscript illustrate the need to correct for changes in renal venous concentration when solute extraction is low and urine flow simultaneously high.

肾溶质的提取分数通常计算为动脉血和静脉血浓度差的比值。本手稿中的计算表明，当溶质提取率低且尿流同时较高时，需要对肾静脉浓度的变化进行校正。