Morgan D B, Mearns A J, Burkinshaw L
J Thorac Cardiovasc Surg. 1978 Nov;76(5):673-7.
The dysrhythmia that happens after open-heart surgery has at times been attributed to potassium depletion. Therefore, in some centers, patients scheduled for open-heart surgery are routinely given potassium supplements. We have assessed the potassium status of 32 patients prior to cardiac surgery (1) by measurements of plasma, red cell, and leukocyte potassium levels and total body potassium before and after administration of potassium supplements (144 mmoles daily for 3 days) and (2) by the changes in urine potassium during the supplementation. On admission none of the patients showed evidence of a large potassium deficit, and none of them retained much of the supplemental potassium. The observations that have previously been taken as evidence of potassium depletion in such patients are discussed, and alternative explanations are suggested for all these observations.
心脏直视手术后出现的心律失常有时被归因于钾缺乏。因此，在一些中心，计划进行心脏直视手术的患者会常规补充钾。我们对32例心脏手术前患者的钾状态进行了评估：（1）通过测量补充钾（每日144毫摩尔，共3天）前后的血浆、红细胞和白细胞钾水平以及全身钾含量；（2）通过补充钾期间尿钾的变化。入院时，没有患者表现出大量钾缺乏的证据，而且他们中也没有人保留大量补充的钾。讨论了以前被视为此类患者钾缺乏证据的观察结果，并对所有这些观察结果提出了其他解释。
