Boyd J C, Bruns D E, Wills M R
Clin Chem. 1983 Jan;29(1):178-9.
Although both hypokalemia and hypomagnesemia have been linked with life-threatening cardiac arrhythmias, published studies disagree regarding the frequency of simultaneously low serum potassium and magnesium concentrations. To investigate the possible associations between the concentrations of these ions in serum, we carried out a retrospective study of all paired magnesium-potassium measurements reported from our laboratory during two separate two-week periods. Of 963 paired measurements in 421 patients, 12% of the samples were hypokalemic and 26% were hypomagnesemic. The frequency of hypomagnesemia was significantly greater in hypokalemic samples (38%) compared with nonhypokalemic samples (25%). The potential clinical importance of this relationship requires further investigation.
尽管低钾血症和低镁血症都与危及生命的心律失常有关，但已发表的研究在血清钾和镁浓度同时降低的频率方面存在分歧。为了研究血清中这些离子浓度之间可能存在的关联，我们对在两个不同的两周期间从我们实验室报告的所有镁 - 钾配对测量值进行了一项回顾性研究。在421例患者的963次配对测量中，12%的样本为低钾血症，26%为低镁血症。与非低钾血症样本（25%）相比，低钾血症样本中低镁血症的频率显著更高（38%）。这种关系的潜在临床重要性需要进一步研究。
