Vejlsted H, Eliasen P
Scand J Thorac Cardiovasc Surg. 1978;12(2):91-4. doi: 10.3109/14017437809100355.
The level of serum magnesium was examined in relation to open-heart surgery. A significant fall below normal values was observed during the first postoperative day, probably caused by haemodilution during bypass. Serum concentrations were normal from the second postoperative day onwards. This result differs from observations at other centres. Two possible causes for this divergency are suggested: (1) a habitiually high dietary intake of magnesium from the drinking water and (2) a postoperative regime emphasizing the maintenance of a positive blood and plasma balance, thus supplying the patients with a considerable amount of magnesium. It is concluded that no indications for pre- , per- or postoperative supplementation of magnesium in association with cardiopulmonary bypass were found.
研究了血清镁水平与心脏直视手术的关系。术后第一天观察到血清镁水平显著低于正常值，这可能是由于体外循环期间的血液稀释所致。术后第二天起血清浓度恢复正常。这一结果与其他中心的观察结果不同。文中提出了造成这种差异的两个可能原因：（1）习惯性地从饮用水中大量摄入镁；（2）术后护理方案强调维持正血容量和血浆平衡，从而为患者补充了大量镁。结论是，未发现与体外循环相关的术前、术中或术后补充镁的指征。
