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众所周知,低血钾可引起恶性室性心律失常。一些学者偶然发现心跳骤停复苏者血钾水平较低。本文作者对10例低血钾相关性心跳骤停者进行电生理研究,以期弄清这些病人是否需用抗心律失常药物治疗,及维持血钾水平正常能否预防再发心跳骤停。10例中6例室颤,2例单形性室速,2例多形性室速伴尖端扭转型室速的形态学特征。均由利尿剂诱发低血钾(2.2～3.3mEq/L)。QTc 间期延长,低血钾纠正后缩短。血清钙、镁水平正常。心跳骤停时7例正用地高辛,但地高辛水平治疗范围内。2例正用奎尼丁,另1例用普鲁卡因酰胺治疗室性早搏。心跳骤停前均无晕厥或室速、室颤史。
It is well-known that hypokalemia can cause malignant ventricular arrhythmias. Some scholars have occasionally found that serum cardioversion in those with cardiac arrest is lower. The authors performed electrophysiological studies on 10 hypokalemic-associated cardiac arrest patients to determine whether these patients should be treated with anti-arrhythmic drugs and whether maintenance of normal serum potassium levels prevented recurrence of cardiac arrest. Ventricular fibrillation in 6 cases, ventricular tachycardia in 2 cases and pleomorphic ventricular tachycardia in 2 cases. Diuretic induced hypokalemia (2.2 ~ 3.3mEq / L). QTc interval prolongation, hypokalemia corrected shorten. Serum calcium and magnesium levels were normal. 7 cases of cardiac arrest with digoxin, but digoxin levels within the treatment. 2 cases were using quinidine, the other with procaine amide treatment of premature ventricular contractions. No syncope or ventricular tachycardia before ventricular arrest, ventricular fibrillation history.