Hypokalemia is defined as a serum potassium concentration lower than 3.5 millimeter liter.

低钾血症是指血清钾浓度低于3。5mm/L。

In experimental models, ECG changes produced by hyperkalemia follow a typical pattern that correlates with serum potassium levels: peaked T-wave, P wave widens and flattens, PR interval lengthens, QRS complex widens and eventually blends with T-wave.

在实验模型中，高钾血症引起的ECG改变遵循与血清钾水平相关的典型模式：T波峰值、P波变宽变平、PR间期延长、QRS复合波变宽并最终与T波融合。