洋地黄中毒时最常引起心律失常,如频发室性早搏,呈二、三联律或房室传导阻滞等。这些心律失常,也见于心力衰竭而洋地黄用量不足时。对两者的鉴别除应结合用药剂量和有无诱发因素(如缺钾、严重心肌损害、肾功能不全)加以考虑外,以下各点有助于对洋地黄中毒的诊断:(1)原无心律 Digitalis poisoning most often cause arrhythmias, such as frequent ventricular premature beats, was two or three laws or atrioventricular block and so on. These arrhythmias are also seen in heart failure and when digitalis is under-used. In addition to the combination of the two should be combined with the dose and the absence of predisposing factors (such as potassium deficiency, severe myocardial damage, renal insufficiency) to be considered, the following points contribute to the diagnosis of digitalis intoxication: (1) the original Heart rate