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电解质和药物可引起小儿心律紊乱、如不及时处理,可有生命危险。一、低血钾症:呕吐、腹泻、幽门肥大性狭窄、长期胃肠道引流、使用肾上腺皮质激素、利尿过度及碱中毒等,均可造成低钾血症。低血钾可影响心脏传导系统的自律性与传导性,从而引起窦性心动过速、早搏、异位心动过速及Ⅰ～Ⅱ度房室传导阻
Electrolytes and drugs can cause arrhythmia in children, if not treated, can have life-threatening. First, hypokalemia: vomiting, diarrhea, pyloric hypertrophic stenosis, long-term gastrointestinal drainage, the use of adrenal cortex hormones, excessive diuresis and alkalosis, can cause hypokalemia. Hypokalemia can affect the self-regulation and conductivity of the cardiac conduction system, causing sinus tachycardia, premature beats, ectopic tachycardia and Ⅰ ~ Ⅱ atrioventricular conduction resistance