The frequencies of abnormal ECG increased along with ages, except sinus arrhythmias and preexcitation syndrome.
异常心电图除窦性心律失常、预激综合征外，异常率随年龄增高而递增；
Methods: 30 cases of familial preexcitation syndrome and 363 cases of sporadic patients were compared in clinical and electrophysiologic characteristics.
方法：总结了家族性预激综合征30例，散发性预激综合征363例，对两组患者的临床及电生理特点进行了比较。
Methods: 30 cases of familial preexcitation syndrome and 363 cases of sporadic patients were compared in clinical and electrophysiologic characteristics.
方法：总结了家族性预激综合征30例，散发性预激综合征363例，对两组患者的临床及电生理特点进行了比较。
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