复极延缓综合征,文献上多称QT间期延长综合征。本综合征在心电图上表现为T波和U波异常,常有发作性快速室性心律失常伴晕厥或猝死。它与低血钙时因ST段延长而使QT延长和左室肥大时因QRS增宽和U波增大而致QT延长者不同。本综合征QRS时限正常而有宽大异常的T波或U波,复极开始的时间正常,而从T波开始到T波或U波终止的时间则明显延长。故以复极延缓综合征命名较QT间期延长综合征更确切。 QT间期的正常值与心率呈负相关。一般认为 Pooled retarded syndrome, the literature said QT prolongation syndrome. The syndrome in the ECG showed T wave and U wave abnormalities, often with paroxysmal rapid ventricular arrhythmias with syncope or sudden death. It is with hypocalcemia due to ST segment prolongation of QT prolongation and left ventricular hypertrophy due to QRS broadening and increased U wave caused by QT extension are different. The Syndrome QRS duration normal and large abnormal T wave or U wave, repolarization began normal time, and from T wave to T wave or U wave termination time was significantly prolonged. It is more complex delayed delaying syndrome named QT prolongation syndrome more accurate. The normal QT interval was negatively correlated with heart rate. Generally considered