摘要
对一例家族性长QTV综合征患者,以肾上腺素增量输液及心房增频起搏,而引发早期后除极、U波及双向性室性心动过速。提示:交感神经活动增强在扭转性室性心动过速性晕厥的发作中具有重要的作用。
Increasing doses of epinephrine infusion and atrial incremental pacing to induce early afterdepolarization (EAD). U wave, and dual ventricular tachycardia in a patient with familial iong QTU syndrome were observed. This paper suggests that a heightened sympathetic tone plays a significant role in the genesis of TdP-induced syncope.
关键词
U波
心动过速
肾上腺素
心脏起搏
Early afterdepolarization
U wave
Ventricualr tachycardia
Sympathetic tone