作者报道红霉素使一例原发性Q-T延长综合征患者心室复极异常加重,形成扭转型室性心动过速.患者女性,29岁,自12岁起即有发作性眩晕,每次持续30～60秒,但从未出现意识丧失.入院前五天因干咳口服红霉素,每日四次,每次500mg.未服其他药物.三天后 The authors report that erythromycin aggravates ventricular repolarization in a patient with primary QT-prolongation syndrome and develops torsades-ventricular tachycardia. The female patient, age 29, has episodic dizziness since the age of 12 for 30 ~ 60 seconds, but never loss of consciousness. Five days before admission due to dry cough oral erythromycin, four times a day, each 500mg. No other medication. Three days later