氯雷他定是一种选择性的组织胺受体阻滞剂。据以往文献报道未证实该药可诱发心律失常或对心脏的药物有何影响。本文首次报道氯雷他定诱发的QT间期延长及室性心动过速。 患者男性,59岁。以晕厥发作入院。来院途中心电监护发现有非持续性室速。入院前3天曾有类似晕厥 Loratadine is a selective histamine receptor blocker. According to previous reports in the literature did not confirm that the drug can induce arrhythmia or cardiac effects of drugs. This is the first report of loratadine induced QT prolongation and ventricular tachycardia. Male patient, 59 years old. To seizure onset admitted to hospital. Electric hospital care center to find non-sustained ventricular tachycardia. 3 days before admission had a similar syncope