B—阻滞剂已广泛应用,自体中毒罕见,表现有心动过缓,低血压,心性休克,呼吸抑制,惊厥与昏迷。死亡多因心跳停止。神经并发症可能是直接作用或脑血流减低所致。心电图可有房室或室内阻滞。曾报告心得宁及甲磺心定(Sotalol)伴有窦性过速与心动过速。支气管痉挛一般不出现于急性 B-blockers have been widely used, rare poisoning, the performance of bradycardia, hypotension, cardiac shock, respiratory depression, convulsions and coma. Death due to more heartbeat. Neurological complications may be caused by a direct effect or a decrease in cerebral blood flow. ECG may have atrioventricular or intraventricular block. It has been reported that Ning Ning and mesylate (Sotalol) associated with sinus tachycardia and tachycardia. Bronchospasm generally does not appear acute