Methods ECG was conducted before and aner treatment in the patients with acute urticaria accompanied by precordial discomfort,tightness in the chest,and palpitation.

• 方法 对急性荨麻疹伴有心前区不适、胸闷、心悸等症状患者 ,治疗前进行心电图检查 ,经治疗荨麻疹消退后复查心电图 ,直到恢复正常。