Abstract

Beta-blockers are commonly used to treat tachyarrhythmia’s in thyroid storm. However, there have been several cases in which cardiovascular collapse has been reported after administration of Propranolol [1]. This phenomenon seemed to be more common in Chinese [1]. The article presented an unusual case. A 14-year-old girl with thyrotoxicosis presented with wide complex tachycardia in an electrocardiogram (ECG). The rhythm was converted to a trial tachycardia after cardio version. Propranolol was started to control atrial tachycardia. The girl developed cardiorespiratory arrest soon after taking Propranolol. She required high-dose inotropic support and the use of an intra-aortic balloon pump after resuscitation.