Background: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare genetic disorder where catecholamine causes bidirectional ventricular tachycardia. potentially leading to cardiac arrest. In patients undergoing surgery. sympathetic responses can be triggered in situations associated with surgical stimulations as well as high anxiety before the surgery. https://editsbloomchices.shop/product-category/hair-ties/