ventricular tachycardia, you may need to continue antiarrhythmic therapy Are undergoing cryoablation of the AV node, you may require a pacemakerCall Your DoctorAfter you leave the hospital, contact your doctor if any of the following occurs:Signs of infection, including fever and chillsRedness, swelling, increasing pain, excessive bleeding, or discharge at the point of catheter insertionYour leg f