
Keywords: ECG، الکتروکاردیوگرام یا الکتروکاردیوگرافی; A-H interval, atrium to His bundle interval; CSM, carotid sinus massage; ECG, electrocardiogram or electrocardiographic; H-V interval, interval from His bundle deflection to ventricular depolarization; ICD, implantable cardioverter-defibrillator; SUDS, su