A subcutaneous implantable cardioverter defibrillator (S-ICD) or an artificial pacemaker is an electronic device that constantly monitors the heart rhythm of the patient who is at risk of cardiac arrest. It detects the irregularity in the cardiac rhythm and regulates it with a particular supply of energy. Image by: https://www.instagram.com/p/CITCDkshvkV/?igshid=17u7fcoie40l5
I myself have an ICD, mine is placed up near my left shoulder