A pacemaker is an electric medical device that’s generally about the size of a matchbox. A surgeon implants it under your skin to help manage irregular heartbeats called arrhythmias. Pacemakers can ...

Defibrillators use electrical shocks to restore a normal heart rate, especially in cases of life threatening arrhythmias or sudden cardiac arrest, while pacemakers use low-energy electrical pulses to ...

S. Arunachalam was awake and talking during a surgery, which involved replacing his aortic valve and putting a pacemaker into his heart. Doctors at SRM Institutes for Medical Science found the 79-year ...