A pacemaker is a tiny device that is implanted in the chest to assist regulates the heartbeat. It is used to stop the heart from pumping too slowly. A surgical operation is needed to implant a heart monitor in the chest. A pacemaker is also known as a heart-pacing device. The following problems are treated using pacemakers: Slow heartbeat (bradycardia) Fainting spells (syncope) heart failure.
Defibrillators are gadgets that shock or pulse an electric current into the heart to get it to beat normally again. They are applied to stop or treat an irregular heartbeat that beats too slowly or too quickly, called arrhythmia. Defibrillators can also restart the heart if it stops beating unexpectedly. Defibrillators operate in a variety of ways. People who are having cardiac arrest can be saved using automated external defibrillators (AEDs), which are increasingly widespread in public places. Biventricular pacing to improve ventricular contractility is a rapidly evolving technology that has now been applied to children and young adults with intraventricular conduction delay, such as bundle branch block after cardiac surgery.