While many people might be most familiar with the external defibrillators seen on TV, in emergency rooms or at sporting events, there are related devices that, although less obvious in their use, serve the same purpose of restoring prissy heart rhythms and thus averting viable death by cardiac arrest or heart attack. They are called implantable cardioverter defibrillators but are often referred to as pacemakers. An implantable cardioverter defibrillator is a device designed for individuals with definite forms of heart disease of defects that put them at recurring risk of sustained ventricular fibrillation, or cardiac arrest. The device is established either within the chest itself, or more commonly today within the blood vessels thus eliminating the need for dangerous open chest surgery.

A cardiac or heart defibrillator is a device that delivers an tense shock or pulse to the heart in order to alleviate certain disturbances or failures. Typically the goal is to change a fibrillation, or rapid and unsteady rhythm, into a slower and steadier beat that can be managed by a care provider. The shock comes from an electric current that is channeled finished the patient’s chest via electrodes or paddles. The current causes the heart muscle to contract, hopefully jolting it back to a more earthy pace. When a person is experiencing cardiac arrest, the most common cause is ventricular fibrillation. Here, the ventricles are contracting in a disorganized fashion that causes the heart to stop pumping comfortable blood. The other form of fibrillation, atrial fibrillation, is more usual and much little deadly. It is a disorder found in approximately two million Americans and causes the small upper chambers of the heart, or atria, to quiver rather than beat steadily. Though this isn’t normally a critical condition, atrial fibrillation can cause blood to pool and clot. If this clot becomes lodged in the brain or artery, a stroke can result.