By Sending A Controlled Electric Pulse To The Heart, Defibrillators Restore Normal Heartbeats

 

Defibrillators 

Defibrillators are life-saving medical devices that are used to restore the normal rhythm of the heart in case of sudden cardiac arrest (SCA). SCA is a medical emergency that occurs when the heart suddenly stops beating, which can lead to death if not treated immediately. Defibrillators are used to deliver an electric shock to the heart to help restore its normal rhythm.

There are two main types of defibrillators: automated external defibrillators (AEDs) and implantable cardioverter-defibrillators (ICDs). AEDs are portable devices that are commonly found in public places such as airports, shopping malls, and sports arenas. They are designed to be used by anyone, even those without medical training, in case of an emergency. ICDs, on the other hand, are implanted under the skin and are designed for people who are at high risk of SCA.

The basic principle behind Defibrillators is to deliver an electric shock to the heart that interrupts the chaotic electrical activity that causes SCA. The electric shock depolarizes the heart muscle, which causes the heart to stop beating for a brief moment. This brief pause allows the heart's natural pacemaker to reset, which can restore a normal heartbeat.

AEDs are designed to be easy to use and require no medical training to operate. Defibrillators typically come with step-by-step instructions and voice prompts that guide the user through the process of delivering the electric shock. AEDs are equipped with sensors that can detect the heart's rhythm and determine whether a shock is needed. If a shock is required, the AED will automatically charge itself and instruct the user to press a button to deliver the shock.

ICDs are more complex devices that are implanted under the skin in the chest area. They are used to monitor the heart's rhythm and deliver an electric shock if an abnormal rhythm is detected. ICDs are typically recommended for people who have a high risk of SCA due to underlying heart conditions such as arrhythmia or heart failure.

ICDs are also equipped with advanced features that allow them to pace the heart and deliver therapy such as anti-tachycardia pacing (ATP) to prevent SCA. ATP involves delivering a series of small electric shocks to the heart to interrupt an abnormal rhythm and restore a normal heartbeat.

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