An arrhythmia is an uneven heart rhythm. Learn more about the causes, risk factors, and treatment.
This device sends small electrical impulses to your heart muscle to keep a safe heart rate. It includes a pulse generator, which houses the battery and a tiny computer, and wires that send impulses to the heart muscle.Doctors mainly use ICDs to treat ventricular tachycardia and ventricular fibrillation, two life-threatening heart rhythms.
The ICD constantly tracks your heart rhythm. When it detects a very fast, unusual rhythm, it delivers an electric shock to the heart muscle to make it beat in a regular rhythm again. The ICD has two parts: the leads and a pulse generator. The leads are made up of wires and sensors that monitor the heart rhythm and deliver energy used for pacing or defibrillation. The generator houses the battery and a tiny computer. Energy is stored in the battery until it is needed.
When your heartbeat is dangerously fast or uneven, your heart muscle gets a higher-energy shock to restore a regular rhythm.Many ICDs give backup pacing to keep the heart rhythm if it slows too much.A lead is attached in the right ventricle. If needed, energy is delivered to the ventricle to restore a normal heart rhythm.Leads are attached in the right atrium and the right ventricle.
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