Cardioversion
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When is cardioversion used?
Cardioversion is mainly used for atrial fibrillation or atrial flutter. These are heart rhythm disorders in which the upper chambers of the heart beat too fast and in an uncoordinated way. As a result, the lower chambers also beat too fast and often irregularly, which can cause symptoms such as palpitations, shortness of breath, tiredness and dizziness.
If these rhythm disorders do not stop on their own or persist despite medication, cardioversion may be a suitable treatment option.
How does the procedure work?
There are two forms of cardioversion:
- Electrical cardioversion: under light sedation, a short and controlled electrical shock is delivered through two adhesive pads on the chest. The shock stops the abnormal rhythm so the heart can return to a normal rhythm.
- Medication-based cardioversion: medicines are given through an intravenous drip or as tablets to restore the heart rhythm. This is usually done in hospital under medical supervision.
What happens after the treatment?
Most people feel better quickly after a successful cardioversion. Blood-thinning medication is usually needed before and after the procedure to reduce the risk of blood clots. Your doctor will also assess how to keep the heart rhythm in the long term, for example with medication or follow-up treatment such as ablation.