When Do Doctors Recommend Cardioversion For An Irregular Heartbeat?

 

Cardioversion is a treatment used to restore a normal heart rhythm in certain fast or irregular arrhythmias.

It is most often discussed for Atrial Fibrillation or Atrial Flutter, especially when symptoms are affecting daily life or the heart is working less efficiently.

What Cardioversion Tries To Do

The aim is to reset the rhythm back to sinus rhythm, which is the heart’s normal steady rhythm.

There are two main types:

  • Electrical cardioversion, where a controlled shock is given under sedation or anaesthetic

  • Chemical cardioversion, where medication is used to help restore the rhythm

When It May Be Recommended

Cardioversion may be considered if the arrhythmia is recent, causing significant symptoms, or has not improved enough with medication.

It may also be used urgently if the rhythm is causing low blood pressure, chest pain, heart failure symptoms, or collapse.

Why Blood Thinners May Be Needed

One of the main safety issues is stroke prevention. If AF or Atrial Flutter has been present for more than 48 hours, or the start time is unclear, clinicians usually need to reduce clot risk before cardioversion.

This may involve anticoagulation or a specialist scan, depending on the situation.

Cardioversion is not always a permanent cure, but it can be an important step in rhythm control and symptom relief.

If symptoms are severe, sudden, or worsening, call 999 immediately.

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