Electrical Cardioversion: Before Your Procedure

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What is electrical cardioversion?

Electrical cardioversion treatment

Electrical cardioversion is a treatment for a heartbeat that isn't normal, such as atrial fibrillation. It uses a brief electric shock to reset your heart's rhythm.

Before the treatment, you will get medicine to make you sleepy. You should not feel any pain.

Your doctor will put patches on your chest. Or you might get them on both your chest and back. They send a brief electric current to your heart. In most cases, this restores the heart's normal rhythm right away.

Cardioversion itself takes about 5 minutes. But the whole procedure will likely take about 30 to 45 minutes. That includes time to recover.

Abnormal heart rhythms sometimes come back after the treatment. You may need to take medicines. These may help your heart keep its normal rhythm.

Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.

What happens before the procedure?

Procedures can be stressful. This information will help you understand what you can expect. And it will help you safely prepare for your procedure.

Preparing for the procedure

  • Understand exactly what procedure is planned, along with the risks, benefits, and other options.
  • Tell your doctors ALL the medicines and natural health products you take. Some of these can increase the risk of bleeding or interact with anesthesia.
  • If you take blood thinners, such as warfarin (Coumadin), clopidogrel (Plavix), or aspirin, be sure to talk to your doctor. He or she will tell you if you should stop taking these medicines before your procedure. Make sure that you understand exactly what your doctor wants you to do.
  • Your doctor will tell you which medicines to take or stop before your procedure. You may need to stop taking certain medicines a week or more before the procedure. So talk to your doctor as soon as you can.
  • If you have an advance care plan, let your doctor know. Bring a copy to the hospital. If you don't have one, you may want to prepare one. It lets your doctor and loved ones know your health care wishes. Doctors advise that everyone prepare these papers before any type of surgery or procedure.

What happens on the day of the procedure?

  • Follow the instructions exactly about when to stop eating and drinking. If you don't, your procedure may be cancelled. If your doctor told you to take your medicines on the day of the procedure, take them with only a sip of water.
  • Take a bath or shower before you come in for your procedure. Do not apply lotions, perfumes, deodorants, or nail polish.
  • Take off all jewellery and piercings. And take out contact lenses, if you wear them.

At the hospital or surgery centre

  • Bring a picture ID.
  • You will get medicine to make you sleepy.
  • The procedure will take about 30 to 45 minutes.

Going home

  • Be sure you have someone to drive you home. Anesthesia and pain medicine make it unsafe for you to drive.
  • Your doctor may have prescribed medicines to prevent blood clots (blood thinners). If so, you may need to take them for several months or longer.
  • You will be given more specific instructions about recovering from your procedure. They will cover things like diet, wound care, follow-up care, driving, and getting back to your normal routine.

When should you call your doctor?

  • You have questions or concerns.
  • You don't understand how to prepare for your procedure.
  • You become ill before the procedure (such as fever, flu, or a cold).
  • You need to reschedule or have changed your mind about having the procedure.

Where can you learn more?

Go to https://www.healthwise.net/patientEd

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