Dismiss Modal

Treatment

Chemical Cardioversion

Choose a preferred language

Cross-section of heart showing right atrium, left atrium, SA node, and AV node.

You had cardioversion today. In this procedure, a medicine was put into one of your veins. Or it was given to you to take by mouth (orally). This caused your heart to go back to a normal rhythm. In most cases, you should feel back to normal by the time you go home.


Home care

Follow these guidelines when caring for yourself at home:

  • You can go back to your usual activities once you feel back to normal.

  • Your health care provider may prescribe medicines to stop the abnormal heart rhythm from coming back. Take these medicines as directed. If you have certain rhythm problems, such as atrial fibrillation or atrial flutter, you may need to take blood thinners for at least 4 weeks after a cardioversion. If possible, don't schedule any surgeries or dental procedures during this time. This is so you won't have to stop taking the blood thinners. Stopping the medicines can raise your risk for stroke.


Follow-up care

Follow up with your health care provider, or as advised. You may need more testing. This might be an echocardiogram or event (holter) monitor. An event monitor checks your heart rhythm. Not all people with irregular heart rhythms have symptoms.

Call 911

Call 911 if you have: 

  • Pain in your chest, arm, shoulder, neck, or upper back

  • Trouble breathing

  • You have problems speaking or seeing

  • Weakness in an arm or leg

  • You can move your arm or leg on one side of your body

  • Fainting


When to call your doctor

Contact your doctor right away if:

  • You have weakness, dizziness, or lightheadedness.

  • You feel like your heart is fluttering or beating fast, hard, or irregularly (palpitations).

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Find a cardiac specialist

Because every beat matters, our cardiac doctors are dedicated to providing care like no other can.

Browse heart doctors

Related Articles
Read article
Heart Health
Holter Monitor

A Holter monitor is a small, portable device used to monitor your heart rhythm. You wear it for about 24 to 48 hours while you go about your normal daily activities. Read on to learn more.

Read article
Heart Health
Electrical Cardioversion

You had a cardioversion today. This is an electrical shock applied to the chest. The shock reset your heart rhythm back to normal. Read on to learn how to care for yourself at home.

Read article
Heart Health
Valsalva Maneuver

The Valsalva maneuver can help slow your heart when it's beating too fast. Learn how to do the Valsalva maneuver movements.

Read article
Heart Health
Surgery for Abdominal Aortic Aneurysm

During surgery for abdominal aortic aneurysm, the weakened aortic wall is replaced with a hollow man-made tube (a graft).