Cardiology Made Clearwith Dr. Freeman
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PATIENT EDUCATION · CATHETER ABLATION

What to expect on my procedure date

Prepare for catheter ablation and learn how to care for yourself afterward.

Section 1 of 4 · Your procedure day

← Catheter ablation: procedure and recovery: the short explanation
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All 4 sections, including text and pictures · 11 pages

SECTION 1

Your procedure day

This guide is for catheter ablation for AFib, atrial flutter, SVT, or premature beats. Your procedure team’s written instructions take priority because preparation and recovery can vary.

Before you arrive

  • Confirm your arrival time and procedure location.
  • Follow the fasting instructions provided by your procedure team.
  • Follow your specific medication plan. Do not stop blood thinners, heart medicines, or diabetes medicines on your own.
  • Arrange for an adult to drive you home and stay with you for the first 24 hours after sedation or anesthesia. Do not drive for 48 hours after the procedure.
  • Bring identification, your medication list, and information about allergies. Leave valuables at home.

Checking in

Your team reviews your health history, medicines, allergies, and consent. A nurse checks your vital signs and places an IV. You may have blood tests or an EKG.

The groin area is cleaned and, if needed, hair is clipped.

Will I be asleep?

Your doctor will tell you whether your procedure will be performed with general anesthesia or moderate sedation. With general anesthesia, you are asleep. With moderate sedation, you may be relaxed and sleepy but sometimes aware of your surroundings.

During the ablation

Your EP guides thin catheters through blood vessels to your heart, identifies the electrical signals involved in your rhythm, and delivers energy to the treatment area. Some procedures require testing or briefly bringing on the abnormal rhythm to locate its source.

For AFib: reaching the pulmonary veins

1. How the catheter reaches the left atrium

Cutaway heart illustration showing an ablation catheter entering through the inferior vena cava, passing through the right atrium and atrial septum into the left atrium, with its circular tip around a pulmonary vein opening and the left atrial appendage visible.
The catheter travels from a vein in the groin through the inferior vena cava (IVC) to the right atrium, then crosses the wall between the upper chambers to reach the left atrium. Its circular tip is shown around one pulmonary vein opening. Pulmonary vein isolation (PVI) creates an electrical barrier that keeps signals from the pulmonary veins from entering the atrium. All pulmonary veins are treated during PVI. This is a simplified illustration of the route and catheter position.
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2. How ablation isolates the trigger cells

Left atrial close-up with labels pointing to gold AFib trigger cells near a pulmonary vein opening and to the blue and silver ablation catheter, whose circular tip surrounds another vein opening.
The circular ablation catheter is shown around a pulmonary vein opening. The gold clusters represent AFib trigger cells. Ablation creates an electrical barrier that keeps signals from the pulmonary veins from entering the left atrium.
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Heart Rhythm Society: AFib ablation and pulmonary vein isolation

Procedure length varies by the rhythm and complexity. Allow time for check-in, preparation, the procedure, and recovery rather than planning around the ablation time alone.

Immediately afterward

After the catheters are removed, your groin access sites will be closed using a vascular closure device. Nurses monitor your heart rhythm, blood pressure, and groin sites while you recover.

You may need to lie flat and keep your leg straight for a period of time. Wait for your nurse’s permission before getting up. Tell the nurse immediately about bleeding, swelling, worsening pain, chest discomfort, or difficulty breathing.

Going home

Many patients leave the same day; some need overnight observation. Before discharge, your team checks that it is safe for you to walk and reviews your medicines, wound care, activity limits, and follow-up.

Before you leave: Know when to take your next medication doses, whom to call with a concern, and when your follow-up is scheduled.

Sources & further readingAHA: Ablation and procedure dayCleveland Clinic: Care after catheter ablationGuy’s and St Thomas’: Recovery and groin warning signsHeart Rhythm Society: AFib ablation

Updated October 2026. Your procedure team’s instructions take priority.