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Your svt ep study & ablation checklist
Keep this guide with your medication plan and discharge instructions.
Before you arrive
- Read the medication and fasting plans. Your team must complete any intentional blanks before you follow them.
- Complete scheduled tests. Bring your current medicine list and allergy information.
- Arrange an adult driver and someone to stay with you after sedation.
Procedure date / arrival time:
Facility / check-in location:
Before you leave
Keep the current medication list, recovery instructions and follow-up details together. Have conflicting instructions resolved before discharge. Use the emergency warning signs in this guide.
Follow-up appointment or timeframe / booking instructions:
Practice phone: ____________________
After-hours number / route: ____________________
UNDERSTANDING YOUR PROCEDURE
SVT EP study & ablation
Before and after an electrophysiology study with possible SVT ablation
What the procedure does
An electrophysiology (EP) study uses thin catheters to test the heart’s electrical system and identify the cause of supraventricular tachycardia (SVT), a fast rhythm usually arising above the lower chambers. Common causes include an extra electrical pathway or a small looping circuit. If a suitable target is found, ablation can treat it during the same procedure.
On the day
After local numbing, catheters are usually passed through groin veins. Electrical pacing and sometimes medicine help bring on the rhythm safely while the team monitors you. Heat energy or freezing may be used for ablation. Sedation is tailored to comfort and the ability to bring on the rhythm; some patients need general anesthesia. An EP study does not guarantee ablation: the rhythm may not start, or the safest choice may be not to treat a particular site.
Benefits and risks
Ablation may reduce or prevent SVT episodes, but recurrence and repeat procedures are possible. Risks include bleeding, vessel injury, infection, heart perforation or fluid around the heart, clots or stroke, and injury to normal electrical conduction that may require a pacemaker. Serious complications and death are uncommon but possible.
Getting ready
Medicines and fasting
Use the written blood thinner or antiplatelet plan if you take one. Do not stop it on your own. The plan depends on your usual indication and the approach used; routine SVT ablation does not automatically require starting a blood thinner or aspirin.
Blood thinner / antiplatelet plan
Food and drink plan
SGLT2 medicines
GLP-1 medicines
Any separate written instructions for insulin or other diabetes medicines take priority; do not apply a general morning-medicine instruction to them.
Recovering at home
What to expect
Mild improving groin tenderness, bruising and tiredness can occur. Brief extra beats may happen, but a sustained return of the original racing rhythm should be reported. Do not assume every palpitation means the ablation failed.
Follow-up
Appointment / return-to-work details:
When to get help
Call 911
- Severe or sudden chest pain or trouble breathing, fainting, or stroke symptoms such as facial droop, arm weakness or trouble speaking.
- Heavy or continuing bleeding despite firm pressure, or rapidly growing painful swelling with weakness or faintness. Lie down, keep firm pressure on the bleeding site and have someone call 911.
- A cold, pale, numb or severely painful leg, especially on the catheter-access side.
Do not drive yourself. Do not wait for a message or remote-monitor response.
Contact the clinic the same day
Increasing access-site swelling, redness, warmth, drainage or pain; fever or chills; a sustained return of racing heartbeat or new persistent palpitations.
For warning symptoms after hours, use the contact route below. If you cannot reach the team and symptoms are worsening, seek urgent assessment. Use 911 for the severe symptoms listed above.
Practice phone: ____________________
After-hours number / route: ____________________
Follow your personalized medication and recovery plan. This guide supports, but does not replace, the consent discussion or your treating team’s instructions.