Answers for heart patientsతెలుగులో చదవండి

Life with an ICD: can I exercise, and what if it shocks me?

Yes, most people with an ICD can exercise, and many go back to work, travel and sport. Life after an ICD implant has a few rules: for the arm, the phone, the kitchen and the car. This page gives the ICD precautions, the ICD vs pacemaker difference, and what to do after an ICD shock. At Cardiac Rehab, Hyderabad, people with an ICD exercise under physician supervision, with the heart trace watched.

What an ICD does

An ICD is an implanted shock device. It is a small box under the skin of your chest, near the collarbone. It watches your heart rhythm all the time. If it sees a dangerous fast rhythm, it first sends a run of small, fast pulses to bring the rhythm back. If that does not work, it gives one or more shocks.

The British Heart Foundation (BHF) puts it this way. An ICD is there to help you live your life, not to stop everyday things.

You may be offered an ICD after a cardiac arrest or a dangerous heart rhythm. You may also get one if you are at risk of one. The risk is higher with heart disease, after a heart attack, and with heart failure. A weak heart muscle and some inherited heart conditions raise it too. Some people with heart failure get a CRT-D. That is a heart failure pacemaker with a shock device built in.

ICD vs pacemaker: the difference

A pacemaker mainly treats a slow heartbeat. It sends small signals the whole time, and it never gives a shock. An ICD treats dangerous fast rhythms. It can pace too, but it can also shock. Most of the everyday rules are the same for both. We have a separate page on life with a pacemaker.

What an ICD shock feels like

The BHF says a shock can feel like a sudden jolt or thump in the chest or back. It may make you jump. Some people feel only a mild flutter, or nothing. It cannot shock a person who is touching you.

After a shock, follow the plan in the picture above. Your ICD clinic will read the device and tell you what happened. Some shocks turn out to be false alarms: the device fired when it was not needed. The clinic can adjust the settings.

The first weeks

• The wound usually heals in 3 to 4 weeks. Keep it clean and dry, as your care team shows you.
• Sleep on your back, or on the side away from the ICD, until the wound heals. A pillow under the arm can help.
• Go easy with the arm on the ICD side. For a pacemaker, the NHS says no heavy lifting and no elbow above the shoulder for 4 to 6 weeks. Ask your care team how long applies to you.
• Many people go back to work. When depends on the kind of work you do.

Exercise with an ICD

The BHF says being active is usually encouraged. You may need to change or adapt some sports. Contact sports are usually out. Sports that raise the arm, like golf, are usually fine once you have healed. Always check with your heart team before a new or harder activity.

The BHF adds one line we agree with: take part in cardiac rehab first, if you are offered it. It helps you rebuild confidence and fitness safely before you exercise more on your own.

What the studies say: a 2019 Cochrane review pooled 8 trials of cardiac rehab with exercise, in 1,730 people with an ICD. The programmes ran about 12 weeks. Fitness went up in the exercise groups. There was no sign of more shocks, and no sign of more serious problems, in the people who exercised. The trials were small and the evidence is rated low, so this is a promising answer, not a final one.

ICD precautions at home and outside

The BHF’s do’s and don’ts, updated 10 August 2026:

• Mobile phone: keep it at least 15 cm (6 inches) from the ICD. Do not carry it in a pocket over the device. Do not let headphones dangle over your chest. If a phone gets close, do not panic: the ICD goes back to normal when the phone moves away.
• Kitchen: microwaves are safe. With an induction stove, keep 60 cm (2 feet) between the ICD and the hob, and do not lean your chest over it.
• Safe: TVs, radios, electric drills and power tools.
• Avoid: pain-relief TENS machines. Keep magnetic clasps and body-toning belts away from the device.
• Driving: the rules differ by country, and your heart team tells you when you can drive again. Tell your insurer.
• Electric cars: safe. When charging, keep 30 cm (12 inches) between the ICD and the cable.
• Flying: safe. Show your device ID card at security. Ask for a hand search. Staff should not hold a hand-held metal detector over the ICD.
• Sex: safe once the wound has healed. A shock would not harm your partner; they might feel a brief tingle.
• Always carry your device ID card.

Check-ups and the battery

The BHF says you will be checked every 3 to 12 months, depending on your device and whether it has given treatment. Go even if you feel well. Many ICDs can also send their data from home.

The worry of the next shock

It is normal to feel anxious or low after an ICD, especially about whether a shock will come. A BHF clinical psychologist says this worry is a normal, healthy response to what has happened. After a shock, it can take days, weeks or months to feel calm again. That too is normal.

What helps, in her words: talk to your ICD clinic about your worries. Set a “worry time” and write them down. Distract yourself with music or something light. Try talking therapy if a shock was frightening. Join a cardiac rehab programme.

Call your doctor if

• the wound gets more swollen, red or sore, or leaks fluid,
• you have a high temperature,
• you feel dizzy or faint, or the problems you had before the ICD come back,
• you get a shock: follow the plan above.

What happens at Cardiac Rehab

1. A doctor checks you first.
2. You get an exercise plan made for you.
3. You exercise for 90 minutes, 3 times a week, for 6 months, under physician supervision.
4. Step by step, the exercise gets harder as you get stronger.

Why it helps with this

At Cardiac Rehab, people with an ICD exercise under physician supervision. Your heart trace (12-lead ECG) is watched while you exercise. The plan keeps your heart rate below the rate at which your ICD is set to act. That number is on your device report, so bring it, with your medicine list, to the first visit.

The BHF advice: do cardiac rehab first, if you are offered it. Build fitness and confidence there before you exercise more on your own.

A 2019 Cochrane review pooled 8 trials with 1,730 people with an ICD. Fitness went up with cardiac rehab. There was no sign of more shocks or more serious problems in the people who exercised.

Heart guidelines in the US (AHA and ACC) and in Europe (ESC) give cardiac rehab their highest grade: Class I, Level A.

Cardiac Rehab, Jubilee Hills, Hyderabad runs these sessions.

Book an appointmentChat with us on WhatsApp

Frequently asked questions

This page is general advice. Your own doctor knows your heart. If your doctor has told you something different, follow your doctor.

Written by Dr. Muralidar Babi, MBBS, MD (CMC Vellore), Cardiac Rehab Physician. TGMCI Reg. No. 59309.