Living with ICD living day to day

Overview

An implantable cardioverter-defibrillator (ICD) is a small, battery-powered device placed under your skin, usually near your collarbone. It constantly watches your heart rhythm. If it detects a dangerously fast or irregular heartbeat, it sends a small electric shock to restore a healthy rhythm. This can be lifesaving.

Many people around the world live with an ICD. It is a well-established treatment for those at high risk of sudden cardiac arrest.

ICDs are most often used in people with severe heart failure, who have had a major heart attack, or who have a genetic condition that causes abnormal heart rhythms. They can be implanted in adults, and sometimes in children.

Symptoms

Common symptoms

• Tenderness, swelling, or a small bump at the implant site
• A feeling of the device under your skin
• Occasional twitching or jumping sensation if the device is testing or delivering a small shock
• Anxiety or fear of having the device shock you

Symptoms in children

• Younger children may need to avoid rough contact sports.
• They may feel self-conscious about the device being visible under the skin.
• They can usually play and be active, but with some limits.

Symptoms in older adults

• Older adults may have more falls or balance problems due to underlying heart disease.
• They may need help keeping the implant area clean and dry.
• The device can feel heavy or uncomfortable, especially during sleep.

Causes

Main causes

• A previous heart attack that damaged the heart muscle
• Heart failure with a weak heart pump
• A genetic heart rhythm condition (like long QT syndrome or Brugada syndrome)

Risk factors

• Coronary artery disease
• A family history of sudden cardiac death
• Previous cardiac arrest or dangerous arrhythmia

When to see a doctor

See a doctor urgently if:

• If you get a shock, always call your healthcare team to let them know (unless it's an emergency)
• If you have signs of infection at the site
• If you feel more tired or short of breath than usual
• If your ICD is beeping (some models make sounds)

Book a routine appointment if:

• Regular device check-ups, usually every 1 to 6 months
• If you have questions about activity or travel
• Before any medical procedure, tell your doctor you have an ICD

Diagnosis

The decision to place an ICD is made after a heart specialist (cardiologist) evaluates your condition. You won't 'diagnose' living with an ICD; the device is a treatment. But to determine if you need one, you'll have several tests.

Tests that may be done

• Electrocardiogram (ECG) to record heart rhythm
• Echocardiogram (ultrasound) to check heart structure and pumping strength
• Exercise stress test
• Holter monitor (a portable ECG worn for 24-48 hours)

What to expect at your appointment

Before getting an ICD, you will meet with a cardiologist who will explain the procedure, the benefits, and the risks. The device is placed under the skin, usually near the collarbone, during a short surgery. You'll usually stay in the hospital for a day or so to make sure the device works well.

Treatment

An ICD is a treatment for dangerous heart rhythms. It doesn't fix the underlying heart disease, but it is a powerful safety net. You may also need medicines to protect your heart and reduce the work it does.

Self-care at home

• Wear a medical alert bracelet or carry an ID card that says you have an ICD
• Keep your cell phone or music player on the opposite side of your body from the ICD, or at least 15 cm away
• Avoid strong magnetic fields such as MRI machines, large generators, and some anti-theft systems (tell your care team about any medical scans)
• Keep the implant area clean and watch for signs of infection

Medical treatments

Your doctor may prescribe medicines to help your heart work more efficiently, such as beta-blockers or other heart medications. Always take them exactly as prescribed. Some devices have a pacing feature that helps a slow heart beat.

When is surgery considered?

You may need a small procedure to replace the ICD battery (usually every 5-10 years) or to fix a lead (the wire that connects the ICD to your heart) if it moves or stops working.

Living with this condition

Getting back to daily life takes a little time. You can usually shower and go back to work within a week or two. You will probably feel the device under your skin, especially in the beginning. It's normal to be aware of it, but it should not cause constant pain.

Lifestyle tips

• You can do light to moderate physical activity after your doctor confirms it's safe
• Avoid heavy lifting or vigorous exercise for the first 4-6 weeks after surgery
• Driving restrictions may apply after a shock — always ask your doctor
• If you play sports, avoid contact activities like tackle football or hockey, or use extra protection

Diet and exercise

Eat a heart-healthy diet rich in vegetables, fruits, whole grains, and lean proteins. Limit salt and processed foods to ease strain on your heart. Exercise is good, but talk to your ICD clinic about what level is right for you. Walking and cycling are often good choices.

Mental health and emotional wellbeing

It is completely normal to feel anxious, depressed, or worried about your ICD delivering a shock. You may find yourself constantly checking the device or avoiding things you used to enjoy. Talk to your doctor about these feelings — you don't have to manage them alone. Some people benefit from counselling or joining a support group.

Prevention

Having an ICD itself cannot be prevented, but you can reduce the risk of complications by following your care plan. Keep your heart healthier by not smoking, managing blood pressure and diabetes, and taking your medicines as prescribed.

Vaccines

You should stay up to date with recommended vaccines, such as the flu and pneumonia vaccines, because infections can put extra stress on your heart.

Screening programmes

Your ICD is checked regularly at a clinic — usually over the phone or wirelessly. This helps catch problems early. You also need routine cardiac check-ups to monitor your underlying condition.

Complications

If left untreated

• If your dangerous heart rhythm is not treated, it can lead to sudden cardiac arrest, which is fatal without emergency help
• An ICD is designed to prevent this — but if it fails or is not followed up, the risk remains

Long-term outlook

Living with an ICD can feel overwhelming at first, but with time, most people find a new normal. The device is a reliable safety net that can save your life. With good follow-up and a healthy lifestyle, many people with ICDs live long, active lives.

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