Introduction
An implanted cardiac device is considered when it can provide a clear benefit that medication or observation cannot. A pacemaker can prevent the heart rate from becoming too slow. An implantable cardioverter defibrillator (ICD) can recognise and treat certain dangerous fast rhythms. Some people with heart failure may benefit from cardiac resynchronisation therapy (CRT), which coordinates how the heart chambers contract.
Deciding whether a device is right for you
The decision is based on the exact diagnosis, symptoms, heart function, future risk and your preferences. It should include a clear discussion of what the device is designed to do, what it cannot do, the implant procedure, ongoing monitoring and the possible practical impact on work, driving, exercise and travel.
After implantation, the device is checked regularly in a clinic and often remotely. The team can explain what to do if you experience symptoms, receive an ICD shock or have a planned procedure such as an MRI.
Key points
- Different devices serve different purposes; they are not interchangeable treatments.
- Implantation is a procedure with benefits and risks that must be considered in your individual context.
- Follow-up is a core part of device care, including checks of the battery, leads and programmed settings.
Patient note
“A device should never feel like a mysterious black box. Before deciding, you should understand exactly why it is being recommended and how it will fit into everyday life.”
Questions about cardiac devices
What problem is the device intended to solve? What are the alternatives? What are the procedure risks and recovery expectations? How will follow-up, remote monitoring and MRI safety be managed?
FAQ
Will a pacemaker treat every rhythm problem?
No. A pacemaker is mainly used to prevent a slow heart rate. Other conditions may need medication, ablation, an ICD or no invasive treatment at all.
What should I do if an ICD gives me a shock?
The device team will give you personalised instructions. If you feel unwell, have chest pain, severe breathlessness, faint, or receive repeated shocks, call 999.