CRT-D Implantation

In some heart failure, the two ventricles fall out of step and the heart wastes effort fighting itself. Cardiac resynchronisation therapy (CRT) paces both ventricles so they contract together; the “-D” adds a defibrillator that recognises a dangerously fast rhythm and shocks it back. One implant, two jobs.

Who it is for

It is considered when heart failure symptoms persist despite good medication and tests show the ventricles beating out of sync with a weakened ejection fraction. A CRT-P — the same resynchronisation without the defibrillator — suits some patients instead, and which is right for you is a cardiologist's call from your ECG and echo, not a catalogue choice.

What the procedure involves

Implantation is done under local anaesthetic with sedation and takes a few hours: leads are threaded through a vein near the collarbone into position under X-ray guidance, and the generator sits under the skin below it. One to two nights in hospital is typical.

Recovery and what to expect

The arm on the implant side is kept from reaching overhead for a few weeks while the leads settle; the small bulge under the skin becomes unremarkable. Most household appliances are safe; keep magnets a hand's width from the device, avoid contact sports, and carry the device card when you travel — asking for a hand search at airports. Patients commonly report less breathlessness and more energy as resynchronisation takes effect, though the degree varies and no one should promise you a number.

Before you agree to anything

Ask whether CRT-P or CRT-D is proposed and why, what your ejection fraction is, and how the device checks will be handled from your home country. We put those questions in writing and plan the first device check before you fly.