Implantation of Leadless Pacemakers

How the heart works?

The heart is a muscular organ about the size of your fist. It is positioned slightly to the left of the centre of the chest. One of the main functions of the heart is to pump blood through the blood vessels (arteries and veins) and deliver oxygen and nutrients and carries away unwanted waste products. The heart can beat up to 100,000 times a day.

Heart rate is the number of heartbeats in one minute. The normal heart rate is between 60 and 100 beats in one minute, although each person’s heart rate is slightly different. Heart rhythm is how regular the pattern of your heartbeat is. Normal regular heart rhythm is known as sinus rhythm.

Pacemakers are implanted to help control your heartbeat. Pacemakers are used to correct a slow or irregular heartbeat or, even to help treat heart failure.

Traditional Pacemaker

A regular pacemaker comprises two parts:

  • Pulse generator – which holds the battery and electrical circuits.
  • Leads (electrodes). One to three flexible, insulated wires are each placed in a chamber of the heart. These electrodes deliver the electrical pulses to adjust your heart rate.

Leadless Pacemaker

The leadless pacemaker is a simple pacemaker that is used for patients that need only a single chamber in the heart paced.  It is a very basic pacemaker without any leads but once in place should last up to 10 years.  This type of pacemaker is only suitable for a small number of patients.

How is Micra placed into my heart?

The procedure is similar to a cardiac catheterisation.  The Cardiologist will insert a plastic catheter into a vein in your top of the leg and use the catheter to move Micra pacemaker into the right ventricle of your heart. The catheter is then removed.


Frequently Asked Questions

This is a guide only, please contact your Cardiologist or hospital for further information.

The leadless pacemaker is not intended for all patients. It is used in patients that need a single chamber pacemaker (also known as a ventricular pacemaker, or VVIR).

The Micra pacemaker is safe to use with MRI scanners. Once your pacemaker is implanted, you will be given a pacemaker ID card specifying the device model.

The recommended advice is that the patient should keep items containing magnets at least 6 inches away from an implanted pacemaker.

Do not place a mobile phone in your shirt pocket.

Do not use magnetic mattress pads and pillows.

Do not use handheld massagers.

Yes, once the household appliances are properly maintained and in good working order are safe to use, including microwave ovens, electric blankets, and heating pads.

The battery life of the leadless pacemaker depends on your heart condition and how often the pacemaker is used. The estimated battery life is about 12 years. However, each patient may differ. The Cardiologist and cardiology department will determine how much battery life is left in the pacemaker when you come in for a checkup.

The old device can be turned off, and a new Micra or a traditional system may be implanted.

Usually, your first follow-up appointment is one month to 6 weeks after implant, with additional follow-ups every 6-12 months.

Yes, you can go through airport security with this device.

You should be able to return to your usual activities within a week. You can go back to regular exercise.

Implantation of Leadless Pacemakers