Pacemaker implantation is a surgical procedure where a small electrical device called a pacemaker is implanted in your chest. The pacemaker sends regular electrical pulses that help keep your heart beating regularly.
Having a pacemaker fitted can greatly improve your quality of life if you have problems with your heart rhythm, and the device can be lifesaving for some people.
The pacemaker is a small metal box weighing 20-50g. It is attached to one or more wires, known as pacing leads, which run to your heart.
The pacemaker contains:
A battery, which usually lasts six to 10 years depending on how advanced the device is (more advanced pacemakers tend to use more energy so have a shorter battery life)
A pulse generator
A tiny computer circuit that converts energy from the battery into electrical impulses, which flow down the wires and stimulate your heart to contract
The rate at which these electrical impulses are sent out is called the discharge rate.