faulty pacemaker Flashcards
1
Q
describe the heart’s natural pacemaker
A
the SA node, also known as the heart’s natural pacemaker, is a small bundle of specialised cells in the right atrium. the electrical activity spreads through the walls of the atrium and causes them to contract. this forces blood into the ventricles.
2
Q
what can be done if the SA node stops working?
A
a mechanical pacemaker can be provided. this is a device run by a battery that helps the heart beat regularly
3
Q
are there any disadvantages to this?
A
infection, swelling, bruising or bleeding, blood clots, damage to nerves or blood vessels, a collapsed lung all happening near the site of the device
