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The classic essential text on anatomy...

Pacemakers

Pacemaker Information

Ahmed Bilal Thursday 1st January 1970

Pacemakers are battery-powered devices that function to electrically stimulate the heart to contract and thus to pump blood throughout the body. It consists of two parts the generator and the leads. The generators weigh less than 30 grams and the battery can last anywhere from 7-8 years on average and is replaced when necessary. Pacemakers are usually implanted in patients in whom the heart's own "spark plug" or electrical system is no longer functioning normally.

The sinoatrial (SA) node, l…

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