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Technology

Home-grown circuit to set the pace for faulty hearts

By Paul Marks

21 June 2006

A “wire” made from a patient’s own cells could one day be used to keep electrical impulses flowing in the heart. It may even mean people will no longer have to be fitted with pacemakers.

A normal heart has an efficient electrical circuit that sychronises the beats of the atria and ventricles – the chambers of the heart – so that they pump blood effectively. Impulses are produced by the heart’s natural pacemaker, a cluster of cells called the sino-atrial node, situated in the right atrium. These are then relayed to the ventricles via the atrioventricular (AV) node.

In some people the…

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