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Atrioventricular Block

Atrioventricular (AV) block – first, second, third (complete) degree, – Symptoms

Atrioventricular (AV) block: Each heartbeat starts with the hearts pacemaker cells in the sinoatrial node, or sometimes just the SA node, in the right atrium. The SA node transmits an electrical signal that propagates out through the walls of the heart and contracts both upper chambers, then moves through the atrioventricular (or AV) node where...
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