Afterdepolarizations are abnormal depolarizations of cardiac myocytes that interrupt phase 2, phase 3, or phase 4 of the cardiac action potential in the electrical conduction system of the heart. Afterdepolarizations may lead to cardiac arrhythmias. == Early afterdepolarizations == Early afterdepolarizations (EADs) occur with abnormal depolarizati...
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http://en.wikipedia.org/wiki/Afterdepolarization
(af″tәr-de-po″lәr-ĭ-za´shәn) an oscillation in membrane potential that is dependent upon a preceding action potential for its initiation, and which upon reaching threshold potential can induce arrhythmias that are said to be “triggered.” Early afterdepolarizations occur during ph...
Found on
http://www.encyclo.co.uk/local/21001
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