Early afterdepolarizations and cardiac arrhythmias.
Early afterdepolarizations and cardiac arrhythmias.
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DOI:
10.1016/j.hrthm.2010.09.017
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发表时间:
2010-12
期刊:
影响因子:
5.5
通讯作者:
Qu, Zhilin
中科院分区:
文献类型:
--
作者:
Weiss, James N.;Garfinkel, Alan;Karagueuzian, Hrayr S.;Chen, Peng-Sheng;Qu, Zhilin
关键词:
Early afterdepolarizations (EADs) are an important cause of lethal ventricular arrhythmias in long QT syndromes and heart failure, but the mechanisms by which EADs at the cellular scale cause arrhythmias such as polymorphic ventricular tachycardia (PVT) and Torsades de Pointes (TdP) at the tissue scale are not well-understood. Here we summarize recent progress in this area, discussing i) the ionic basis of EADs, ii) evidence that deterministic chaos underlies the irregular behavior of EADs, iii) mechanisms by which chaotic EADs synchronize in large numbers of coupled cells in tissue to overcome the source-sink mismatches, v) how this synchronization process allows EADs to initiate triggers and generate mixed focal-reentrant ventricular arrhythmias underlying PVT and TdP, and vi) therapeutic implications.
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影响因子:
5.5
作者:
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通讯作者:
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DOI:
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