Restitution analysis of alternans and its relationship to arrhythmogenicity in hypokalaemic Langendorff-perfused murine hearts
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چکیده
منابع مشابه
Restitution analysis of alternans using dynamic pacing and its comparison with S1S2 restitution in heptanol-treated, hypokalaemic Langendorff-perfused mouse hearts
Action potential duration (APD) and conduction velocity restitution explain the dependence of these parameters on the previous diastolic interval (DI). It is considered to be an adaptive mechanism for preserving diastole at fast heart rates. Hypokalaemia is known to induce ventricular arrhythmias that could be prevented by heptanol, the gap junction uncoupler, mediated through increases in vent...
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The relationship between alternans and arrhythmogenicity was studied in genetically modified murine hearts modeling catecholaminergic polymorphic ventricular tachycardia (CPVT) during Langendorff perfusion, before and after treatment with catecholamines and a β-adrenergic antagonist. Heterozygous (RyR2(p/s)) and homozygous (RyR2(s/s)) RyR2-P2328S hearts, and wild-type (WT) controls, were studie...
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ژورنال
عنوان ژورنال: Pflügers Archiv - European Journal of Physiology
سال: 2007
ISSN: 0031-6768,1432-2013
DOI: 10.1007/s00424-007-0327-y