Mechano-arrhythmogenicity is enhanced during late repolarisation in ischemia and driven by a TRPA1-, calcium-, and reactive oxygen species-dependent mechanism
Abstract:BackgroundCardiac dyskinesis in regional ischemia results in arrhythmias through mechanically-induced changes in electrophysiology (‘mechano-arrhythmogenicity’) that involve ischemic alterations in voltage-calcium (Ca2+) dynamics, creating a vulnerable period (VP) in late repolarisation.ObjectiveTo determine cellular mechanisms of mechano-arrhythmogenicity in ischemia and define the importance of the VP.Methods and ResultsVoltage-Ca2+ dynamics were simultaneously monitored in rabbit ventricular myocytes by dua… Show more
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