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In the present pharmacologic model of short QT syndrome treatment with pinacidil led to an increased inducibility of VF in association with a reduction in ERP. Additional treatment with ranolazine or vernakalant reversed this effect and demonstrated potent antiarrhythmic properties based on an increase of ERP.

There was no clinical overt cognitive deficit and no significant difference in cognitive function correlating with the used ablation technique. The number of MES correlated with a subtle, diffuse post-procedural impairment of neuropsychological function highlighting the need to reduce microemboli during ablation.

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