Myocytes, CardiacMyocardiumHeartCardiac OutputTroponin IArrhythmias, CardiacCardiac MyosinsCardiac Surgical ProceduresCardiomegalyDeath, Sudden, CardiacMyocardial ContractionHeart VentriclesNAV1.5 Voltage-Gated Sodium ChannelTroponinHeart TransplantationTroponin CTroponin TSodium ChannelsHeart DiseasesKv1.5 Potassium ChannelHeart AtriaCardiomyopathiesPotassium Channels, Voltage-GatedHeart FailureMyosinsConnectinFetal HeartCardiac TamponadeCells, CulturedCardiac Pacing, ArtificialCalciumCardiomyopathy, HypertrophicCardiac CatheterizationVentricular MyosinsTime FactorsEther-A-Go-Go Potassium ChannelsCardiomyopathy, DilatedPatch-Clamp TechniquesElectrocardiographyModels, CardiovascularCardiomyopathy, Hypertrophic, FamilialMuscle ProteinsLong QT SyndromeHeart ArrestSarcomeresMyofibrilsPotassium ChannelsHeart RateMyocardial InfarctionHeart ValvesMolecular Sequence DataHeart Conduction SystemKCNQ1 Potassium ChannelMyoblasts, CardiacPotassium Channel BlockersMyocardial IschemiaLoratadineMyocarditisCardiac Imaging TechniquesCalcium Channels, L-TypeCardiotonic AgentsActinsMuscle CellsFibrosisCardiac GlycosidesMembrane PotentialsElectrophysiologyAmino Acid SequenceFibroblastsEchocardiographyRabbitsRNA, MessengerCardiac Output, LowDogsTropomyosinOut-of-Hospital Cardiac ArrestIon Channel GatingHemodynamicsQuinidineVentricular FunctionMutationCardiac VolumeVentricular RemodelingAnti-Arrhythmia AgentsEndocardiumCoronary VesselsMyosin Heavy ChainsDose-Response Relationship, DrugVentricular Function, LeftDisease Models, AnimalIsoproterenolMice, TransgenicMyosin Light ChainsAction PotentialsGene ExpressionAtrial FunctionGene Expression RegulationMyosin SubfragmentsHeart Defects, CongenitalSodium Channel Blockers