Heart Defects, CongenitalHypertrophyCardiomegalyTachycardiaTachycardia, VentricularHypertrophy, Left VentricularTachycardia, SupraventricularMyocytes, CardiacMyocardiumTachycardia, Atrioventricular Nodal ReentryTachycardia, ParoxysmalHeartTachycardia, SinusTachycardia, Ectopic AtrialElectrocardiographyHypertrophy, Right VentricularHeart VentriclesEchocardiographyCatheter AblationVentricular RemodelingArrhythmias, CardiacFibrosisBlood PressureOrgan SizeAtrial Natriuretic FactorCardiac Pacing, ArtificialTachycardia, Ectopic JunctionalMyocardial ContractionHeart Conduction SystemHeart RateHeart FailureCardiomyopathy, HypertrophicDisease Models, AnimalHypertensionCalcineurinAngiotensin IIRats, Sprague-DawleyPostural Orthostatic Tachycardia SyndromeElectrophysiologic Techniques, CardiacMice, TransgenicHemodynamicsDeath, Sudden, CardiacEndomyocardial FibrosisCardiomyopathiesCardiac OutputTachycardia, ReciprocatingIsoproterenolTachycardia, Sinoatrial Nodal ReentryAnti-Arrhythmia AgentsTime FactorsCell SizeSignal TransductionCell EnlargementVentricular Function, LeftMyosin Heavy ChainsRats, WistarRats, Inbred SHRCells, CulturedMice, KnockoutHeart AtriaAtrioventricular NodePhenylephrineCardiomegaly, Exercise-InducedVentricular PressureMice, Inbred C57BLAnimals, NewbornHeart DiseasesCardiac Surgical ProceduresRNA, MessengerCardiomyopathy, DilatedWolff-Parkinson-White SyndromeEndocardiumBundle of HisVentricular FibrillationBody Surface Potential MappingMuscle ProteinsVentricular Dysfunction, LeftConstrictionRats, Inbred WKYCardiotonic AgentsVentricular Function, RightBody WeightNFATC Transcription FactorsGene Expression RegulationHeart BlockCardiac CatheterizationDogsMyocardial InfarctionTreatment OutcomeVentricular Dysfunction, RightEndothelin-1DiastoleGATA4 Transcription FactorVentricular MyosinsStroke VolumeReceptors, Adrenergic, betaAntihypertensive AgentsDefibrillators, ImplantableAdrenergic beta-AgonistsCardiac Myosins