HeartPainHeart RateChronic PainPain ManagementPain ThresholdPain, PostoperativeLow Back PainBack PainHeart FailurePain MeasurementAbdominal PainNeck PainPain, IntractableHeart DiseasesPelvic PainPain PerceptionHeart TransplantationHeart Defects, CongenitalFacial PainAcute PainPain, ReferredFetal HeartShoulder PainMusculoskeletal PainHeart ValvesHeart AtriaHeart BlockChronic DiseaseAnalgesicsMyocardiumNociceptive PainNeuralgiaTime FactorsTreatment OutcomeHeart Arrest, InducedHeart Function TestsMyocardial ContractionMyocardial IschemiaAnalgesics, OpioidProspective StudiesMyocytes, CardiacCoronary DiseaseMyofascial Pain SyndromesHyperalgesiaHemodynamicsFollow-Up StudiesRisk FactorsComplex Regional Pain SyndromesVisceral PainMyocardial InfarctionCardiac Output, LowVentricular Function, LeftArthralgiaRats, Sprague-DawleyAnalgesiaDouble-Blind MethodSeverity of Illness IndexLabor PainPerfusionHeart, ArtificialHeart Failure, SystolicCardiomegalyCardiomyopathy, DilatedQuestionnairesDisease Models, AnimalEchocardiographyHeart InjuriesHeart Rate, FetalCardiotonic AgentsHeart SeptumStroke VolumeRheumatic Heart DiseaseCardiomyopathiesHeart ArrestMyocardial Reperfusion InjuryNociceptorsRetrospective StudiesHeart Valve ProsthesisAnesthetics, LocalVentricular Dysfunction, LeftAdrenergic beta-AntagonistsHeart Failure, DiastolicDogsAmerican Heart AssociationFibromyalgiaVentricular RemodelingExercise TestDisability EvaluationRats, WistarCohort StudiesPredictive Value of TestsCatastrophizationAutonomic Nervous SystemOxygen ConsumptionFlank PainQuality of LifeHeart NeoplasmsDose-Response Relationship, DrugCardiac Pacing, Artificial