Papillary MusclesHeart RuptureHeart Rupture, Post-InfarctionMyocardial InfarctionMitral Valve InsufficiencyRupture, SpontaneousRadionuclide VentriculographyRuptureMusclesEchocardiography, TransesophagealCardiomyopathiesHeart Valve Prosthesis ImplantationMyocardial ContractionCoronary AngiographyPectoralis MusclesMuscle ProteinsChordae TendineaeMuscle, SmoothElectrocardiographyMuscle, SkeletalInfarctionTime FactorsMuscle ContractionMuscle Fibers, SkeletalMyocardiumHeartMuscle, Smooth, VascularGuinea PigsHeart VentriclesMitral ValveMuscle DevelopmentFerretsCerebral InfarctionTreatment OutcomeAngioplasty, Balloon, CoronaryAnterior Wall Myocardial InfarctionVentricular RemodelingThrombolytic TherapyAortic RuptureSplenic RuptureAction PotentialsEchocardiographyRetrospective StudiesVentricular Function, LeftRisk FactorsMuscle FatigueCreatine KinaseMuscle Fibers, Fast-TwitchMyocardial ReperfusionMuscle DenervationProspective StudiesIsometric ContractionMyocardial IschemiaRabbitsMuscle Fibers, Slow-TwitchAequorinCalciumCineradiographyMyocytes, Smooth MuscleCoronary VesselsDogsCoronary DiseaseFollow-Up StudiesMuscle RelaxationMitochondria, MuscleElectric StimulationStreptokinaseUterine RuptureRats, WistarShock, CardiogenicCardiotonic AgentsVentricular Dysfunction, LeftCoronary CirculationVentricular FunctionNeck MusclesOculomotor MusclesPredictive Value of TestsDepression, ChemicalStroke VolumeIsoproterenolMuscle, StriatedCatsCoronary Care UnitsMuscle SpindlesEndocardiumPrognosisPurkinje FibersFibrinolytic AgentsHeart FailureAnti-Arrhythmia AgentsRespiratory MusclesMuscle WeaknessMitral Valve AnnuloplastyHeart Conduction SystemStentsAngina PectorisAcute DiseaseMuscle CellsMyofibrilsPlatelet Aggregation Inhibitors