Emergency Medical ServicesHeart ArrestEmergency Medical TechniciansAmbulancesTransportation of PatientsMyocytes, CardiacAdvanced Cardiac Life SupportAllied Health PersonnelCardiac OutputOut-of-Hospital Cardiac ArrestHeartCardiopulmonary ResuscitationResuscitationWounds and InjuriesArrhythmias, CardiacTriageCardiac Surgical ProceduresTime FactorsMyocardial InfarctionDeath, Sudden, CardiacEmergency MedicineThrombolytic TherapyElectrocardiographyEvidence-Based Emergency MedicineEmergency TreatmentFirst AidInjury Severity ScoreAir AmbulancesIntubation, IntratrachealPatient TransferEmergency Medical Service Communication SystemsMultiple TraumaTrauma CentersProspective StudiesEmergency NursingCardiomegalyCardiac TamponadeCardiac Pacing, ArtificialEmergency Service, HospitalHeart DiseasesTreatment OutcomeTrauma Severity IndicesMyocardiumCardiac CatheterizationCapnographyLife Support CareMyocardial ContractionShock, TraumaticTime-to-TreatmentHeart VentriclesAnistreplaseTraumatologyRetrospective StudiesFluid TherapyMyoblasts, CardiacHeart FailureCardiomyopathiesAirway ManagementCardiac MyosinsCardiac Imaging TechniquesEmergenciesCardiac GlycosidesHeart RateDefibrillatorsStrokeEchocardiographyBerlinCardiac Output, LowCharcoalChemical WarfareSodium BicarbonateHemodynamicsSorption DetoxificationCardiac VolumeThoracic InjuriesVentricular RemodelingHeart TransplantationHospitalizationTroponin IHospital MortalityDisaster PlanningMyocardial ReperfusionFibrinolytic AgentsVentricular Function, LeftNalbuphineVentricular FibrillationMass Casualty IncidentsResuscitation OrdersIsotonic SolutionsCoronary Care UnitsClinical ProtocolsHeart Defects, CongenitalClioquinolHypothermia, InducedAdvanced Trauma Life Support CareStroke VolumeImmobilizationBlood PressureCardiac Resynchronization TherapyHeart Function Tests