Bed RestHospital Bed CapacityBed OccupancyHospital PlanningBedsHead-Down TiltWeightlessness SimulationWeightlessness CountermeasuresRestSocialismCardiovascular DeconditioningHospitals, GeneralCertificate of NeedProgressive Patient CareLength of StayHospital RestructuringHospitals, PsychiatricHospitals, DistrictDemocracyPatient AdmissionHospitals, PrivateSpace FlightHospital Bed Capacity, 100 to 299Financial Management, HospitalEquipment and Supplies, HospitalHospital Bed Capacity, under 100Economics, HospitalHospitalsHospital CostsHospitalizationHealth Facility SizeHospital Shared ServicesWeightlessnessHospitals, TeachingPatient DischargeHospital Bed Capacity, 300 to 499Hospitals, UniversityHospitals, PublicCatchment Area (Health)Hospitals, CommunityOrthostatic IntoleranceHealth ResourcesHospital Bed Capacity, 500 and overTime FactorsEmergency Service, HospitalUtilization ReviewRetrospective StudiesDiagnosis-Related GroupsLower Body Negative PressureHospitals, UrbanNursing Staff, HospitalEnglandHospitals, PediatricUnited StatesHospitals, SpecialPatient ReadmissionHealth ExpendituresRisk FactorsHealth Services Needs and DemandDelivery of Health CareHealth Services ResearchHospital ChargesProspective StudiesHospital DepartmentsState MedicineEfficiency, OrganizationalAge FactorsHospital UnitsEarly AmbulationHealth Services AccessibilitySupine PositionMuscular AtrophyExercisePlasma VolumeHospital RecordsMuscle, SkeletalGreat BritainHypotension, OrthostaticModels, TheoreticalFollow-Up StudiesLibraries, HospitalHypovolemiaSurgery Department, HospitalOutpatient Clinics, HospitalInfant, NewbornImmobilizationHospitals, CountyRisk AssessmentVascular CapacitanceAmino Acids, EssentialCross InfectionSpinal Puncture