Postoperative PeriodPostoperative ComplicationsPreoperative CarePostoperative CarePain, PostoperativeTreatment OutcomeCardiac Surgical ProceduresIntraoperative PeriodProspective StudiesPain MeasurementFollow-Up StudiesTime FactorsRetrospective StudiesReoperationCoronary Artery BypassPreoperative PeriodLiver TransplantationCardiopulmonary BypassIntraoperative CarePerioperative PeriodIntraoperative ComplicationsPerioperative CareAnesthesia, GeneralSurgical Procedures, OperativeTomography, X-Ray ComputedSurgical Procedures, ElectiveAnalgesia, Patient-ControlledAnalgesics, OpioidSuture TechniquesPostoperative Nausea and VomitingLength of StayNeurosurgical ProceduresAnastomosis, SurgicalMonitoring, IntraoperativeRisk FactorsThoracotomyRectal NeoplasmsLaparoscopyAnesthesiaAmbulatory Surgical ProceduresSurgical FlapsAbdomenDigestive System Surgical ProceduresFentanylPredictive Value of TestsMorphineVascular Surgical ProceduresRecovery of FunctionPremedicationCardiovascular Surgical ProceduresCataract ExtractionPrognosisSurgical Wound InfectionSuturesCholecystectomy, LaparoscopicDrainageOsteotomyAnalgesia, EpiduralAirway ExtubationThoracic Surgical ProceduresBlood Vessel Prosthesis ImplantationBlood Loss, SurgicalTramadolOrthopedic ProceduresSternumHeart Valve Prosthesis ImplantationRisk AssessmentMitral ValveCombined Modality TherapyThoracic SurgeryPostoperative HemorrhageArthroplasty, Replacement, HipDouble-Blind MethodSurgical Procedures, Minimally InvasiveCholecystectomyLaparotomyReconstructive Surgical ProceduresArthroplasty, Replacement, KneeNeoadjuvant TherapyGynecologic Surgical ProceduresAnesthesia, ConductionAnesthesia Recovery PeriodIntestinal ObstructionSurgical InstrumentsSurvival RateUlnar ArteryEndoscopyEsophagectomyPneumonectomyPulmonary AtelectasisBupivacaineHerniorrhaphyNerve BlockStatistics, NonparametricMagnetic Resonance ImagingPancreaticoduodenectomySpinal FusionChi-Square DistributionPreanesthetic MedicationEndarterectomy, Carotid