Analgesia, EpiduralAnalgesia, ObstetricalAnalgesiaAnalgesia, Patient-ControlledAnesthesia, EpiduralBupivacaineLabor PainLabor, ObstetricAnalgesics, OpioidPain, PostoperativeAnesthetics, LocalAnesthesia, ObstetricalFentanylPain MeasurementSufentanilLabor Stage, FirstAmidesCesarean SectionPregnancyMeperidineObstetric Labor ComplicationsMorphineNerve BlockDelivery, ObstetricLabor Stage, SecondExtraction, ObstetricalThoracotomyPostoperative Nausea and VomitingDouble-Blind MethodAnesthesia, GeneralHydromorphoneApgar ScoreAnalgesicsHeart Rate, FetalUltrasonographyAnesthesia, SpinalProspective StudiesNalbuphineDystociaLidocaineUltrasonicsPuerperal DisordersUrinary RetentionPerineumMepivacaineUltrasonic TherapyInjections, SpinalParityLacerationsPainAcupuncture AnalgesiaFemoral NervePostoperative CareObstetrical ForcepsEpisiotomyHigh-Intensity Focused Ultrasound AblationAbdomenUltrasonography, InterventionalThoracic Surgical ProceduresHematoma, Epidural, SpinalPerioperative CareObstetrics and Gynecology Department, HospitalPruritusHypotensionPostoperative ComplicationsMicrobubblesFeverFetal MonitoringIleusSagittal Sinus ThrombosisCatheterizationInjections, IntravenousTreatment OutcomePostpartum PeriodOxytocinTime FactorsPregnancy OutcomeClonidineUltrasonography, PrenatalInfant, NewbornUterine ContractionDrug CombinationsDrug Administration ScheduleEpidural AbscessPatient SatisfactionRetrospective StudiesProcaineThoraxTransducersArthroplasty, Replacement, KneePostoperative PeriodBody TemperatureTramadol