Openaccesspeer-reviewedchapterTimeandModeofDeliveryinTwinPregnanciesByEduardoFélixMartinsSantana,VivianMeloCorrêa,IsabelaBotturaandJoséPedroPariseFilhoSubmitted:March21st2018Reviewed:July10th2018Published:December31st2018DOI:10.5772/intechopen.80092Home>Books>MultiplePregnancy-NewChallengesAdvertisementDownloaded:1224AdvertisementAbstractTherearemanysuitablerecommendationsfortwingestationtermintheliterature.Inmanyprotocols,resolutionisrecommendedfordichorionicpregnanciesaround38 weeks,at36 weeksformonochorionic(devoidofcomplications)andat32–34 weeksincasesofsingleamnioticchamber.Themainriskassociatedwithvaginaldeliveryisconnectedtothepossibilityofanoxiaofthesecondtwin.However,acesareandeliveryperformedbynon-cephalicpresentationofthesecondtwinisassociatedwithincreasedmaternalmorbiditywithoutimprovedneonataloutcome.Themostimportantfactorsinthedecisionofthedeliverymodeincludethepresentationofthefetus,gestationalage,andweightortheweightdifferencebetweenthefetuses.KeywordstwinpregnancydeliverylaborchapterandauthorinfoAuthorsEduardoFélixMartinsSantana*DepartmentofObstetrics,PaulistaSchoolofMedicine,FederalUniversityofSãoPaulo(EPM-UNIFESP),BrazilDepartmentofPerinatology,AlbertEinsteinHospital,BrazilVivianMeloCorrêaDepartmentofObstetrics,PaulistaSchoolofMedicine,FederalUniversityofSãoPaulo(EPM-UNIFESP),BrazilIsabelaBotturaDepartmentofPerinatology,AlbertEinsteinHospital,BrazilJoséPedroPariseFilhoDepartmentofPerinatology,AlbertEinsteinHospital,Brazil*Addressallcorrespondenceto:[email protected]:10.5772/intechopen.80092FromtheEditedVolumeIntechOpenMultiplePregnancyNewChallengesEditedbyJulioElitoJr.MultiplePregnancy-NewChallengesEditedbyJulioElitoJr.Show+1.IntroductionItisknownthatmultiplepregnancypresentsmorbidityandmortalityratesabout3–7timesgreaterthansinglepregnancies,andtheseareoftendeterminedindeliverycare[1].Amongthedifficultiesintwinbirth,wehighlight:prematurity,non-cephalicpresentations,dystocia,funicularprolapse,placentalabruption,increasedoperativeincidence,po