For MCDA twin pregnancies (1) between 32 weeks and 38 weeks; (2) between 1500 and 4000 grams and (3) twin A is in cephalic presentation, planned ...COVID-19AlertsOB2TUSAtlasTheGenomeGYNGYNSexualHealthPrimaryCareYourPracticeGrandRoundsMyBookshelfNow@ObGMediaAboutUsContactUsLoginObGFirstTogglenavigationCOVID-19AlertsOB2TUSAtlasTheGenomeGYNGYNSexualHealthPrimaryCareYourPracticeGrandRoundsMyBookshelfNow@ObGMediaGrandRoundsTwinBirthStudy:IsThereanOptimalDeliveryMethodforMonochorionic-DiamnioticTwins?BACKGROUNDANDPURPOSE:Studiesinvestigatingtheoptimalmodeofdeliveryformonochorionic-diamniotictwinsaremostlysmall,retrospective,observationalstudiesAvirametal.(AJOG,2020)comparedperinatalandmaternaloutcomesofplannedcesareandeliveryandplannedvaginaldeliveryofmonochorionic-diamniotictwinsusingtheTwinBirthStudydataMETHODS:SecondaryanalysisoftheTwinBirthStudyTwinBirthStudy:RCTthatincludeddichorionic-diamniotic(DCDA)andmonochorionic-diamniotic(MCDA)twinsfrom32w0dto38w6dParticipantdatausedforthissecondaryanalysisMCDAtwinpregnancies|TwinAwasincephalicpresentation|Eachtwinhadanestimatedweightbetween1500and4000gramsInterventionPlannedcesareanPlannedvaginaldeliveryStudydesignElectivedeliveryplannedbetween37weeksand5to7daysofgestationand38weeksand6to7daysofgestationComparisonsinmaternalandperinataloutcomesweremadebetweenThetwointerventiongroupsMCDAandDCDAtwinpregnanciesRESULTS:CurrentsecondarystudyPlannedcesarean:346womenPlannedvaginaldelivery:324womenRateofcesareandeliveryPlannedvaginaldelivery:39.2%Plannedcesareandelivery:91.3%Therewasnosignificantdifferenceingestationalageatdeliverybetweenthegroups(P=0.78)Vaginal:34.4weeksCesarean:34.5weeksTherewasnodifferenceinmaternaloutcomesbetweenthetwointerventiongroupsTherateofadverseneonatalcompositeoutcomesintwinsAortwinsBwassimilarinbothinterventiongroupsTwinsA:1.2%vs1.2%(P=0.92)TwinsB:1.2%vs3.2%(P=0.09)Intheplannedcesareangroup,therateofadverseneonatalcompositeoutcomewashigherintwinsBthantwinsA(P=0.03)TwinsA:1.2%TwinsB:3.2%WhencomparingMCDApr