Multiple Pregnancy | Acog TTTS

In TTTS, the blood flow between the twins becomes unbalanced. One twin donates blood to the other twin. The donor twin has too little blood, and the recipient ...HealthyLivingScreening&PreventionSexualHealth&RelationshipsBirthControlHealthyTeensHealthyAgingPregnancyGettingPregnantDuringPregnancyLaborandDeliveryAfterPregnancyPregnancyBookTopicsA-ZTopicsA-ZCOVID-19CancerMentalHealthPrenatalTestingMenopauseMenstrualHealthHeartHealthVaccinesSpecialProceduresDiseasesandConditionsBrowseAllTopicsViewAllFrequentlyAskedQuestionsExperts&StoriesTheLatestAskACOGMenuFAQsMultiplePregnancyShareFacebookTwitterEmailLinkURLhasbeencopiedtotheclipboardClosePrintFrequentlyAskedQuestionsExpandAllWhatisamultiplepregnancy?Apregnancywithmorethanonefetus iscalledamultiplepregnancy.Howdoesmultiplepregnancyhappen?Ifmorethanoneegg isreleasedduringthemenstrualcycle andeacheggisfertilizedbyasperm,morethanoneembryomayimplantandgrowintheuterus.Thistypeofpregnancyresultsinfraternaltwins (ormore).Whenasinglefertilizedeggsplits,itresultsinmultipleidenticalembryos.Thistypeofpregnancyresultsinidenticaltwins(ormore).Fraternaltwinsaremorecommonthanidenticaltwins.Whataresomecausesofmultiplepregnancy?Theuseoffertilitydrugstoinduceovulationoftencausesmorethanoneeggtobereleasedfromtheovariesandcanresultintwins,triplets,ormore.Invitrofertilization(IVF)canleadtoamultiplepregnancyifmorethanoneembryoistransferredtotheuterus.Identicalmultiplesalsomayresultifthefertilizedeggsplitsaftertransfer.Womenolderthanage35aremorelikelytoreleasetwoormoreeggsduringasinglemenstrualcyclethanyoungerwomen.Soolderwomenaremorelikelythanyoungerwomentobecomepregnantwithmultiples.Whataresomesymptomsofmultiplepregnancy?Womenwhoarepregnantwithmultiplesmayhavemoreseveremorningsicknessorbreasttendernessthanwomenwhoarepregnantwithasinglefetus.Theyalsomaygainweightmorequickly.Mostmultiplepregnanciesarediscoveredduringanultrasoundexam.DoIneedtogainextraweightifIampregnantwithmultiples?Most womenwhoarepregnantwithmultiplesneedtogainmoreweightt


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