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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Twin to-twin transfusion syndromeAcog TTTSMultiple pregnancyMultifetal gestation acogpathophysiology of tttsttts definitionupdate on twin-to-twin transfusion syndrome