What is MCMA (also known as MoMo) ... MCMA or monochorionic-monoamniotic twins is a condition in which twin babies live in one sac and share one placenta.Weusecookiestohelpourwebsiteworkproperlyandtoprovideyouwithapersonalizeduserexperience.Ifyoucontinuewithoutchangingyoursettings,we’llassumethatyouacceptallcookiesonourwebsite.However,youcanchangeyourcookiesettingsatanytime.FindoutmoreContinueChangecookiessettingsHomeHealthArticlesMonochorionic-Monoamniotic(MCMA)TwinsBacktoHomeMonochorionic-Monoamniotic(MCMA)TwinsBoonsriChanrachakul,M.D.onMar21,20175minread0.0FertilityandPregnancyhighriskpregnancyPregnancymultiplepregnancyMosttwinpregnanciesareconsideredhigh-riskandtoensureasafeandhealthydelivery,itisimportantthatthepregnancyiscloselymonitoredbyexpertdoctors.Monochorionic-monoamniotictwinsisarareanddangerouspregnancyconditionthatcanleadtothelossofbothfetuses.Itisessentialthatcoupleswhowanttostartafamilylearnmoreaboutthisconditionbeforehand.WhatisMCMA(alsoknownasMoMo)MCMAormonochorionic-monoamniotictwinsisaconditioninwhichtwinbabiesliveinonesacandshareoneplacenta.MCMAisararecondition,affectingonlyonepercentofalltwinpregnancies.Duringanormaltwinpregnancy,divisionwilloccurduringthefirstfourdaysoflifeandthetwinswillhaveseparateplacentasandsacs.ButforMCMAtwins,thedivisionwilloccurduringthefirsteightdaysoflife.Thiswillresultinthetwinssharingthesamesacandplacenta.MCMAhappensnaturallyandhasnodefinedcauses.WhatarethecomplicationsofMCMA?MCMAcarriesthesamecomplicationsasnormaltwins;includingdiabetes,hypertensionanda50percentchanceofpretermlabor.However,themostseriousanduniquecomplicationisumbilicalcordentanglement.Sharingthesameplacentameansthatbothcordsareveryclosetotheplacenta,withadistanceofonlyaboutsixinches,makingiteasierforthecordstogettangled.Theentanglementpreventsbloodfromgoingtobothbabiesandwilleventuallyleadtothelossofbothinfants,ifleftuntreated.TherearenowarningsignsforMCMA;oncethecordsaretiedtogether,thelivesofbothbabiesareimmediatelyatrisk.DetectionandTreatmentFe