Notes in OG3.8 Multiple Gestation

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Published	10/04/2024	Most twins are between {{c1::mono}}chorionic and {{c1::di}}amniotic
Published	10/04/2024	Most optimal time to establish chorionicity of multiple gestation is between {{c1::8 - 11}} weeks
Published	10/04/2024	Twin peak sign: {{c1::Placental tissue is visible in the base of the dividing membrane}} → {{c2::di}}chorionic
Published	10/04/2024	If unsure of chorionicity, treat as {{c1::mono}}chorionic
Published	10/04/2024	T/F There is no role for elective cervical cerclage, inpatient bed rest or prophylactic tocolysis in multiple gestation to stop premature labour.{{c1:…
Published	10/04/2024	{{c1::Aspirin::RX}} may reduce risk of preclampsia in multipes
Published	10/04/2024	All dichorionic twins should have scans every {{c1::4}} weeks to evaluate fetal growth
Published	10/04/2024	All monochorionic twins should have scans every {{c1::2}} weeks to evaluate fetal growth
Published	10/04/2024	Deliver dichorionic twins by {{c1::38 - 39}} weeks
Published	10/04/2024	Deliver all monochorionic twins by {{c1::36-37}} weeks
Published	10/04/2024	Deliver all triplets by {{c1::33 - 34}} weeks
Published	10/04/2024	CTG is {{c1::manadatory}} for both fetuses during delivery
Published	10/04/2024	Most common twin presentation is {{c1::vertex - vertex}}
Published	10/04/2024	Deliver vertex vertex twins by {{c1::vaginal}}
Published	10/04/2024	What happens after vaginal delivery of twin A?{{c1::ultrasound to confirm presentation of twin B}}
Published	10/04/2024	Breechvertex twins are delivered {{c1::c-section}}
Published	10/04/2024	Twin twin transfusion syndrome becomes apparents at about {{c1::18 - 24}} weeks
Published	10/04/2024	Most pregnancies with twin twin transfusion syndrome end in {{c1::miscarriage}} or {{c1::severe preterm delivery}}
Published	10/04/2024	Diagnosis of twin twin transfusion syndrome has 4 supporting factors:- {{c1::monochorionic twin pregnancy}}- {{c1::oligohydramnios/poly…
Published	10/04/2024	Therapeutic options for twin twin transfusion syndrome:- {{c1::Reduction amniocentesis}}- {{c1::Laser ablation}}
Published	10/04/2024	{{c1::Reduction amniocentesis::therapy for twin twin transfusion syndrome}} does not prevent neurologic sequelae if one twin dies
Published	10/04/2024	Neurological sequelae in twin twin transfusion syndrome if one twin dies occurs due to {{c1::sudden flow of blood from remaining live fetus …
Published	10/04/2024	{{c1::Amniotic fluid reduction}} is performed at the same time as laser ablation in twin twin transfusion syndrome
Published	10/04/2024	{{c1::Laser ablation::Laser ablation/reduction amniocentesis}} is better for twin twin transfusion syndrome than {{c1::reduction amniocentes…
Published	10/04/2024	Monoamniotic twins should be {{c1::hospitalized::management}}
Published	10/04/2024	If CTG is not reassuring in monoamniotic twins → {{c1::deliver::management}}
Published	10/04/2024	{{c1::3}}% of births are multiple gestation
Published	10/04/2024	If split at day 3 -> {{c1::dichorionic::chorionicity, amnionicity}} twins
Published	10/04/2024	If split at days 4-8 -> {{c1::monochorionic, diamniotic::chorionicity, amnionicity}} twins
Published	10/04/2024	If split at day 9-12 -> {{c1::monochorionic, monoamniotic::chorionicity, amnionicity}} twins
Published	10/04/2024	If split at day 12+ -> {{c1::conjoined::chorionicity, amnionicity}} twins
Published	10/04/2024	US every {{c1::2}} weeks from {{c1::16}} weeks if monochorionic twinsUS every {{c1::4}} weeks for dichorionic twins
Published	10/04/2024	If death of 1 fetus in monochorionic twins, risk of {{c1::flow of blood backwards from lie fetus into dead fetus}}can result in death or significant b…
Published	10/04/2024	In {{c1::20}}% of monochorionic twins, there's an unbalanced blood flow across {{c1::abnormal AV anastomoses}} whereby 1 fetus becomes the {{c1::donor…
Published	10/04/2024	Twin to twin transfusion syndrome usually diagnosed at {{c1::18-24::range}} weeks.If untreated, death in {{c1::90}}% of cases of 1 or both fetuses
Published	10/04/2024	fetoscopic laser ablation of AV anastomses is successful in {{c1::75}}% of cases of twin to twin transfusion syndrome
Published	10/04/2024	Selective fetal growth restriction in monochorionic twins means there's a growth discrepancy  of > {{c1::18}}%
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