Week 10: Multiple Pregnancies Flashcards
ID the chorionicity and amnionicity of these twins
Dichorionic and Diamniotic
ID the zygosity of these twins
Monozygotic or Dizygotic
What is the approximate time of separation if monozygotic?
1-3 days post fertilization
ID the chorionicity and amnionicity of these twins
Monochorionic and Monoamniotic
ID the zygosity of these twins
Monozygotic only
What is the approximate time of separation?
8-13 days post fertilization
What is the 2 main risks of monoamniotic twins
- Cord Entanglement
- Conjoined Twins
ID the chorionicity and amnionicity of these twins
Monochorionic and Diamniotic
ID the zygosity of these twins
Monozygotic only
What is the approximate time of separation?
4-8 days post fertilization
What is the 2 main risks of monochorionic twins
- Twin-Twin Transfusion Syndrome
- Twin Reversed Arterial Perfusion (TRAP) sequence - to an acardiac twin
ID the chorionicity and amnionicity of these twins
Dichorionic and Diamniotic
ID the zygosity of these twins
Monozygotic or Dizygotic
What is the approximate time of separation?
1-3 days post fertilization
Vessels from one twin (recipient) pull blood from the other twin (donor)
Twin-Twin Transfusion Syndrome
what can Twin-Twin Transfusion Syndrome result in
non-immune Hydrops - essential fluid retention that is often fatal (pleural/pericardial/ascites/amniotic/subQ, etc)
Twin reversed arterial perfusion sequence (a rare variant of TTTS)
Acardiac twins
ID the chorionicity and amnionicity of these twins
Monochorionic and Diamniotic
ID the chorionicity and amnionicity of these twins
Dichorionic and Diamniotic
ID the chorionicity and amnionicity of these twins
Monochorionic and Diamniotic
ID the chorionicity and amnionicity of these twins
Monochorionic and Monoamniotic
