Multiple choice

In human beings, which of the following pregnancies carries the highest risk of adverse outcome?

  1. Singleton pregnancy

  2. Dichorionic diamniotic (DCDA) twins

  3. Monochorionic diamniotic (MCDA) twins

  4. Monochorionic monoamniotic (MCMA) twins

  5. Disappearing twin

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pregnancies that share the placenta and amnion are at the highest risk of adverse outcome because of risk of twin-to-twin transfusion syndrome and cord entanglement.