Maternal-Fetal Medicine — Flashcards

Flashcard 91: During pregnancy, a woman on _____ should be switched to heparin as soon as pregnancy is diagnosed and continued till 12 weeks.

Answer: warfarin

Flashcard 92: If division of the embryo occurs within _____ days of fertilization (morula stage), it results in dichorionic diamniotic (DCDA) twins.

Answer: 3

Extra: Timing of Monozygotic Twinning: - **0-3 days**: Dichorionic Diamniotic (DCDA) - division at morula stage. - **4-8 days**: Monochorionic Diamniotic (MCDA) - division of inner cell mass. - **8-13 days**: Monochorionic Monoamniotic (MCMA) - division of embryonic disc. - **>13 days**: Conjoined twins.

Flashcard 93: Protocol for Rh isoimmunization:If the husbands blood group is _____, do ICT

Answer: positive

Flashcard 94: Gestational sac in the adnexa with a hyperechoic ring on USG, also known as _____ sign is seen in tubal ectopic

Answer: Bagel

Flashcard 95: _____ pregnancies rupture at a later stage (and why?)

Answer: Interstitial

Flashcard 96: A _____ hydatidiform mole most commonly consists of 1 sperm that duplicates within an enucleated egg (85%, karytype 46, XX)

Answer: complete

Flashcard 97: Presence of a gas shadow within the _____, in cases of foetal death in utero, is also known as Robert's sign

Answer: chambers of the heart or the greater vessels like aorta

Flashcard 98: Fetus is most vulnerable to deterministic effects of radiation between the _____ and 20th week of gestation

Answer: 2nd

Flashcard 99: A woman with HIV infection on ART _____ withhold breastfeeding and can give EBM

Answer: should not

Flashcard 100: A cervical length less than _____ mm or funneling of more than 25% or both is associated with an increased risk of preterm delivery

Answer: 25