16: SAB, Ectopics, Rh Isoimmunization

Question 1

what % of women will have vaginal bleeding during early pregnancy (implantation bleeding)

Answer 1

40%

Question 2

abnormal rise in hCG less than 53% in 48 hrs means what?

Answer 2

abnormal IUP or ectopic

Question 3

biochemical pregnancy

Answer 3

presence of hCG 7-10 days after ovulation but menstruation still occurs as expected

Question 4

at 8 weeks gestation, what is seen on US that gives the risk of fetal loss only 2%

Answer 4

live appropriately growing fetus + cardiac activity

Question 5

abortus

Answer 5

fetus lost beore 20 weeks gestation

Question 6

___% of SABs occur during first trimestr

Answer 6

80%

Question 7

MC cause of first trimester SABs

Answer 7

chromosome abnormalities

Question 8

severe fetal anemia in Rh isoimmu: definition and how to manage

Answer 8

1. Hct < 30%

2. manage w intrauterine transfusion between 18-35 weeks with fresh group O negative packed RBCs

Question 9

ideal time to deliver an ifant with isoimmunization

Answer 9

35 weeks

Question 10

Timing for 1st 2nd and 3rd trimester

Answer 10

First is till 13+6, second is till 27+6, third is 28+