antenatal care and screening

Question 1

examinations done at the booking visit

Answer 1

-height
-weight
-BP

Question 2

blood tests done at the booking visit

Answer 2

-Hb
-ABO; rhesus status and antibodies
-syphilis; HIV; Hep B B&C
-urinalysis

Question 3

what screening is offered at the booking visit

Answer 3

trisomy screening

Question 4

what happens at 20 weeks

Answer 4

Anomaly scan - cleft, heart, NTD, limb defects, placental site, diaphragmic hernia, abdominal wall defects, lungs abnormalities, brain abnormalities, urinary tract abnormalities

Question 5

what is screened at 28 weeks

Answer 5

-red cell antibodies
-anaemia

Question 6

what is naegele’s rule

Answer 6

• Predicts an estimated due date based on the onset of the woman’s last menstrual period
• Add 9 months and 7 days to arrive at the due date (280 days)

Question 7

what is placenta praevia

Answer 7

when the placenta is low lying in the uterus and covers all or part of the cervix
-in most women it moves out of the way eventually
-if low at anomaly scan it’s rechecked at 32 weeks
-sometimes a transvaginal can is needed

Question 8

what trisomy’s can be tested for

Answer 8

down’s syndrome - T21
edward’s syndrome - T18
Patau’s syndrome - T13

Question 9

when can all three be tested for

Answer 9

first trimester

Question 10

how is trisomy risk assessment done in first trimester

Answer 10

USS with hCG and PAPP-A
-skin thickness behind fetal neck measured using USS

Question 11

how is trisomy assessment done in second trimester

Answer 11

blood sample at 15-20 weeks + maternal age
-AFP, hCG, UE3, inhibin A