Pregnancy and Birth

Question 1

How is BMI calculated

Answer 1

Weight in Kg divided by height in meters squared

Question 2

In rhesus of the newborn what is the ratio of chest compressions to breath

Answer 2

Three compressions to one breath

Question 3

When should combined screening be undertaken

Answer 3

11+0 to 13+6

Question 4

When should triple/quadruple test be undertaken

Answer 4

15 - 20 weeks

Question 5

Nuchal translucency

Answer 5

10-14 weeks

Usually disappears by 15 weeks

Question 6

How many antenatal appointments for a nulliparous

Answer 6

10

Question 7

How many antenatal appointments for a multiparous

Answer 7

7

Question 8

When should a booking appointment take place

Answer 8

10 weeks (8-12)

Question 9

AFP would show as:

Answer 9

Alpha feto protein

AFP results usually reduced by 25% at 16/40 in the presence of downs syndrome

Question 10

Chorionic Villus Sampling

Answer 10

Removes cells from chorion before 12/40 under ultrasound

0.5-2% risk of misscarriage

Question 11

Amniocentesis

Answer 11

Extracts cells from amniotic fluid

Question 12

Soft markers for chromosomal abnormalities

Answer 12

• choroid plexus cyst in brain(can come and go)
• echogenic bowel
• nuchal fold >5mm at 20/40
• echogenic foci in the heart
• dilated renal pelvis >5mm
• short femur
• talipes
• sandal gap