Numbers quiz

Question 1

Cephalohematoma in istrumental deliveries?

Answer 1

1-12%
(up to around 10%)

Question 2

Facial/scalp lacerations in instrumental deliveries?

Answer 2

10%

Question 3

How many UK births have instrumentals?

Answer 3

15%

Question 4

How many ventouse have episiotomies? And forceps?

Answer 4

Ventouse: 50-60%
Forceps: >90%

Question 5

How many ventouse and forceps have significant vaginal tears?

Answer 5

Ventouse 10%
Forceps 20%

Question 6

What is the prevalence of OASI with ventouse and forceps?

Answer 6

Ventouse: 1-4% (less than 5%)
Forceps: 8-12%

Question 7

What is the incidence of OASI in the UK?

Answer 7

3%

Question 8

What is the incidence of OASI in
a) overall
b) primips
c) multips

Answer 8

a) 3%
b) 6%
c) 2%

Question 9

How more likely are you to have an OASI with ventouse or forceps?

Answer 9

ventouse: 2X
forceps: 6x –> decreases to 1.3x if episiotomy

Question 10

What is the recurrence rate of OASI?

Answer 10

5-7%

Question 11

How many women are asymptomatic after 1 yar after OASI?

Answer 11

60-80%

Question 12

About VBAC (T or F)
a) Uterine rupture happens in 10% of women using oxytocin
b) 60% of women will present with pain and an abnormal CTG during uterine rupture
c) the rate of rupture after a classical caesarean section in 12%
d) the rate of rupture with PgE2 augmentation is 1% or less
e) After 2 previous CS, the rate of uterine rupture is 1.3%
f) Rupture recurrence is around 15%
g) VBAC success after a previous VD is 90%
h) VBAC success after a CS for CTG abnormalities is around 86%

Answer 12

a) F. 1 to 1.5%
b) F. only 10% will. 80% will have an abnormal CTG and 50% will be asymptomatic
c) True
d) True
e) True
f) F. 5%
g) True
h) False. 75%. It is 90% if previous VD and 85% if CS for malpresentation