Obstetric random stats Flashcards
1
Q
Risk of cord prolapse
A
- 0.1/0.6%
- 1% in breech presentation
2
Q
Risk of placenta praevia
A
1:200
3
Q
Risk of caesarean hysterectomy in VBAC
A
0.06%
4
Q
Perinatal mortality in cord prolapse
A
91/1000
5
Q
Risk of PET in general population
A
2-3%
1.6 - 10 : 10 000
6
Q
Risk of Eclampsia
A
- 38% antepartum
- 18% intrapartum
- 44% postpartum
7
Q
Balanced translocation (13,14,15,22) stats
A
- In mother 1 : 8
- In father 1 : 40
- If either parent has “21” translocation the risk of Downs will be 100%
8
Q
Recurrence of neural tube defect
A
- 2 - 3 %
- Spina bifida: 1 - 5 %
9
Q
Fetal alcohol syndrome %
A
- 1 -2 : 1000
- 30 - 33 % women who drink > 18 units per week
10
Q
Congenital heart disease risk
A
- If you have one child: 1.5 - 5 %
- if mother has it: 2.5 - 18 % ( average 6 - 7%)
- If father has it: 1.5 - 3 %
- Mothers with ASD have a risk of 5-10% of their fetuses having the same
- Mother having aortic stenosis have 18-20% chance of their baby developing it
11
Q
Incidence of tetralogy of fallot
A
0.4 : 1000
12
Q
Incidence of Klinefelter
A
1 : 1000
13
Q
Incidence of trisomy 18
A
1 : 8000
14
Q
Risk of AFE
A
1 : 80 000 deliveries
15
Q
GDM recurrence
A
66%
