Numbers 4 Flashcards
% fetal death and % fetal structural abnormalities in NT >6.5mm
20%
45%
% fetal loss in 2nd trimester oligohydramnios
> 80%
% pulmonary hypoplasia with SROM 21/40
90%
% pulmonary hypoplasia with SROM 25/40
50%
% pulmonary hypoplasia with SROM 29/40
10%
Incidence of NTD
1-2:1000
Recurrence of NTD after 1 pregnancy
5%
Recurrence of NTD after 2 pregnancies
12%
Recurrence of NTD after 3 pregnancies
20%
Risk congenital heart disease in NT >3.5mm and normal chromosomes
6%
% congenital heart disease picked up by 4 chamber view
40-50%
% congenital heart disease picked up by 4 chamber view plus pulmonary and aortic outflow tracts
65-70%
% CDH related to karyotype abnormalities
10-20%
% exomphalos associated with fetal abnormalities
70-80%
Incidence cleft lip or palate
1:1000
Risk of cleft lip/palate recurrence with 1 child
4%
% AC and EFW <5th centile with chromosomal defects
19%
Abdo palpation and examination detects how many SGA
30%
Risk severe sepsis with amniocentesis
<1:1000
% women with breast cancer who become pregnant
<10%
5yr survival rate breast cancer <50yo
80%
% >15yo seropositive for VZV
> 90%
% FVS if serological conversion <28/40
1%
% FVS if serological conversion <28/40 without VZIG
2.8%
% babes infected if VZV within 1-4/52 of delivery
50%
% of infected VZV babes with clinical varicella
25%
% obese AN women
21%
% maternal arrests due to anaesthesia
and % of these obese
25%
75%
Increased risk of congenital abnormalities in GDM + obesity
3 fold
Success rate of obese VBA
54.6%
% breech at term deliveries
3-4%
% babes that spontaneously turn to cephalic without ECV
8%
% babes that spontaneously turn to cephalic with unsuccessful ECV
3-7%
% babes reverting to breech after successful ECV
3%
% EMCS within 24hrs from ECV
0.5% (90% due to PVB)
% risk FMH in ECV
2.4%
% abnormal US in RFM
11.6%
% pregnancies uncomplicated with single RFM
70%
CTG with accelerations reduces incidence of stillbirth by..
1.9 vs 26:1000
USS reduces incidence of stillbirth by..
2 vs 3:1000
Twin selective reduction - chance that co-twin survives
up to 82%
Twin selective reduction - chance that co-twin dies
15-18%
Twin selective reduction - risk PPROM
10-15%
% twin pregnancies that are monochorionic
30%
% monochorionic twins that are MCMA
1%
% monochorionic twins with TTTS
15%
% monochorionic twins with SGR
15%
% monochorionic twins with TTTS with SGR
50%
Risk of TAPS post laser ablation
13%
% fetal loss with monochorionic vs dichorionic twins
14% vs 2.6%
recurrence of TTTS post laser ablation
14%
NICE - % congenital abnormalities in multiples
4.9%
% spontaneous birth <35/40 in triplets
75%
% spontaneous birth <37/40 twins
50-60%
Urea level for renal replacement therapy in PET
17
Risk recurrence future PIH with previous PIH
16-47%
Risk recurrence future PET with previous PIH
2-7%
Risk recurrence future PIH with previous PET
13-53%
Risk recurrence future PET with previous PET
16%
Risk recurrence future PET with previous PET Cx by severe PET/HELLP/eclampsia <34/40
25%
Risk recurrence future PET with previous PET Cx by severe PET/HELLP/eclampsia <28/40
55%
Survival of non-hydropic fetal anaemia from RC abs
94%
Survival of hydropic fetal anaemia from RC abs
74%
overall 84%
Anti D level of moderate risk
> 4 <15
Anti D level of severe risk
> 15
Anti c level of moderate risk
> 7.5 <20
Anti c level of severe risk
> 20
% severe SGA at 20/40 due to aneuploidy
20%
% severe SGA at 20/40 due to infection
5%
% SGA babes that are constitutionally small
50-70%
Risk of CS if IOL for SGA (10th centile) with normal dopplers
6-9%
Risk of CS if IOL for SGA with dopplers >95th centile
17-32%
% depression in 1st year after birth
15-20%
Postpartum pyschosis incidence
1-2:1000
Vit D requirement in pregnancy
6000IU/day
% polyhdramnios is idiopathic
60%
% polyhydramnios caused by DM or and congestive heart failure
25%
% polyhydramnios due to fetal anomalies
15%
% worsening spasticity in SCI in pregnancy
10-15%
VTE incidence in pregnancy
8:100,000
Absolute risk VTE in pregnancy and puerperim
1-2:1000
% of PET
3-5%
% that combo of maternal risk factors, MAP, placental biomarkers (PLGF/PAPPA) and uterine artery doppler can predict early onset PET
88.5%
Late onset 46.7%
PIH 35.3%
% Aspirin reduces: PET Fetal/NND FGR PTB
17%
14%
10%
8%
Risk placenta accreta and hysterectomy if 1 CS
0.3-0.6%
Risk placenta accreta and hysterectomy if 6 CS
6-9%
Risk of accreta if current praevia
3%
Risk of accreta if current praevia + 1 CS
11%
Risk of accreta if current praevia + 2 CS
40%
Risk of accreta if current praevia + 3 CS
60%
Risk of accreta if current praevia + 4 CS
67%
% shoulder dystocia in LGA
9-24%
AFI >60th centile + EFW >71st centile - PPV for LGA?
85%
Increasing maternal BMI >25% in pregnancy - sensitivity, specificity and NPV for LGA
86%
93%
97%
Recurrence if previous shoulder dystocia
1-16%
% pruritis in pregnancy and recurrence
18%
80%
Incidence of atopic eruption of pregnancy
1:300
Incidence PEP
1:160-300
Incidence pemphigoid
1:1700-50,000
MCA PSV sensitivity for fetal anaemia
100%
% VBAC’s spontaneously labouring <39/40
10%
Risk of transfusion with unsuccessful VBAC
3.2%
% uterine rupture is asymptomatic
48%
Risk uterine rupture with misoprostol
5%
Steroids between 37-38+6/40 for CS reduces RDS from… to…
6.7% to 2.7%
% autopsy provides classification of death in stillbirths
45.9%
Stillbirth rate
1:200
