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MRCOG Part 2 > Numbers 5 > Flashcards

Numbers 5 Flashcards

1
Q

% of positive GBS swabs at 35-37/40 weeks that are negative at delivery

A

17-25%

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2
Q

% of negative GBS swabs at 35-37/40 weeks that are positive at delivery

A

5-7%

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3
Q

Risk EOGBS if previous baby with GBS

A

1:700-800

50% carriage

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4
Q

Risk EOGBS with positive swab

A

1:400 or 2:1000

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5
Q

Risk EOGBS with negative swab

A

1:5000

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6
Q

Overall incidence EOGBS (BG)

A

0.57:1000 OR 1:2000

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7
Q

Risk of EOGBS if preterm

A

2.3:1000

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8
Q

Risk of EOGBS if PIL

A

5.3:1000

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9
Q

% planned vaginal breech deliveries needing EMCS

A

40%

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10
Q

Risk of stillbirth in VBAC

A

10:10,000

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11
Q

% breech undiagnosed

A

25%

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12
Q

Incidence of interlocking twins

A

1:817

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13
Q

Risk DIC within 4 weeks of IUD

A

10%

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14
Q

Risk of DIC >4 weeks of IUD

A

30%

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15
Q

% of major contributor to death found in placentas

A

88%

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16
Q

% IUD deliver spontaneously within 3/52

A

> 85%

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17
Q

% vaginal births achieved within 24hrs with IOL for IUD

A

90%

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18
Q

% women with sepsis during IOL for IUD

A

3%

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19
Q

% vasa praevia that resolves in 3rd trimester

A

15%

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20
Q

Incidence of adverse fetal outcomes in primip homebirth

A

9:1000

BG 5:1000

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21
Q

% homebirths transfer to obstetric unit for FTP in 1st stage

A

32%

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22
Q

Risk of serious neonatal infection with SROM

A

1%

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23
Q

Risk serious neonatal infection with intact membranes

A

0.5%

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24
Q

% that labour within 24hrs ROM

A

60%

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25
Q

1st stage of labour lasts an average…

A

8hrs

unlikely >18hrs

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26
Q

2nd and subsequent labours last an average…

A

5hrs

unlikely >12hrs

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27
Q

Maternal collapse incidence

A

0.14-6;1000

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28
Q

MOH incidence

A

3.7:1000

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29
Q

Aortocaval compression reduces venous return by…

A

30-40%

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30
Q

Placenta receives how much of cardiac output

A

10%

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31
Q

Risk chorioamnionitis in PPROM

A

30%

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32
Q

Mortality rate of severe sepsis

A

20-40%

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33
Q

Mortality rate of septic shock

A

60%

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34
Q

Recurrence of abruption if 2 previous abruptions

A

19-25%

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35
Q

% women with persistent vaginal discharge after UAE

A

16% at 12/12

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36
Q

% fibroid expulsion after UAE

A

10%

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37
Q

% diabetes in pregnancy

A

5%

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38
Q

% PET in diabetic pregnancies

A

10-20%

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39
Q

Aim BM in diabetic pregnancy when fasting/on waking

A

<5.3mmol/L

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40
Q

Aim BM in diabetic pregnancy before meals

A

4-7mmol/L

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41
Q

Aim preconception HbA1C

A

<48 or <6.5%

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42
Q

Avoid pregnancy if preconception HbA1c is…

A

> 86 or >10%

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43
Q

Aim BM in diabetic pregnancy 1hr post-prandial

A

<7.8

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44
Q

Aim BM in diabetic pregnancy 2hr post-prandial

A

<6.4

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45
Q

% of GDM needing Metformin or Insulin

A

10-20%

46
Q

Level of fasting BM prompting immediate insulin treatment

A

> 7

47
Q

Level of fasting BM prompting immediate insulin treatment if macrosomia or polyhydramnios

A

> 6

48
Q

% of increasing insulin requirement in pregnancy with pre-existing DM

A

30%

49
Q

% risk children of T1DM develop DM

A

5-6%

50
Q

% risk children of T2DM develop DM

A

10-15%

51
Q

Aim BM in T1DM preconception fasting/waking

A

5-7

52
Q

Aim BM in T1DM preconception premeal

A

4-7

53
Q

% risk of macro prolactinoma enlargening in pregnancy

A

30%

54
Q

Incidence diabetes insipidus in pregnany

A

1:30,000

55
Q

Head entrapment in extreme preterm breech delivery

A
  1. 3%

5. 6% by CS

56
Q

Serious maternal risks in classical CS

A

23%

57
Q

% women with DI who deteriorate in pregnancy

A

50%

58
Q

CAH carrier incidence

A

1:60

59
Q

% women with CAH + adequate vaginal introitus who are fertile

A

30-60%

60
Q

% thyroid disorders in pregnancy

A

2-3%

61
Q

% neonatal thyrotoxicosis with passage of TSH receptor antibodies

A

1-5%

Mortality 12-20%

62
Q

% women with hyperemesis gravidarum with gestational thyrotoxicosis

A

12-20%

63
Q

TSH level in hypothyroidism

A

> 10, irrespective of T4

64
Q

% subclinical hypothyroidism in pregnancy

A

2-5%

TSH 2.5-10

65
Q

RCOG recommendation of Vit D per day

A

1000IU

66
Q

Aim TSH level during 1st trimester

A

0.2-2.5

67
Q

Aim TSH level during 2nd trimester

A

0.5-3.0

68
Q

% who die of cardiac failure from iron overload

A

50%

69
Q

Aim MRI T2 level in beta thalassaemia

A

> 20ms

70
Q

MRI T2 level in beta thalassaemia associated with cardiac failure

A

<10ms

71
Q

Aim for liver iron in b thalassaemia

A

<7mg/g

72
Q

Liver iron level that requires iorn chelation

A

> 15mg/g

73
Q

% alloimmunity in beta thalassaemia

A

16.5%

74
Q

pretransfusion Hb level aim in beta thalassaemia major

A

> 100

75
Q

% AKI in UK pregnancies

A

1.4%

76
Q

Risk alloimmunisation in SCD

A

18-36%

77
Q

% SCD with crisis in pregnancy

A

27-50%

78
Q

% OC in pregnancy

A

0.7%

79
Q

UK risk stillbirth in OC

A

5.6:1000

80
Q

% meconium in OC if BA >40

A

44%

81
Q

% meconium in OC

A

25%

82
Q

OC recurrence

A

45-90%

83
Q

% of neonates with haemophilia and no FH

A

50%

84
Q

Chance mother is carrier if neonate has haemophilia

A

90%

85
Q

% Haemophilia with clotting factor antibodies

A

10-40%

86
Q

Normal Factor VIII/IX levels

A

0.5-2iu/ml

87
Q

Mild haemophilia

A

0.06-0.4

88
Q

Moderate haemophilia

A

0.01-0.05

89
Q

Severe haemophilia

A

<0.01

90
Q

Aim of factor level for procedures

A

at least 0.5iu/ml

91
Q

Aim of factor level if treatment needed

A

1iu/ml

92
Q

Overall risk of epidural haematoma

A

1:16,800

93
Q

Prevalence of clinically relevant von Willebrand’s disease

A

1:10,000

94
Q

Risk of primary PPH in von Willebrand’s disease

A

15-30%

95
Q

Risk of secondary PPH in von Willebrand’s disease

A

25%

96
Q

Aim of VWF:RCo activity

A

> 0.5iu/ml

aim >1 when treating

97
Q

Increased risk of VTE with antithrombin deficiency

A

30%

98
Q

% of fetuses exposed to warfarin between 6-12/40 that develop warfarin embryopathy

A

5%

99
Q

Incidence of PIH

A

4.2-7.7%

100
Q

% thrombocytopenia caused by gestational thrombocytopenia

A

75%

101
Q

% thrombocytopenia caused by hypertensive disease of pregnancy

A

15-20%

102
Q

Platelet aim for regional anaesthesia

A

> 80

103
Q

Platelet aim for vaginal delivery

A

> 50

104
Q

% extensive ICH in severe NAIT

A

20%

105
Q

Relative risk of VTE in puerperim

A

20 fold

106
Q

% untreated DVT that leads to PE

A

15-24%

107
Q

Risk of childhood cancer with V/Q scan

A

0.5mGy

(BG 1:17,000/mGy

108
Q

Risk childhood cancer with CTPA

A

0.1mGy

BG 1:17,000/mGy

109
Q

Increased risk of breast cancer with CTPA

A

13.6%

BG risk 0.1% therefore woman’s risk is 0.236%

110
Q

% of VTE in pregnancy with underlying heritable or acquired thrombophilia

A

50%

111
Q

% of women developing post thrombotic syndrome post DVT

A

42%

MRCOG Part 2 (7 decks)

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