Sept 2015 recall Flashcards

1
Q

When is it contraindicated to perform forceps?

A

When the head is 2/5 palpable PA
Higher than spines
Not DOA

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2
Q

What is a mid cavity forceps?

A

Anything higher than +2

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3
Q

What is a risk for failed forceps (so indication to take to theatre)?

A

Big mother, BMI>30
Big baby, >4kg
Mid cavity or when 1/5 palpable PA
OP

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4
Q

Which antibiotics for GBS?
(also give for PTL as they are at inc risk of GBS, 2.3/1000 and becoming unwell with GBS mortality 20-30% if they are infected, compared with 2-3% if term)

A

Benzylpenicillin
If not severe allergy- cephalosporin
If severe allergy- vancomycin

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5
Q

What gestation is an emergency cerclage considered up to?

A

27+6,
Can delay delivery by ~34 days an a 2 fold reduction of births <34/40

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6
Q

When are you less likely to perform an emergency cerclage?

A

Dilation >4cm,
>24/40 all have an increased risk of ROM

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7
Q

If you suspect a delay in progress when the presentation is breech what should you do next?

A

Caesarean section

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8
Q

What can reduce the risk of an assisted vaginal birth?

A

Continuous support in labour
If no epidural- upright/ lateral position
If epidural- lateral position

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9
Q

How do you manage a woman with parvovirus?

A

When confirming- check for rubella at the same time
Once confirmed:
refer to FMU 4 weeks after infection
Serial scans
If suspected hydrops- amniocentesis can confirm

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10
Q

What is the risk of vertical transmission of parvovirus?

A

30%

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11
Q

What is TSH similar to, in terms of molecular structure?

A

HCG, FSH, LH

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12
Q

What is the mechanism of contraception for COCP?

A

Suppress ovulation

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13
Q

What is classed as a high risk triple/ quadruple test?

A

Up to 1 in 150- these women should be offered a NIPT

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14
Q

HIV +ve, viral load >30,000, what should the plan for delivery be?

A

IV zidovudine and c/s between 38 and 39 weeks

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15
Q

What is PEP for neonates birthed by mothers who are HIV+ve?

A

If mother has been on cART for 10 weeks, VL<50 at 36/40 and <50 on 2 separate occasions 4 weeks apart- only 2 weeks of monotherapy with zidovudine.

If all the above isnt met, but their 36/40 VL was <50 (or preterm and most recent VL <50) then 4 weeks of monotherapy will be ok

In any other situation, combined PEP should be used and should be commenced within 4hr of birth and for 4 weeks

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16
Q

What is the diagnostic test for syphilis?

A

Treponema
TPHA

17
Q

How common is syphilis

A

1 in 700 pregnant women in the UK have a positive result

18
Q

What is the treatment for syphilis?

A

1st and 2nd trimester: IM 2.4 benzylpenicillin (if early)
3rd trimester: IM benpen on d1 and d8

19
Q

Least likely organism in post partum sepsis?

A

clostridum perfringes

20
Q

Post delivery, neonate with cranial swelling with ill defined margins, extending down to the eye, significant anaemia

A

sub galeal

21
Q

Risk of placental abruption if one previously?
And if two previously?

A

4.4%
25%

22
Q

Which antihypertensives can cause neonatal hypoglycaemia?

A

labetalol

23
Q

How much AntiD per 1ml of FMH

A

125units per 1 ml

24
Q

Is there an association between migraine and pre-eclampsia?

A

Migraines gives you a two fold inc in the risk of pre-eclampsia
(also have a 4 fold risk of MI and 17 fold risk of stroke)
From TOG

25
Q

What are the clauses/ reasons allowed for a TOP?
Clue- A-E

A

A- risk of life to pregnany woman
B- risk of grave permanent injury to physical/ mental health of pregnant woman
C- Not over 24 weeks and risk to mental/ physical health of woman
D- Not over 24 weeks and risk to mental/ physical health to existing children
E- Child is likely to be born with life limiting condition/ significantly handicapped

(F and G are in emergencies, F is to save womans life, G is to prevent injury to woman)

26
Q

Chance of recurrence of shoulder dystocia?

A

10%

27
Q

Diameter of a brow presentation?
Mento-vertical

A

13.5cm

28
Q

Diameter of deflexed OP?
Occipitofrontal

A

11.5

29
Q

Diameter of flexed vertex?
suboccipito-bregmatic

A

9.5

30
Q

Diameter of a face presentation?
submentobregmatic

A

9.5

31
Q

Chances of getting a post dural headache after an epidural?

A

puncture of the dura: 0.5-2.5%
If this happens it is 70-80% likely that you will get a headache

32
Q

How long does a post dural headache last?

A

Typically 7-10 days
Blood patch can provide cure for 60-90%