FGR Flashcards

1
Q

Why is FGR such a problem

A

Can lead to stillbirths

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2
Q

What is the rate of stillbirth normally vs is FRG

A

5/1000 vs 10/1000

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3
Q

What causes hypoperfusion of baby from placenta

A

Cytotrophoblasts not invading far enough into spiral arteries —> increased resistance in BVs

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4
Q

Causes of FGR

A

Reduced blood flow to uterus / placenta
Placental abruption
Chromosomal anomaly
Foetal infection in PROM
Multiple preg
Smoking / drugs
Undernourishment of mother
Maternal anaemia
Pre eclampsia / CKD / AID

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5
Q

What is FGR associated with in practice

A

Lots unknown
Pre eclampsia
APH
Smoking

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6
Q

Define SGA

A

Infant born under 10th centile / <2.5kg

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7
Q

What is FGR

A

foetus failed to reach growth potential

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8
Q

How is SGA different from FGR

A

SGA is constitutionally small and can be normal

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9
Q

What does growth represent in terms of pregnancy

A

Placental function

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10
Q

What does antenatal screening look for

A

Pre eclampsia
IUGR

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11
Q

When is FGR apparent

A

After 20 weeks

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12
Q

List normal fundal heights of preg

A

12 weeks = symphysis pubis
16 weeks = between the 2
22 weeks = umbilicus
22 to 36 weeks = weeks of gestation

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13
Q

When is SFH not useful

A

High BMI
Fibroids
Multi preg
Transverse lie

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14
Q

3 elements of USS for FGR

A

foetal measurements
Amniotic fluid assessment
Dopplers

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15
Q

What foetal measurements are done

A

Abdo circ
EFW

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16
Q

When would amniotic fluid assessment be different

A

PROM
Oligohydramnios (<5th centile)

17
Q

What 2 dopplers are done

A

Maternal uterine artery
Umbilical artery

18
Q

When is uterine artery Doppler done

A

20-24 weeks ONLY

19
Q

What is uterine artery Doppler done for

A

High risk IUGR
Resistance of UAs

20
Q

What does umbilical artery Doppler show

A

Foetal compromise

21
Q

When is umbilical artery Doppler done

A

24+ weeks too

22
Q

Describe good / bad / very bad umbilical artery outcomes

A

Good = present end diastolic flow
Bad = absent EDF
Very bad = reversed EDF

23
Q

How bad is raised pulsatility index

A

Between absent and normal EDF

24
Q

What was included in the saving babies lives care bundle

A

Reduce smoking
Risk assess and surveillance of suspected FGR
Increase awareness of reduced foetal movements
Effective foetal monitoring during labour
Reduce pre term birth

25
Q

What are the moderate risk factors for FGR

A

Prev SGA or prev AGA stillbirth
Smoker / drugs
>40 years old

26
Q

What are the more severe risk factors for FGR

A

Medical conditions - CKD, HTN, AID
Prev FGR or SGA stillbirth
PAPPA <5th centile
Echogenic bowel
EFW <10th centile

27
Q

Mx of FGR

A

aspirin
Uterine artery Doppler
Serial USS (2 weeks apart)

28
Q

When is CTG done in FGR

A

if it’s really bad later on in preg

29
Q

Why is CTG not done routinely for FGR

A

CTG is looking for hypoxia acutely but FGR is chronic so won’t be picked up
Can be falsely reassuring

30
Q

When is an elective C section done for FGR

A

39 weeks

31
Q

Why is C section not done earlier / later for FGR

A

Earlier - risk of TTN
Later - risk of spontaneous labour

32
Q

Can too many contractions be bad? Why/why not?

A

Yes - can cause hypoxia to newborn due to reduced blood flow

33
Q

When is oligohydramnios common

A

FGR and PPROM

34
Q

When is polyhydramnios common

A

GDM, T1DM, placental abruption, premature labour

35
Q

How does the placenta get delivered (how does it come out uterus)

A

Uterus contracts and placenta peels off the surface