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Obg > Amiotic Fluid And Disorders > Flashcards

Amiotic Fluid And Disorders Flashcards

Af and disorders in detail

1
Q

Specific gravity of af

A

1.008-1010

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2
Q

Osmolarity of af

A

250mosmol/l

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3
Q

pH of af

A

7.2-7.4

If one choose 7.2

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4
Q

Max volume of af at

A

36-38weeks

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5
Q

Rate of turnover of af

A

500ml/hr

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6
Q

Major site of formation of af in early eeks /first trimester

A

Maternal plasma

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7
Q

Major site of af formation at 12-20 weeks

A

Fetal skin

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8
Q

After 20 weks site of formation of af

A

Fetal urine

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9
Q

Overall major site of formation of af

A

Fetal urine

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10
Q

Why does fetal skin stop producing af at 20 weeks

A

Keartinization of skin at 20 weeks

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11
Q

What is the normal colour of af

A

Colourless

At term straw coloured

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12
Q

Green colour af

A

Fetal distree
Breech
Transverse
Listeria infection

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13
Q

Golden yellow

A

Rh incompatibility

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14
Q

Tobacco juice

A

Iud

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15
Q

Saffron / yellowish green

A

Post dated pregnancy

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16
Q

How is amniotic fluid vol kept in check

A

Swallowing and production

17
Q

Composition of af

A

99% water

18
Q

Function of af

A

Except nutritional

19
Q

IOC of af measuent of af

A

USG

20
Q

AFI

A

a b c d add all

Normal 5-24 cm

21
Q

Best measurement unit of af

A

Single largest pocket out of all quadrant

N- 2-8cm

22
Q

Af can also be measured via volume

A

N 200ml-2l

23
Q

Poly hydroaminos

A

More or equal to 2l

24
Q

Measurement of af method

A

Single largest pocket best
AFI
Volume

25
Q

Mc mild cause of oligo and polyhy

A

Idiopathic

26
Q

Mc severe cause of oligo/poly

A 
Congenital malf 
Oligo -renal 
Poly CNS anomalies 
Ntd
Swallowing defects
27
Q

Cause of oligo

A

D - indomethacin

I iugr

L leak after amniocentesis

Men mat BP rise

P post dated preg

P prom

A amnion nodosum
Chromosomal abnormality triploidy

R renal

28
Q

Capacity of preg uterus

A

5l

29
Q

Cause of polyhydroaminos

A 
1.Increased fetal urine 
Twin 
DM 
2 swallowing defects 
3 CSF leak 
ChorAngioma 
Torch 
Rh -ve 
Trisomy
30
Q

Oligo consequence

Mc and early

A

Pulm hypoplasia

Limb reduction defects

31
Q

Poly consequences

A

Ptl

Prom

Abruptio p

PPH

32
Q

Late f/o of oligo

A

Cord compression
Fetal distress
Meconim asp

33
Q

Management of oligo

A

Amioinfusion e ns

34
Q

Mg of poly

A

Serial amiocentesis when there is resp distress in mother

Drug -indomethacin if used beyond 32 weeks cause premature closure of da

Obg (6 decks)

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