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PassMed Decks > Antenatal Care > Flashcards

Antenatal Care Flashcards

1
Q

Nutritional supplements

A

folic acid

vitamin D

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2
Q

iron supplementation should be offered routinely

A

false

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3
Q

Describe reccomendations for folic acid

A

folic acid 400mcg should be given from before conception until 12 weeks to reduce the risk of neural tube defects. Certain women may require higher doses (women who take antiepileptics)

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4
Q

Describe reccomendations regarding vitamin A

A

vitamin A supplementation (intake above 700 micrograms) might be teratogenic. Liver is high in vitamin A so consumption should be avoided

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5
Q

Describe reccomendations for vitamin D

A

‘women should be advised to take a vitamin D supplement (10 micrograms of vitamin D per day), as found in the Healthy Start multivitamin supplement. Women who are not eligible for the Healthy Start benefit should be advised where they can buy the supplement’. Particular care should be taken with higher risk women (i.e. those with darker skin or who cover their skin for cultural reasons)

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6
Q

Describe reccomendations for alcohol

A

the government now recommend pregnant women should not drink. The wording of the official advice is ‘If you are pregnant or planning a pregnancy, the safest approach is not to drink alcohol at all, to keep risks to your baby to a minimum. Drinking in pregnancy can lead to long-term harm to the baby, with the more you drink the greater the risk.’

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7
Q

Describe reccomendations for smoking

A

risks of smoking including low birthweight and preterm birth should be discussed
NRT may be used but women must have stopped smoking and risks/benefits need to be discussed
neither varenicline nor bupropion should be offered to pregnant or breastfeeding women

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8
Q

Describe reccomendations for food acquired infections

A

listeriosis: avoid unpasteurised milk, ripened soft cheeses (Camembert, Brie, blue-veined cheeses), pate or undercooked meat
salmonella: avoid raw or partially cooked eggs and meat, especially poultry

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9
Q

Describe reccomendations for work

A

inform women of their maternity rights and benefits
for the majority of women it is safe to continue working. Women should be asked whether they work. The Health and Safety Executive should be consulted if there are any concerns about possible occupational hazards during pregnancy

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10
Q

Describe reccomendations for air travel

A

women > 37 weeks with singleton pregnancy and no additional risk factors should avoid air travel
women with uncomplicated, multiple pregnancies should avoid travel by air once >32 weeks
associated with increased risk of venous thromboembolism
wearing correctly fitted compression stockings is effective at reducing the risk

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11
Q

Prescribed medicines

avoid unless the benefits outweigh the risks

A

true

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12
Q

Over-the-counter medicines

should be used as little as possible during pregnancy

A

true

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13
Q

Pregnant women should be informed that few complementary therapies have been established as being safe and effective during pregnancy. Women should not assume that such therapies are safe and they should be used as little as possible during pregnancy

A

true

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14
Q

Exercise in pregnancy

A

women should be informed that beginning or continuing moderate exercise is not associated with adverse outcomes
certain activities should be avoided e,g, high-impact sports where there is a risk of abdominal trauma and scuba diving

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15
Q

Sexual intercourse

not known to be associated with any adverse outcomes

A

true

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16
Q

Nausea and vomiting

natural remedies

A

ginger and acupuncture on the ‘p6’ point (by the wrist) are recommended by NICE

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17
Q

Nausea and vomiting drugs

A

antihistamines should be used first-line (BNF suggests promethazine as first-line)

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18
Q

All women should be informed at the booking appointment about the importance for their own and their baby’s health of maintaining adequate vitamin D stores during pregnancy and whilst breastfeeding

A

true

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19
Q

NICE issued guidelines on routine care for the healthy pregnant woman in March 2008. They recommend:

A

10 antenatal visits in the first pregnancy if uncomplicated
7 antenatal visits in subsequent pregnancies if uncomplicated
women do not need to be seen by a consultant if the pregnancy is uncomplicated

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20
Q

What is booking visit for?

A

general information e.g. diet, alcohol, smoking, folic acid, vitamin D, antenatal classes
BP, urine dipstick, check BMI

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21
Q

When is booking visit?

A

8 - 12 weeks (ideally < 10 weeks)

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22
Q

Booking bloods/urine?

A

FBC, blood group, rhesus status, red cell alloantibodies, haemoglobinopathies
hepatitis B, syphilis
HIV test is offered to all women
urine culture to detect asymptomatic bacteriuria

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23
Q

What appointments for first 16 weeks?

A

8 - 12 weeks (ideally < 10 weeks) Booking visit

10 - 13+6 weeks Early scan to confirm dates, exclude multiple pregnancy

11 - 13+6 weeks Down’s syndrome screening including nuchal scan

16 weeks Information on the anomaly and the blood results.
Routine care: BP and urine dipstick

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24
Q

at 16 weeks if If Hb < 11 g/dl consider

A

iron

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25
Q

appointments between 18 - 28 weeks

A

18 - 20+6 weeks: Anomaly scan

25 weeks (only if primip) Routine care: BP, urine dipstick, symphysis-fundal height (SFH)

28 weeks: Routine care: BP, urine dipstick, SFH

Second screen for anaemia and atypical red cell alloantibodies.
If Hb < 10.5 g/dl consider iron

26
Q

anti-D prophylaxis to rhesus negative women is given when?

A

First dose 28 weeks

Second dose 34 weeks

27
Q

Second screen for anaemia and atypical red cell alloantibodies is when

A

28 weeks

28
Q

Describe antenatal care after 28 weeks

A

31 weeks: (only if primip) Routine care as above

34 weeks: Routine care as above
Second dose of anti-D prophylaxis to rhesus negative women*
Information on labour and birth plan

36 weeks: Routine care as above
Check presentation - offer external cephalic version if indicated
Information on breast feeding, vitamin K, ‘baby-blues’

38 weeks: Routine care as above

40 weeks: (only if primip) Routine care as above
Discussion about options for prolonged pregnancy

41 weeks: Routine care as above
Discuss labour plans and possibility of induction

29
Q

Conditions for which screening should NOT be offered

A 
Chlamydia
Group B Streptococcus
Bacterial vaginosis
Fragile X
Cytomegalovirus
Hepatitis C
Toxoplasmosis
30
Q

Conditions which all pregnant women should be offered screening

A 
Anaemia
Bacteriuria
Blood group, Rhesus status and anti-red cell antibodies
Down's syndrome
Fetal anomalies
Hepatitis B
HIV
Neural tube defects
Risk factors for pre-eclampsia
Syphilis
31
Q

Conditions which all pregnant women with relevant hx should be offered screening

A 
Placenta praevia
Psychiatric illness
Sickle cell disease
Tay-Sachs disease
Thalassaemia
32
Q

good source of folic acid?

A

Green, leafy vegetables

33
Q

Folic acid is converted to

A

tetrahydrofolate (THF).
THF plays a key role in the transfer of 1-carbon units (e.g. methyl, methylene, and formyl groups) to the essential substrates involved in the synthesis of DNA & RNA

34
Q

Causes of folic acid deficiency:

A

phenytoin
methotrexate
pregnancy
alcohol excess

35
Q

Consequences of folic acid deficiency:

A

macrocytic, megaloblastic anaemia

neural tube defects

36
Q

Prevention of neural tube defects (NTD) during pregnancy

A

all women should take 400mcg of folic acid until the 12th week of pregnancy

women at higher risk of conceiving a child with a NTD should take 5mg of folic acid from before conception until the 12th week of pregnancy

37
Q

women are considered higher risk of NTD if any of the following apply:

A

either partner has a NTD, they have had a previous pregnancy affected by a NTD, or they have a family history of a NTD

the woman is taking antiepileptic drugs or has coeliac disease, diabetes, or thalassaemia trait.

the woman is obese (defined as a body mass index [BMI] of 30 kg/m2 or more).

38
Q

The symphysis-fundal height (SFH) is

A

measured from the top of the pubic bone to the top of the uterus in centimetres

It should match the gestational age in weeks to within 2 cm after 20 weeks, e.g. if 24 weeks then the a normal SFH = 22 to 26 cm

39
Q

A nuchal scan is performed at

A

11-13 weeks.

40
Q

Causes of an increased nuchal translucency include:

A

Down’s syndrome
congenital heart defects
abdominal wall defects

41
Q

Causes of hyperechogenic bowel:

A

cystic fibrosis
Down’s syndrome
cytomegalovirus infection

42
Q

NICE issued guidelines on antenatal care in March 2008 including advice on screening for Down’s syndrome

A

the combined test is now standard

if women book later in pregnancy either the triple or quadruple test should be offered between 15 - 20 weeks

43
Q

What does the combined test for downs consist of?

A

nuchal translucency measurement + serum B-HCG + pregnancy-associated plasma protein A (PAPP-A)

44
Q

Down’s syndrome is suggested by what results on combined testing

A

↑ HCG, ↓ PAPP-A, thickened nuchal translucency

45
Q

how do other syndromes compare to combined test results for downs

A

trisomy 18 (Edward syndrome) and 13 (Patau syndrome) give similar results but the PAPP-A tends to be lower

46
Q

if women book later in pregnancy either the triple or quadruple test should be offered between 15 - 20 weeks
triple test consists of?

A

alpha-fetoprotein, unconjugated oestriol, human chorionic gonadotrophin

47
Q

if women book later in pregnancy either the triple or quadruple test should be offered between 15 - 20 weeks
quadruple test consists of?

A

alpha-fetoprotein, unconjugated oestriol, human chorionic gonadotrophin and inhibin-A

48
Q

pathophysiology rhesus negative pregnancies?

A

along with the ABO system the Rhesus system is the most important antigen found on red blood cells. The D antigen is the most important antigen of the rhesus system

if a Rh -ve mother delivers a Rh +ve child a leak of fetal red blood cells may occur
this causes anti-D IgG antibodies to form in mother
in later pregnancies these can cross placenta and cause haemolysis in fetus

49
Q

around ?% of mothers are rhesus negative (Rh -ve)

A

15%

50
Q

Rhesus reaction never occurs in first pregnancy

A

false

can also occur in the first pregnancy due to leaks

51
Q

test for D antibodies in all Rh -ve mothers happens when

A

at booking

52
Q

NICE (2008) advise giving what to non-sensitised Rh -ve mothers at 28 and 34 weeks

A

anti d

53
Q

in terms of anti D the evidence base suggests that there is little difference in the efficacy of single-dose (at 28 weeks) and double-dose regimes (at 28 & 34 weeks). For this reason the RCOG in 2011 advised that either regime could be used ‘depending on local factors’

A

true

54
Q

anti-D is prophylaxis - once sensitization has occurred it is irreversible

A

true

55
Q

(rhesus -ve pregnancy) if event is in 2nd/3rd trimester what should you do?

A

give large dose of anti-D and perform Kleihauer test - determines proportion of fetal RBCs present

56
Q

Anti-D immunoglobulin should be given as soon as possible (but always within 72 hours) in the following situations:

A

delivery of a Rh +ve infant, whether live or stillborn
any termination of pregnancy
miscarriage if gestation is > 12 weeks
ectopic pregnancy (if managed surgically, if managed medically with methotrexate anti-D is not required)
external cephalic version
antepartum haemorrhage
amniocentesis, chorionic villus sampling, fetal blood sampling
abdominal trauma

57
Q

all babies born to Rh -ve mother should have what tests at delivery?

A

cord blood taken at delivery for FBC, blood group & direct Coombs test

58
Q

What is coombs test

A

Coombs test: direct antiglobulin, will demonstrate antibodies on RBCs of baby

59
Q

What is Kleihauer test

A

Kleihauer test: add acid to maternal blood, fetal cells are resistant

60
Q

Fetus affected by rhesus disease will present with

A

oedematous (hydrops fetalis, as liver devoted to RBC production albumin falls)
jaundice, anaemia, hepatosplenomegaly
heart failure
kernicterus

61
Q

Fetus affected by rhesus disease mx

A

treatment: transfusions, UV phototherapy

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