Antenatal Care and Screening Flashcards

1
Q

How many antenatal meetings are normally made prior to 20 weeks gestation?

A

4

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2
Q

What tests are usually done in an antenatal meeting?

A

Abdominal examination
Ultrasound
FBC, U&E, glucose
Rubella, syphilis
Antibodies (Rhesus)

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3
Q

What markers are used to estimate gestational age?

A

Biparietal diameter (crown-rump length)
Femur length

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4
Q

What is “foetal lie”?

A

Relation of foetal spine to maternal spine
Longitudinal lie: parallel to maternal spine
Transverse lie: horizontal to maternal spine

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5
Q

What is “foetal engagement”?

A

Relation of foetal head to pelvic rim

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6
Q

Which scan is used to screen for foetal anomaly?

A

Ultrasound

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7
Q

What tests can be used to detect the risk of Down’s syndrome in 1st trimester?

A

Skin thickness behind foetal neck (Nuchal thickness)
bHCG and PAPP-A levels

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8
Q

What tests can be used to detect the risk of Down’s syndrome in 2nd trimester?

A

Blood sample
HCG and AFP levels

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9
Q

Low AFP and high HCG increases/decreases risk of Down’s syndrome

A

Low AFP and high HCG increases risk of Down’s syndrome

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10
Q

High AFP and low HCG is associated with increased risk of what particular foetal anomaly?

A

Spina bifida

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11
Q

What are the 2 main specific diagnostic tests that can be done for foetal karyotyping?

A

Amniocentesis
Chorionic villus sampling

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