Unit 2 - KA4 - Antenatal and Postnatal Screening

Question 1

What does antenatal screening do

Answer 1

identifies teh risk of a disorder so that further tests and diagnosis can be offered

Question 2

what are examples of some techniques?

Answer 2

blood and urine tests, ultrasound scanning and diagnostic testing

Question 3

what scan takes place at 8-14 weeks

Answer 3

dating scan

Question 4

what does the dating scan do?

Answer 4

the dating scan determines the stage of the pregnancy and the due date, and is used with tests for marker chemicals which vary normally during pregnancy.

Question 5

what scan takes place at 18-20 weeks

Answer 5

anomoly scan

Question 6

what is the anomoly scan used for?

Answer 6

to detect any physical abnormalities in the limbs and vital organs of the foetus

Question 7

how often are blood and urine test done?

Answer 7

throughout the pregnancy

Question 8

what do blood and urine tests determine?

Answer 8

moniter the marker chemicals produced

Question 9

what happens if a chemical is measured at the wrong time ?

Answer 9

a false positive result can occur

Question 10

what can an atypical chemical concentration lead to?

Answer 10

it can lead to further diagnostic testing to determine if the foetus has a medical conditon.

Question 11

karyotype

Answer 11

a visual display of the chromosome complement in their homologous pairs

Question 12

Autosome

Answer 12

a chromosome that is not a sex chromosome