MSRA: Screening Flashcards
1
Q
When can the combined screening test be performed?
A
10 to 13+6
2
Q
When can the quadruple screening test be performed?
A
14 weeks onwards
3
Q
What makes up the combined screening test?
A
USS measurement of nuchal transluceny
Blood test: bHCG and PAPP-A
4
Q
What makes up the quadruple screening test?
A
Blood test: aFP, unconjugated oestrodiol, bHCG and inhibin A
5
Q
What is a high chance result?
A
1 in 150 or more
6
Q
When can chorionic villus sampling be performed?
A
11 to 13+6
7
Q
When can amniocentesis be performed?
A
15 to 22 weeks
8
Q
What options are available following a high chance result?
A
A further screening test: NIPT
An invasive diagnostic test: CVS or amnio
9
Q
What results from first trimester screening suggest Down’s syndrome?
A
Increased NT
Increased bHCG
Low PAPPA
