Diagnostic Evaluation Flashcards
(8 cards)
1
Q
Where is beta-hCG produced?
A
The placenta
2
Q
How is beta-hCG produced in the 1st trimester?
A
rapidly: doubles every 48 hours for the first 4 weeks?
3
Q
In the first trimester how often should b-hCG double?
A
48 hours
4
Q
When does b-hCG peak?
A
10 weeks of gestation
5
Q
What happens to b-hCG in the 2nd trimester?
A
Levels drop
6
Q
What happens to b-hCG in the 3rd trimester?
A
Levels increase slowly again to 20-30,000
7
Q
What test is used to confirm intrauterine pregnancy?
A
US
8
Q
When should a gestational sac with a yolk-sac be seen on US?
A
5-6 weeks gestational age or b-hCG of 1,500
