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Flashcards in prenatal care Deck (13)
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1
Q

What are ideal weight gains during pregnancy?

A

-BMI under 19.8: 28-40 lbs
BMI 19.8-26: 25-35 lbs
Weight gain needs much lower in overweight mothers (15-25 lbs)

2
Q

What labs/screening tests are indicated at the first prenatal visit?

A

CBC, blood antibody and Rh typing, pap smear, gonorrhea/chlamydia screen, UA, RPR, rubella antibody titer, Hep B, HIV
(screen for blood/fetal rejection with CBC and Rh, do maternal health screen with pap and UA, and then look for infections)

3
Q

What labs/screens are performed at 16-20wks?

A

16-18: quadruple screen: alpha fetal protein, beta hCG, unconjugated estriol, inhibin A
18-20 anatomic scan and ultrasound dating of the pregnancy

4
Q

When is the 1 hr glucose challenge performed?

A

24-28 wks

5
Q

When is GBS tested? What else is tested at this time?

A

32 to 37 wks; may also do more gonorrhea and chlamydia screens

6
Q

What are the results of the first trimester screen that suggest trisomy 21?

A

high beta hCG, hi nuchal translucency, low PAPP-A (pregnancy associated plasma protein A)

7
Q

What are the results of the first trimester screen that suggest trismoy 18 or trisomy 13?

A

low PAPP-A and hCG, high nuchal tanslucency. difference between these and trisomy 21 is the low hCG

8
Q

What are the quad screen findings that suggest trisomy 21?

A

low AFP, low estriol, high hCG, high inhibin A

9
Q

What are the quad screen findings that suggest trisomy 18?

A

low every thing; inhibin A may be normal

10
Q

When should folate supplementation be started?

A

at least 4 wks before attempted conception

11
Q

When is amniocentesis peformed and when is it indicated?

A

performed after 16 wks for abnormal quad screen, women over 35 who desire it, risk of Rh sensitization, but carries an excess 1% risk of SAB

12
Q

When is chorionic villi sampling performed?

A

9-12 wks to detect chromosome abnormalities

13
Q

What is percutaneous umbilical blood sampling?

A

blood collection from umbilical vein after 18 wk gestation to identify chromosomal defects, fetal infection and Rh sensitization