Obstetric Nurse Test Obstetric Nurse Prenatal Care and Patient Education 1 — Questions and Answers
Question 1: At what gestational age is the first prenatal visit typically scheduled in the US?
- 6–8 weeks (Correct answer)
- 10–12 weeks
- 14–16 weeks
- 18–20 weeks
Correct answer: 6–8 weeks
The first prenatal visit is ideally scheduled at 6–8 weeks to confirm the pregnancy and establish baseline assessments.
Question 2: Which screening is routinely performed at the first prenatal visit to determine maternal blood compatibility?
- ABO typing only
- ABO and Rh typing (Correct answer)
- HLA typing
- Rh typing only
Correct answer: ABO and Rh typing
Both ABO and Rh blood typing are performed at the first prenatal visit to identify Rh-negative mothers who may need RhoGAM.
Question 3: The quad screen (AFP, hCG, unconjugated estriol, inhibin A) is typically performed at which gestational age?
- 10–13 weeks
- 15–20 weeks (Correct answer)
- 22–24 weeks
- 28–32 weeks
Correct answer: 15–20 weeks
The quad screen is a second-trimester screening performed between 15–20 weeks gestation to assess risk for chromosomal abnormalities and neural tube defects.
Question 4: At what gestational age is the glucose challenge test (GCT) for gestational diabetes screening typically performed?
- 16–20 weeks
- 24–28 weeks (Correct answer)
- 30–32 weeks
- 36–38 weeks
Correct answer: 24–28 weeks
The 1-hour 50g glucose challenge test is routinely performed between 24–28 weeks when gestational diabetes is most likely to develop.
Question 5: Which vitamin supplement is recommended before conception and in early pregnancy to prevent neural tube defects?
- Vitamin C
- Vitamin D
- Folic acid (Correct answer)
- Iron
Correct answer: Folic acid
Folic acid (400–800 mcg/day) taken before conception and through the first trimester significantly reduces the risk of neural tube defects such as spina bifida.
Question 6: Group B Streptococcus (GBS) screening is routinely performed at which gestational age?
- 20–24 weeks
- 28–32 weeks
- 35–37 weeks (Correct answer)
- 40–41 weeks
Correct answer: 35–37 weeks
Rectovaginal GBS swab cultures are obtained at 35–37 weeks; a positive result requires intrapartum antibiotic prophylaxis during labor.
Obstetric Nurse Test Obstetric Nurse Prenatal Care and Patient Education 1
At what gestational age is the first prenatal visit typically scheduled in the US?