NURS 306/ NURS306 Quiz 1 – OB | WCU
(Latest 2026/ 2027 Update) 100% Verified
Questions & Answers | Grade A
Question 1: A pregnant woman's last menstrual period (LMP) was January 15, 2024. Using
Naegele's rule, her estimated due date (EDD) would be:
A) October 8, 2024
B) October 15, 2024
C) October 22, 2024
D) November 15, 2024
Correct Answer: C) October 22, 2024
Explanation: Naegele's rule calculates EDD by adding 7 days to the first day of LMP and
subtracting 3 months. January 15 + 7 days = January 22, then subtract 3 months = October 22,
2024.
Question 2: The normal range for fetal heart rate (FHR) in a healthy term fetus is:
A) 100-120 beats per minute
B) 110-160 beats per minute
C) 120-180 beats per minute
D) 140-200 beats per minute
Correct Answer: B) 110-160 beats per minute
Explanation: The baseline fetal heart rate range of 110-160 bpm indicates a well-oxygenated,
healthy fetus. Rates outside this range may indicate fetal distress, hypoxia, or other complications
requiring assessment.
,Question 3: A patient at 12 weeks gestation asks when she will begin to show. The nurse should
explain that the uterus rises out of the pelvis and becomes palpable above the symphysis pubis at
approximately:
A) 8-10 weeks
B) 12-14 weeks
C) 16-20 weeks
D) 24-28 weeks
Correct Answer: B) 12-14 weeks
Explanation: The uterus remains in the pelvis until 12 weeks, then gradually rises and becomes
palpable above the symphysis pubis by 12-14 weeks, when most women begin to show physical
changes.
Question 4: Which hormone is primarily responsible for maintaining the corpus luteum and
preventing menstruation in early pregnancy?
A) Estrogen
B) Progesterone
C) Human chorionic gonadotropin (hCG)
D) Prolactin
Correct Answer: C) Human chorionic gonadotropin (hCG)
Explanation: hCG, produced by the trophoblast cells, maintains the corpus luteum which continues
to produce progesterone until the placenta takes over hormone production around 10-12 weeks
gestation.
Question 5: The most accurate method for determining gestational age in the first trimester is:
A) Last menstrual period
B) Fundal height measurement
C) Crown-rump length on ultrasound
D) Quickening
Correct Answer: C) Crown-rump length on ultrasound
,Explanation: Crown-rump length measurement in the first trimester has an accuracy of ±5-7 days,
making it more reliable than LMP or physical examination findings for dating pregnancy.
Question 6: A pregnant woman's fundal height measures 24 cm at 28 weeks gestation. This
measurement is:
A) 4 cm above normal
B) 4 cm below normal
C) Within normal limits
D) Indicative of macrosomia
Correct Answer: B) 4 cm below normal
Explanation: Fundal height in centimeters should equal gestational age in weeks ±2 cm. 24 cm at
28 weeks is 4 cm below expected, possibly indicating growth restriction or oligohydramnios.
Question 7: The hormone responsible for relaxing smooth muscle and preventing uterine
contractions during pregnancy is:
A) Estrogen
B) Progesterone
C) Oxytocin
D) Prostaglandin
Correct Answer: B) Progesterone
Explanation: Progesterone maintains uterine quiescence by relaxing smooth muscle and inhibiting
contractions throughout pregnancy, dropping at term to allow labor initiation.
Question 8: A patient asks when she will feel fetal movements (quickening) in her first pregnancy.
The nurse should explain this typically occurs at:
A) 12-14 weeks
B) 16-20 weeks
C) 20-24 weeks
D) 24-28 weeks
Correct Answer: B) 16-20 weeks
, Explanation: Quickening typically occurs at 16-20 weeks in first pregnancies as fetal movements
become strong enough for maternal perception, earlier in subsequent pregnancies (14-18 weeks).
Question 9: The normal weight gain for a pregnant woman with a normal BMI (18.5-24.9) during
pregnancy is:
A) 15-25 pounds
B) 25-35 pounds
C) 28-40 pounds
D) 35-45 pounds
Correct Answer: B) 25-35 pounds
Explanation: IOM guidelines recommend 25-35 pounds total weight gain for normal BMI women:
1-4.5 pounds first trimester, 1-2 pounds per week second and third trimesters.
Question 10: Which of the following is NOT a presumptive sign of pregnancy?
A) Amenorrhea
B) Nausea and vomiting
C) Positive pregnancy test
D) Breast tenderness
Correct Answer: C) Positive pregnancy test
Explanation: Positive pregnancy test is a probable sign, not presumptive. Presumptive signs
(subjective) include amenorrhea, nausea, breast changes, and fatigue but can have other causes.
Question 11: The most common site for implantation of the fertilized ovum is:
A) Upper posterior uterine wall
B) Lower uterine segment
C) Cervical canal
D) Fallopian tube
Correct Answer: A) Upper posterior uterine wall
Explanation: The upper posterior uterine wall provides optimal blood supply and space for
placental development, accounting for approximately 70% of implantations.
(Latest 2026/ 2027 Update) 100% Verified
Questions & Answers | Grade A
Question 1: A pregnant woman's last menstrual period (LMP) was January 15, 2024. Using
Naegele's rule, her estimated due date (EDD) would be:
A) October 8, 2024
B) October 15, 2024
C) October 22, 2024
D) November 15, 2024
Correct Answer: C) October 22, 2024
Explanation: Naegele's rule calculates EDD by adding 7 days to the first day of LMP and
subtracting 3 months. January 15 + 7 days = January 22, then subtract 3 months = October 22,
2024.
Question 2: The normal range for fetal heart rate (FHR) in a healthy term fetus is:
A) 100-120 beats per minute
B) 110-160 beats per minute
C) 120-180 beats per minute
D) 140-200 beats per minute
Correct Answer: B) 110-160 beats per minute
Explanation: The baseline fetal heart rate range of 110-160 bpm indicates a well-oxygenated,
healthy fetus. Rates outside this range may indicate fetal distress, hypoxia, or other complications
requiring assessment.
,Question 3: A patient at 12 weeks gestation asks when she will begin to show. The nurse should
explain that the uterus rises out of the pelvis and becomes palpable above the symphysis pubis at
approximately:
A) 8-10 weeks
B) 12-14 weeks
C) 16-20 weeks
D) 24-28 weeks
Correct Answer: B) 12-14 weeks
Explanation: The uterus remains in the pelvis until 12 weeks, then gradually rises and becomes
palpable above the symphysis pubis by 12-14 weeks, when most women begin to show physical
changes.
Question 4: Which hormone is primarily responsible for maintaining the corpus luteum and
preventing menstruation in early pregnancy?
A) Estrogen
B) Progesterone
C) Human chorionic gonadotropin (hCG)
D) Prolactin
Correct Answer: C) Human chorionic gonadotropin (hCG)
Explanation: hCG, produced by the trophoblast cells, maintains the corpus luteum which continues
to produce progesterone until the placenta takes over hormone production around 10-12 weeks
gestation.
Question 5: The most accurate method for determining gestational age in the first trimester is:
A) Last menstrual period
B) Fundal height measurement
C) Crown-rump length on ultrasound
D) Quickening
Correct Answer: C) Crown-rump length on ultrasound
,Explanation: Crown-rump length measurement in the first trimester has an accuracy of ±5-7 days,
making it more reliable than LMP or physical examination findings for dating pregnancy.
Question 6: A pregnant woman's fundal height measures 24 cm at 28 weeks gestation. This
measurement is:
A) 4 cm above normal
B) 4 cm below normal
C) Within normal limits
D) Indicative of macrosomia
Correct Answer: B) 4 cm below normal
Explanation: Fundal height in centimeters should equal gestational age in weeks ±2 cm. 24 cm at
28 weeks is 4 cm below expected, possibly indicating growth restriction or oligohydramnios.
Question 7: The hormone responsible for relaxing smooth muscle and preventing uterine
contractions during pregnancy is:
A) Estrogen
B) Progesterone
C) Oxytocin
D) Prostaglandin
Correct Answer: B) Progesterone
Explanation: Progesterone maintains uterine quiescence by relaxing smooth muscle and inhibiting
contractions throughout pregnancy, dropping at term to allow labor initiation.
Question 8: A patient asks when she will feel fetal movements (quickening) in her first pregnancy.
The nurse should explain this typically occurs at:
A) 12-14 weeks
B) 16-20 weeks
C) 20-24 weeks
D) 24-28 weeks
Correct Answer: B) 16-20 weeks
, Explanation: Quickening typically occurs at 16-20 weeks in first pregnancies as fetal movements
become strong enough for maternal perception, earlier in subsequent pregnancies (14-18 weeks).
Question 9: The normal weight gain for a pregnant woman with a normal BMI (18.5-24.9) during
pregnancy is:
A) 15-25 pounds
B) 25-35 pounds
C) 28-40 pounds
D) 35-45 pounds
Correct Answer: B) 25-35 pounds
Explanation: IOM guidelines recommend 25-35 pounds total weight gain for normal BMI women:
1-4.5 pounds first trimester, 1-2 pounds per week second and third trimesters.
Question 10: Which of the following is NOT a presumptive sign of pregnancy?
A) Amenorrhea
B) Nausea and vomiting
C) Positive pregnancy test
D) Breast tenderness
Correct Answer: C) Positive pregnancy test
Explanation: Positive pregnancy test is a probable sign, not presumptive. Presumptive signs
(subjective) include amenorrhea, nausea, breast changes, and fatigue but can have other causes.
Question 11: The most common site for implantation of the fertilized ovum is:
A) Upper posterior uterine wall
B) Lower uterine segment
C) Cervical canal
D) Fallopian tube
Correct Answer: A) Upper posterior uterine wall
Explanation: The upper posterior uterine wall provides optimal blood supply and space for
placental development, accounting for approximately 70% of implantations.
