Routine prenatal care follows a defined schedule, and the exam expects you to know what happens when. These questions cover the visit cadence across all 3 trimesters, the screening done at each stage, weight and blood-pressure monitoring, the danger signs that need immediate evaluation, and which medications are safe to continue or must be stopped in pregnancy. Each rationale reflects what Family Nurse Practitioner (FNP-BC / FNP-C) candidates are expected to manage independently.
Question 1
A 48-year-old female presents because she has missed her last two menstrual periods. She reports breast tenderness and fatigue. She is sexually active and uses condoms inconsistently. Which of the following is the most appropriate next step?
- A) Reassure her these are normal perimenopausal symptoms.
- B) Order a pelvic ultrasound to evaluate her ovaries.
- C) Obtain a quantitative human chorionic gonadotropin level.✓
- D) Prescribe a short course of oral medroxyprogesterone.
💡 Key Takeaway
Pregnancy must always be ruled out in perimenopausal women presenting with secondary amenorrhea.
Show rationale
Women in their late forties can still ovulate unpredictably and conceive. Given that this 48-year-old female has missed her last two menstrual periods and uses condoms inconsistently, pregnancy must be definitively ruled out before attributing her symptoms to the menopausal transition. Option A is unsafe because it ignores the significant risk of an unintended pregnancy. Option B is unnecessary and is not the primary diagnostic step for missed periods in this context. Option D is contraindicated if the patient is pregnant, making a human chorionic gonadotropin test the essential first diagnostic action to ensure patient safety.
Question 2
A 28-year-old female is three days postpartum after an uncomplicated vaginal delivery. Her levetiracetam dose was doubled during her third trimester to maintain therapeutic levels.
- A) Maintain the elevated dose to prevent postpartum seizure exacerbation.
- B) Taper the medication slowly over the next eight postpartum weeks.
- C) Reduce the dose immediately toward her documented pre-pregnancy baseline.✓
- D) Discontinue the medication temporarily until her fluid volume fully normalizes.
💡 Key Takeaway
Antiepileptic drug doses increased during pregnancy must be rapidly reduced postpartum to prevent toxicity.
Show rationale
The pharmacokinetic changes of pregnancy, including increased glomerular filtration rate and expanded volume of distribution, reverse rapidly after delivery. Because this patient's levetiracetam dose was significantly increased during pregnancy, failing to implement an immediate dose reduction exposes her to severe postpartum drug toxicity. The dose should be reduced toward the pre-pregnancy baseline within the first few days postpartum. Option A is incorrect because maintaining the high dose will cause toxicity as her renal clearance normalizes. Option B is incorrect because an eight-week taper is too slow to match the rapid physiological shifts occurring in the immediate postpartum period. Option D is incorrect because abruptly discontinuing an antiepileptic drug will likely precipitate withdrawal seizures, endangering the patient.
Question 3
A 24-year-old patient with gestational diabetes brings her glucose log for review. She reports her breakfast consists of cereal and skim milk. Her log shows normal fasting levels, but her 1-hour post-breakfast glucose values of 155 to 162 mg/dL for the past four days. How should the nurse practitioner modify the plan of care?
- A) Increase the evening dose of the oral metformin.
- B) Substitute the morning cereal with a protein breakfast.✓
- C) Add a long-acting insulin injection before the bedtime.
- D) Decrease the frequency of the daily glucose checks.
💡 Key Takeaway
Morning insulin resistance in gestational diabetes often requires substituting high-carbohydrate breakfasts with protein-rich alternatives.
Show rationale
Pregnancy hormones cause a peak in morning insulin resistance, making high-carbohydrate meals like cereal and milk likely to cause postprandial spikes above the 140 mg/dL 1-hour target. The most appropriate first step is dietary modification, specifically swapping the carbohydrates for a protein-rich alternative. Increasing evening metformin or adding bedtime long-acting insulin targets fasting glucose, which is already normal in this patient. Decreasing glucose checks is inappropriate when the patient is actively experiencing uncontrolled postprandial hyperglycemia.
Question 4
A 30-year-old female presents for her first prenatal visit at 8 weeks gestation. Her pre-pregnancy BMI is 32 kg/m2. She asks the nurse practitioner how much weight she should aim to gain over the course of her pregnancy.
- A) Plan for a total weight gain of 25 to 35 pounds.
- B) Plan for a total weight gain of 15 to 25 pounds.
- C) Plan for a total weight gain of 28 to 40 pounds.
- D) Plan for a total weight gain of 11 to 20 pounds.✓
💡 Key Takeaway
Pregnant women with an obese BMI should limit total weight gain to 11 to 20 pounds.
Show rationale
Nutritional planning during pregnancy relies heavily on pre-pregnancy body mass index to optimize maternal and fetal outcomes. For a patient with a BMI of 32, which falls into the obese category, the Institute of Medicine recommends a total weight gain of 11 to 20 pounds. Option A describes the recommendation for a normal BMI (18.5 to 24.9). Option B is the target for an overweight BMI (25 to 29.9). Option C is the target for an underweight BMI (less than 18.5). Adhering to the 11 to 20 pounds guideline minimizes risks like gestational diabetes and macrosomia.
Question 5
A 31-year-old female at 26 weeks gestation requires a dosage adjustment for her antiepileptic medication. The NP recognizes that her expanded maternal plasma volume directly alters the drug's pharmacokinetic profile.
- A) It decreases the volume of distribution requiring lower daily doses.
- B) It increases the plasma protein binding requiring higher daily doses.
- C) It decreases the renal clearance rate requiring lower daily doses.
- D) It increases the volume of distribution requiring higher daily doses.✓
💡 Key Takeaway
Expanded maternal plasma volume increases the volume of distribution, often requiring higher medication doses.
Show rationale
Pregnancy causes a significant increase in total body water and plasma volume, which directly increases the volume of distribution for many medications, particularly hydrophilic drugs. This expanded volume dilutes the medication, lowering peak serum concentrations and often requiring higher daily doses to maintain therapeutic efficacy. Option A is incorrect because the volume of distribution increases, not decreases, during pregnancy. Option B is incorrect because pregnancy typically decreases plasma protein binding due to a dilutional drop in serum albumin, rather than increasing it. Option C is incorrect because renal clearance generally increases during pregnancy due to enhanced renal blood flow and glomerular filtration, which would also contribute to the need for higher, not lower, daily doses.
Question 6
A patient at 6 weeks gestation has a TSH of 3.8 mIU/L and a normal Free T4. Laboratory results confirm she is positive for thyroid peroxidase (TPO) antibodies. Why is close monitoring and potential intervention indicated for this specific patient?
- A) The antibodies directly cross the placenta and destroy the fetal thyroid gland.
- B) The antibodies cause severe maternal thyrotoxicosis during the third trimester.
- C) The antibodies increase the maternal risk of peripartum dilated cardiomyopathy.
- D) The antibodies increase the risk of progression to overt maternal hypothyroidism.✓
💡 Key Takeaway
Positive TPO antibodies in pregnancy increase the risk of progressing from subclinical to overt hypothyroidism.
Show rationale
Pregnant women with subclinical hypothyroidism and positive TPO antibodies are at high risk for progressing to overt hypothyroidism due to the increased metabolic demands of pregnancy overwhelming the compromised thyroid gland. This progression threatens fetal development and maternal health. Option A is incorrect because maternal TPO antibodies do not destroy the fetal thyroid; TSH-receptor antibodies in Graves' disease can affect the fetus, but not TPO. Option B is incorrect as TPO antibodies are associated with Hashimoto's and hypothyroidism, not thyrotoxicosis. Option C is incorrect because TPO antibodies are not a recognized direct cause of peripartum cardiomyopathy.
Question 7
A 31-year-old female with bipolar disorder is planning to conceive in the next three months. She currently takes divalproex sodium 500 mg twice daily and reports a highly stable mood for the past year. What is the most appropriate action?
- A) Maintain current medication and add folic acid.
- B) Switch the medication to oral carbamazepine therapy.
- C) Cross-taper the medication to oral lamotrigine therapy.✓
- D) Reduce the medication to a once daily dose.
💡 Key Takeaway
Valproate is highly teratogenic and should be transitioned to a safer mood stabilizer before conception.
Show rationale
Divalproex sodium is a known teratogen carrying a high risk of neural tube defects and cognitive impairment. It should be discontinued prior to conception. Lamotrigine is a preferred, safer mood stabilizer for bipolar disorder during pregnancy. Maintaining the current drug, even with high-dose folic acid, still poses an unacceptable teratogenic risk. Carbamazepine is also teratogenic and associated with fetal malformations. Reducing the dose does not eliminate the severe risk to the developing fetus.
Question 8
A 36-year-old male presents for a routine wellness exam. He has no chronic conditions and reports feeling well. His BMI is 26 kg/m2, and his blood pressure is 118/76 mmHg. He has no family history of diabetes. What is the most appropriate screening recommendation for this patient?
- A) Order a fasting plasma glucose or hemoglobin A1c test now.✓
- B) Delay diabetes screening until the patient reaches age forty-five.
- C) Recommend lifestyle modifications and screen for diabetes in five years.
- D) Order an oral glucose tolerance test to assess current risk.
💡 Key Takeaway
Screen adults aged 35 to 70 with overweight or obesity for type 2 diabetes.
Show rationale
The USPSTF recommends screening for prediabetes and type 2 diabetes in adults aged 35 to 70 who have overweight or obesity. Since this patient is 36 with a BMI of 26, he meets the criteria for immediate screening. Ordering a fasting plasma glucose or A1c is the standard initial step. Delaying until age 45 is outdated, as guidelines recently lowered the age to 35. Recommending lifestyle changes without screening misses the opportunity to establish a baseline diagnosis. An oral glucose tolerance test is generally reserved for pregnancy or equivocal results, not initial routine screening in this population.
Question 9
A 52-year-old male is prescribed crushed finasteride via a gastrostomy tube for BPH. His wife is currently pregnant and is responsible for administering all of his daily home medications. Which instruction is essential?
- A) Instruct the wife to wear gloves during administration.
- B) Transition the patient to an oral alpha-blocker immediately.
- C) Instruct the wife to avoid handling the medication.✓
- D) Transition the patient to an alternative 5-ARI medication.
💡 Key Takeaway
Pregnant females must strictly avoid handling crushed 5-ARIs due to severe teratogenic risks to male fetuses.
Show rationale
Finasteride is a 5-alpha reductase inhibitor that is highly teratogenic to male fetuses. Pregnant women must absolutely avoid handling crushed or broken finasteride tablets due to the severe risk of cutaneous absorption. Wearing gloves provides insufficient protection against this severe risk and is not considered safe practice. Transitioning to an alpha-blocker or another 5-ARI does not directly address the core safety issue of the pregnant wife handling the currently prescribed teratogenic medication.
Question 10
A 24-year-old female presents with left lower quadrant pain and vaginal spotting after 6 weeks of amenorrhea. A transvaginal ultrasound reveals an empty uterine cavity with a normal endometrial stripe. Her quantitative serum hCG level is 3,200 mIU/mL. Which of the following is the most likely primary diagnosis?
- A) Unruptured tubal ectopic pregnancy✓
- B) Impending threatened spontaneous abortion
- C) Spontaneous incomplete pregnancy loss
- D) Hemorrhagic physiologic ovarian cyst
💡 Key Takeaway
An empty uterus with an hCG level above the discriminatory zone indicates an ectopic pregnancy.
Show rationale
The combination of an empty uterus on ultrasound and an hCG level above the discriminatory zone (typically 1,500 to 2,000 mIU/mL) makes an ectopic pregnancy the primary diagnosis until proven otherwise. A threatened abortion would typically show an intrauterine gestational sac at this high hCG level. An incomplete pregnancy loss might present with an empty uterus, but the hCG would generally be falling, and the pain is usually midline cramping rather than unilateral. A hemorrhagic ovarian cyst could cause unilateral pain, but it does not account for the elevated hCG level without a visible intrauterine pregnancy. Therefore, the clinical picture strongly points to an extrauterine implantation.
