1. A 16-year-old female treated for anorexia nervosa has achieved 95% of her median expected body weight. Which clinical marker best confirms the restoration of her normal hypothalamic-pituitary-ovarian axis function?
Answer: C
Functional hypothalamic amenorrhea is a direct result of severe energy deficits in anorexia nervosa, which suppresses the hypothalamic-pituitary-ovarian axis. The resumption of spontaneous regular menstrual cycles, Option C, is the most reliable clinical sign that energy balance has been restored enough to support normal reproductive endocrine function. While Options A, B, and D represent excellent indicators of overall physiological recovery and cardiovascular or metabolic stability, they do not specifically confirm the normalization of the reproductive endocrine axis like the return of menses does.
2. A 28-year-old female presents for a well-woman examination. She has a history of Hodgkin lymphoma treated with mantle field radiation at age 18. She has no current breast complaints. What is the most appropriate breast cancer screening plan?
Answer: B
High-risk patients with a history of chest radiation between ages 10 and 30 require intensive screening. Guidelines recommend annual MRI and mammography starting eight years post-treatment, but not before age 25. Option B is correct because this patient is 28 and 10 years post-radiation, meeting criteria for both modalities. Option A is incorrect as ultrasound does not replace MRI for high-risk screening. Option C is insufficient because clinical exams lack the necessary sensitivity for this elevated risk level. Option D inappropriately relies on self-exams and only a baseline mammogram rather than ongoing, advanced high-risk surveillance.
3. A 42-year-old female of Ashkenazi Jewish descent reports a maternal aunt with breast cancer at age 48. She requests a BRCA blood test today.
Answer: B
The USPSTF recommends that primary care providers use a brief familial risk assessment tool for women with a family history associated with an increased risk for deleterious mutations. Because she has Ashkenazi Jewish ancestry and a relative with early-onset breast cancer, she requires formal risk assessment first. Option B is correct because a validated tool determines if genetic counseling is warranted. Option A skips the required assessment and counseling steps. Option C is premature without a positive risk assessment and counseling. Option D is incorrect because her specific ancestry and family history are clear indications for further evaluation.
4. A 40-year-old female presents for an annual wellness exam. She has no family history of breast cancer and no breast complaints. She asks when she should begin mammography screening.
Answer: A
The updated USPSTF guidelines recommend biennial screening mammography starting at age 40 for average-risk women, rather than waiting until age 50. Option A aligns perfectly with this updated standard of care. Option B reflects older, outdated guidelines that delayed routine screening until age 50, which is no longer the recommended practice for average-risk patients. Option C is incorrect because ultrasound is not utilized as a primary screening tool for average-risk women; it is typically reserved for targeted diagnostic evaluation. Option D is incorrect as clinical breast exams alone do not replace mammography. In fact, the USPSTF currently recommends against relying on routine clinical breast exams for screening due to a lack of evidence showing mortality benefit when used without imaging.
5. A 16-year-old non-pregnant female has a positive vaginal swab for Chlamydia trachomatis. Her gonorrhea test is negative.
Answer: C
For a non-pregnant female with a positive vaginal swab for Chlamydia trachomatis, the CDC guidelines designate doxycycline 100 mg orally twice daily for seven days as the preferred first-line treatment. Option C correctly identifies this standard regimen. Option A suggests azithromycin, which was previously a first-line option but is now considered an alternative due to efficacy concerns, particularly for rectal infections, and is primarily reserved for pregnant patients or those with compliance issues. Option B uses levofloxacin, which is an acceptable alternative but not the preferred first-line agent for uncomplicated cases. Option D recommends ceftriaxone, which is the treatment for gonorrhea; however, this patient's gonorrhea test is negative, making cephalosporin therapy unnecessary and inappropriate. Always default to a seven-day course of doxycycline for uncomplicated chlamydia in non-pregnant adolescents to ensure optimal clearance.
6. A 28-year-old female requests preconception counseling. She desires another child within the year but is anxious because her prior pregnancy was complicated by spina bifida. Which folic acid supplementation strategy is indicated?
Answer: B
This patient is at high risk due to a prior pregnancy complicated by spina bifida, a type of neural tube defect. The standard of care for secondary prevention is high-dose supplementation with 4000 mcg (4 mg) of folic acid daily, starting at least one month before conception and continuing through the first trimester. Option B correctly identifies both the high-risk dose and the preconception timing. Option A offers the standard-risk dose, which is insufficient for this patient. Options C and D are incorrect because initiating supplementation after a missed menstrual period is too late; the neural tube closes by 28 days post-conception, meaning the critical developmental window has already passed.
7. A 20-year-old asymptomatic female presents for a routine exam. She reports having unprotected intercourse last night. Her vaginal pH is 5.5. The saline wet prep shows predominantly lactobacilli, a few squamous epithelial cells with distinct borders, and no motile organisms. The KOH prep is negative. How should the nurse practitioner interpret the elevated pH?
Answer: D
A normal vaginal pH is typically between 3.8 and 4.5. However, semen is alkaline with a pH around 7.2 to 8.0. Unprotected intercourse can temporarily raise the vaginal pH for up to 48 hours. The wet prep findings of normal vaginal flora (predominantly lactobacilli) and clear squamous epithelial cells rule out active vaginosis or vaginitis. Option D is the best interpretation of the isolated elevated pH. Option A is incorrect; early bacterial vaginosis would likely show a decrease in lactobacilli and the emergence of clue cells. Option B is incorrect; trichomoniasis would present with motile protozoa and significant white blood cells. Option C is incorrect; candidal vaginitis typically maintains a normal acidic pH and would show yeast forms on a KOH prep. Understanding environmental factors affecting pH prevents misdiagnosis.
8. A 28-year-old female presents for a well-woman exam. She notes a mild increase in clear discharge but denies odor or pruritus. Vaginal pH is 4.4. Microscopy shows squamous epithelial cells with distinct borders and abundant lactobacilli.
Answer: A
Normal vaginal flora is characterized by a pH of 3.8 to 4.5, clear to white discharge, and a predominance of lactobacilli. The presence of squamous epithelial cells with distinct borders rules out clue cells, which are the hallmark of dysbiosis. Documenting as normal physiologic vaginal flora is the correct action because all findings align with a healthy, balanced vaginal ecosystem. Initiating empiric treatment for bacterial vaginosis is incorrect because there are no signs of an anaerobic shift, such as a pH greater than 4.5 or clue cells. Performing a potassium hydroxide amine whiff test is unnecessary given the strictly normal pH and complete lack of odor. Collecting a swab for fungal culture analysis is unwarranted because the patient lacks typical symptoms of candidiasis, such as intense pruritus or thick, clumpy discharge.
9. A 35-year-old asymptomatic female requests genetic testing for breast cancer because a friend was recently diagnosed. The patient lacks any personal or family history of breast or ovarian cancer. How should the nurse practitioner evaluate this request ethically?
Answer: B
Beneficence involves acting in the patient's best interest, which includes preventing the harm of unnecessary testing, such as anxiety from false positives or incidental findings. While the patient is attempting to exercise healthcare autonomy by requesting the test, the NP must provide informed risk counseling to align with evidence-based practice. Option B balances these principles perfectly. Option A ignores the potential harms of inappropriate testing. Option C is overly paternalistic. Option D is an extreme and inappropriate clinical escalation.
10. A 48-year-old female scores positive on the Ontario Family History Assessment Tool due to a sister with bilateral breast cancer. She asks what happens next.
Answer: C
When a primary care provider administers a familial risk assessment tool and the result is positive, the standard of care is to refer the patient for specialized genetic counseling. Genetic counselors will then determine if actual genetic testing is appropriate. Option C is correct because counseling must precede any genetic testing to ensure informed consent and understanding of potential results. Option A is incorrect; while she may need enhanced screening, counseling is the immediate next step for the positive tool. Option B is premature without a confirmed mutation or separate risk calculation. Option D skips the mandatory counseling phase.
11. A 32-year-old pregnant female presents for her first prenatal visit at 10 weeks. She reports a negative HCV screen during her previous pregnancy two years ago. What is the appropriate intervention?
Answer: A
Guidelines recommend universal hepatitis C screening during every pregnancy, regardless of prior negative results. Option A is correct because the antibody test is the initial screening step. Option B is incorrect because screening should occur during the first prenatal visit. Option C is wrong because prior negative results do not exempt her from current screening. Option D is incorrect as RNA testing is reserved for confirming a positive antibody screen.
12. A 19-year-old pregnant patient presents for her initial comprehensive prenatal evaluation at 11 weeks gestation. She reports being in a monogamous relationship for two years and denies any history of sexually transmitted infections or genital lesions.
Answer: C
Universal screening for syphilis using a rapid plasma reagin or VDRL test is mandated for all pregnant women at the first prenatal visit to prevent congenital syphilis. Option C is correct because this screening is required regardless of perceived risk. Option A is incorrect because relying on a patient's reported monogamous relationship or lack of history misses asymptomatic infections. Option B is incorrect because waiting for symptoms defeats the purpose of early screening and risks severe fetal transmission. Option D is incorrect because early detection and treatment with penicillin in the first trimester are critical to preventing fetal morbidity.
13. A patient who is 14 weeks pregnant presents for a routine prenatal visit. Her clean-catch urine culture reveals 100,000 CFU/mL E. coli, though she reports no dysuria or frequency. Which of the following is the most appropriate action?
Answer: A
In pregnant patients, routine screening for asymptomatic bacteriuria is standard practice because physiological changes increase the risk of progression to pyelonephritis. The presence of 100,000 CFU/mL E. coli in a patient who is 14 weeks pregnant confirms asymptomatic bacteriuria, even though she has no dysuria or frequency. Treating this promptly with a safe antibiotic (Option A) prevents maternal and fetal complications like preterm labor. Option B is incorrect because delaying treatment to repeat the culture leaves the patient at risk for ascending infection. Option C is insufficient; while hydration is helpful, it does not eradicate the established bacteriuria. Option D is unnecessary because there are no signs of anatomical obstruction or complicated upper tract disease requiring imaging at this stage. Treatment is the definitive next step.
14. A 30-year-old female patient reports a foul-smelling, frothy yellow-green discharge. Microscopic evaluation of the vaginal fluid reveals motile flagellated organisms. Based on current CDC guidelines, which treatment plan should the nurse practitioner select?
Answer: A
Updated CDC guidelines recommend multidose oral metronidazole for women with trichomoniasis to significantly reduce recurrence rates. The two-gram single dose is no longer first-line for women due to higher treatment failure rates. Fluconazole is indicated for candidiasis, not trichomoniasis. Clindamycin is an alternative for bacterial vaginosis but is ineffective against Trichomonas.
15. A 35-year-old female with heavy menstrual bleeding presents with fatigue. Her CBC reveals a hemoglobin of 10.8 g/dL and an MCV of 79 fL. Which additional finding confirms iron deficiency as the primary etiology?
Answer: C
Heavy menstrual bleeding is a leading cause of iron deficiency anemia in premenopausal women. As iron stores become depleted, the body compensates by increasing transferrin production to maximize iron transport, resulting in an elevated TIBC. Concurrently, the decreased serum ferritin reflects the exhaustion of the body's iron reserves. This specific combination is the definitive laboratory hallmark of iron deficiency. Elevated serum ferritin and reduced TIBC indicate anemia of chronic disease, where iron is sequestered due to inflammation rather than truly deficient. Normal serum ferritin with elevated TIBC is an unlikely physiological combination, as ferritin drops before TIBC rises significantly. Decreased serum ferritin and reduced TIBC can occasionally occur in mixed anemia states, such as concurrent iron deficiency and severe protein-calorie malnutrition, but it is not the classic presentation of uncomplicated iron loss.
