USA SP26 FNP CPB Univ Predictor Exam
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insidious onset and chronic progressive course.
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a new anticholinergic medication.
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dehydration and/or malnutrition.
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recent changes in surroundings and routines.
Explanation
Correct Answer: (A) insidious onset and chronic progressive course.
Delirium is characterized by an acute onset and a fluctuating course, not an insidious or chronically progressive one. An insidious onset and chronic progressive course are hallmark features of dementia, not delirium. This patient's behavioral changes following a major environmental disruption are more suggestive of an acute confusional state, but the described pattern of slow, gradual onset over time would not be consistent with delirium's typical presentation.
Why Other Options are Incorrect:
B. A new anticholinergic medication — Anticholinergic medications are a well-established precipitating factor for delirium, particularly in elderly patients, making this entirely consistent with delirium.
C. Dehydration and/or malnutrition — Both dehydration and malnutrition are common and recognized precipitating factors for delirium in older adults and are fully consistent with a delirium diagnosis.
D. Recent changes in surroundings and routines — Environmental disruption, such as relocation from a long-term familiar home, is a known precipitating factor for delirium in elderly patients and is consistent with this diagnosis.
A 17-year-old patient presents with lacerations on his right hand, over the knuckle areas. The patient reports being in a fight over the weekend. Erythema, swelling, and tenderness are visible. This is MOST likely:
- A crush injury.
- Erythroderma.
- A human bite injury.
- Boxer's fracture.
Explanation
Explanation: Correct Answer: (C) A human bite injury.
Lacerations over the knuckles in the context of a fight are classic for "fight bite" — a human bite injury sustained when a fist strikes another person's teeth. These are highly prone to serious infection due to oral flora and must be treated aggressively with antibiotics and wound care.
Why Other Options are Incorrect:
A. A crush injury typically results from blunt compression and would not specifically present with lacerations over the knuckles in a fight context.
B. Erythroderma is a widespread skin condition involving generalized redness and is unrelated to traumatic lacerations.
D. Boxer's fracture refers to a fracture of the fifth metacarpal neck and involves bone injury rather than lacerations, though it can co-exist; the primary concern here is the laceration pattern suggesting a bite.
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Chlamydia.
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Staphylococcus aureus.
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Escherichia coli.
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Klebsiella aerogenes.
Explanation
Correct Answer: (C) Escherichia coli.
In men over 35 years of age who do not engage in high-risk sexual behaviors, epididymitis is most commonly caused by enteric gram-negative organisms, with Escherichia coli being the most frequent culprit. In this age group, epididymitis is often associated with urinary tract infections, benign prostatic hyperplasia, or urinary tract instrumentation rather than sexually transmitted infections.
Why Other Options are Incorrect:
A - Chlamydia: Chlamydia trachomatis is the most common cause of epididymitis in sexually active young men under 35 years of age with high-risk sexual behaviors. In a 55-year-old without such behaviors, it is not the most likely organism.
B - Staphylococcus aureus: While Staphylococcus aureus can cause epididymo-orchitis in certain contexts (such as hematogenous spread), it is not the most common causative organism for epididymitis in older males without sexual risk factors.
D - Klebsiella aerogenes: Klebsiella species can cause urinary tract and genitourinary infections, but E. coli remains the predominant enteric organism associated with epididymitis in older, non-sexually active males.
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an anterior cruciate ligament tear.
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a meniscal tear.
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a medial collateral ligament sprain.
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a posterior cruciate ligament tear.
Explanation
Correct Answer: (B) a meniscal tear.
McMurray's test is specifically used to assess for meniscal tears. A positive result — characterized by a palpable or audible click with pain along the joint line during knee flexion and rotation — is highly indicative of a meniscal injury. The negative posterior drawer and negative Lachman tests effectively rule out posterior and anterior cruciate ligament injuries respectively, making a meniscal tear the most consistent diagnosis with this examination pattern.
Why Other Options are Incorrect:
A. An anterior cruciate ligament tear — ACL tears are assessed with the Lachman test and the anterior drawer test, both of which were negative in this patient, making an ACL tear unlikely.
C. A medial collateral ligament sprain — MCL injuries are assessed with valgus stress testing, which was not described in this examination. A positive McMurray's test does not suggest MCL involvement.
D. A posterior cruciate ligament tear — PCL tears are evaluated with the posterior drawer test, which was negative in this patient, effectively ruling out a PCL injury.
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one-half ounce in weight and one-eighth inch in length per week.
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two ounces in weight and one-fourth inch in length per week.
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5-7 ounces of weight per week and one-half to 1 inch in length per month.
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8-10 ounces of weight per week and one-half inch in length per month.
Explanation
Correct Answer: (C) 5-7 ounces of weight per week and one-half to 1 inch in length per month.
During the first 6 months of life, infants typically gain approximately 5–7 ounces (140–200 grams) per week and grow about half an inch to 1 inch in length per month. This is consistent with the expected doubling of birth weight by approximately 4–6 months of age and represents well-established pediatric growth norms.
Why Other Options are Incorrect:
A - One-half ounce per week and one-eighth inch per month: This rate is far too slow and would represent inadequate growth, consistent with failure to thrive rather than normal infant development.
B - Two ounces per week and one-fourth inch per week: Two ounces per week is below the expected normal range of 5–7 ounces per week for the first 6 months, indicating insufficient weight gain.
D - 8-10 ounces per week and one-half inch per month: While 8–10 ounces per week may be seen in some rapidly growing infants, it exceeds the average expected range and is not the standard cited for normal growth patterns in the first 6 months.
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impetigo of the left breast.
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a psoriatic lesion.
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inflammatory breast cancer.
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mammary Paget disease.
Explanation
Correct Answer: (D) Mammary Paget disease.
Mammary Paget disease is a rare form of breast cancer that presents as a scaly, erythematous, crusty, thickened plaque on the nipple that progressively extends to the surrounding areola. It is caused by Paget cells (adenocarcinoma cells) infiltrating the epidermis of the nipple. This characteristic nipple-areolar presentation in a postmenopausal woman requires urgent biopsy and evaluation for underlying breast malignancy.
Why Other Options are Incorrect:
A - Impetigo of the left breast: Impetigo is a superficial bacterial skin infection typically presenting with honey-colored crusted lesions in children. It does not produce the chronic, progressive, thickened plaque on the nipple described here.
B - A psoriatic lesion: Psoriasis can affect the breast skin, but it typically presents as well-demarcated silvery scaly plaques on extensor surfaces and does not specifically target the nipple-areolar complex in the progressive manner described.
C - Inflammatory breast cancer: Inflammatory breast cancer presents with rapid breast enlargement, erythema, warmth, and peau d'orange skin changes affecting the breast skin diffusely. It does not typically present as a scaly plaque specifically localized to the nipple and areola.
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can be a precancerous condition.
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arises from an imbalance of estrogen and androgens.
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occurs more often in men with lean body types.
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is associated with hypergonadism.
Explanation
Correct Answer: (B) arises from an imbalance of estrogen and androgens.
Gynecomastia results from an imbalance between estrogen and androgen activity in breast tissue, leading to benign proliferation of glandular tissue in males. In a well-muscled young male, this can be associated with anabolic steroid use, which disrupts the estrogen-to-androgen ratio. Other causes include medications, liver disease, hypogonadism, and physiological hormonal shifts during puberty or aging.
Why Other Options are Incorrect:
A. Can be a precancerous condition — Gynecomastia is a benign condition and is not considered precancerous. Male breast cancer is a separate and distinct entity that is not caused by gynecomastia.
C. Occurs more often in men with lean body types — Gynecomastia is actually more associated with increased adipose tissue (which converts androgens to estrogens via aromatization) and is not specifically linked to lean body types.
D. Is associated with hypergonadism — Gynecomastia is associated with hypogonadism (low androgen levels), not hypergonadism. Excess androgen from hypergonadism would typically suppress estrogen-driven breast tissue growth.
A 2-year-old female with red hair and a fair complexion has a yellowish skin tone. Neither her eyes nor her mucous membranes are discolored, and no other abnormal findings are present. The nurse practitioner can distinguish jaundice from skin staining by observing:
- That the discoloration is concentrated over the palms and soles.
- A slight yellowish tint to the fingernail beds.
- That the skin discoloration is more prominent on the chest.
- Urine that is yellowish-orange in appearance.
Explanation
Explanation:
Correct Answer: (A) That the discoloration is concentrated over the palms and soles.
Carotenemia — a benign condition common in young children who consume large amounts of carotene-rich foods — causes yellowish skin discoloration concentrated on the palms, soles, and nasolabial folds, while sparing the sclerae and mucous membranes. Jaundice, in contrast, involves yellowing of the sclerae and mucous membranes due to elevated bilirubin. The distribution over the palms and soles without scleral involvement distinguishes carotenemia from true jaundice.
Why Other Options are Incorrect:
B. Yellowing of the fingernail beds is not a reliable distinguishing feature between jaundice and carotenemia and is not a standard clinical differentiator.
C. Skin discoloration being more prominent on the chest is not a distinguishing characteristic of either carotenemia or jaundice; the palms and soles are the key locations for carotenemia.
D. Yellowish-orange urine is associated with true jaundice due to elevated bilirubin excretion, and would actually suggest jaundice rather than help distinguish carotenemia from it.
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arrange a surgical consult for the circumcision.
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explain that an infant with hypospadias should not be circumcised.
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explain that a circumcision will be performed when the infant is 6 months old.
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schedule an ultrasound of the penis to evaluate for other abnormalities prior to referral.
Explanation
Correct Answer: (B) Explain that an infant with hypospadias should not be circumcised.
In infants with hypospadias, circumcision is contraindicated because the foreskin tissue is often used by pediatric urologists and surgeons in the corrective repair of the hypospadias. Removing the foreskin during circumcision would eliminate this valuable tissue needed for the surgical reconstruction. The parents should be counseled accordingly and referred to a pediatric urologist for surgical planning.
Why Other Options are Incorrect:
A - Arrange a surgical consult for circumcision: A surgical consult is appropriate, but it should be for hypospadias repair, not circumcision. Arranging a consult specifically for circumcision would be inappropriate given the contraindication.
C - Circumcision at 6 months: There is no age at which routine circumcision becomes appropriate in a child with hypospadias. The foreskin must be preserved for potential use in surgical repair regardless of age.
D - Schedule an ultrasound prior to referral: While associated genitourinary anomalies can occur with hypospadias, the immediate priority is to advise against circumcision and refer to a pediatric urologist. Ordering an ultrasound independently before referral is not the most appropriate initial action.
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multivitamin with iron.
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low-dose aspirin.
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melatonin.
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vitamin B12.
Explanation
Correct Answer: (B) Low-dose aspirin
In secondary polycythemia due to obstructive sleep apnea, the increased red blood cell mass raises blood viscosity and thromboembolic risk. Low-dose aspirin is recommended to reduce the risk of thrombotic events such as stroke and MI, which is especially important given this patient's history of hypertension and hyperlipidemia.
Why Other Options are Incorrect:
A - Multivitamin with iron: Iron supplementation would worsen polycythemia by further stimulating red blood cell production.
B - Melatonin: While melatonin may aid sleep, it does not address the hematologic complications of secondary polycythemia.
D - Vitamin B12: B12 is used in deficiency states; supplementing here would not benefit and could potentially stimulate further erythropoiesis.
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