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Section 1: Assessment & Diagnostic Reasoning (Questions 1-20)
Q1. A 42-year-old male presents with sudden onset of severe, tearing chest pain
radiating to his back. Vital signs reveal BP 180/110 mmHg in the right arm and
140/90 mmHg in the left arm. The patient also reports new-onset hoarseness. Which
diagnostic study is the MOST appropriate next step?
A. Transthoracic echocardiogram
B. Chest X-ray
C. CT angiography of the chest [CORRECT]
D. D-dimer assay
Rationale: CT angiography is the gold standard for diagnosing aortic dissection,
providing visualization of the intimal flap, true/false lumens, and branch vessel
involvement. The tearing chest/back pain, pulse deficit (BP differential >20 mmHg
between arms), and widened mediastinum on CXR are classic red flags. TTE may miss
ascending aortic involvement; D-dimer lacks specificity. ANCC FNP competency:
Advanced pathophysiology recognition and urgent diagnostic reasoning. Evidence-
based: AHA/ACC guidelines recommend CTA for suspected acute aortic syndromes.
Correct Answer: C
Q2. A 28-year-old female presents with acute lower abdominal pain, vaginal spotting,
and a positive urine pregnancy test. Transvaginal ultrasound reveals an empty uterus
with a 3.2 cm adnexal mass and moderate free fluid in the cul-de-sac. Her BP is 88/52
mmHg and HR 118 bpm. What is the PRIORITY action?
A. Administer methotrexate intramuscularly
B. Obtain serial quantitative β-hCG levels in 48 hours
C. Immediate surgical consultation for suspected ruptured ectopic pregnancy
,[CORRECT]
D. Perform dilation and curettage
Rationale: Hemodynamic instability (hypotension, tachycardia), empty uterus,
adnexal mass, and free fluid constitute a surgical emergency consistent with ruptured
ectopic pregnancy. Methotrexate is contraindicated in unstable patients; serial β-hCG
is inappropriate in acute hemorrhage. D&C would not address the extrauterine
gestation. ANCC FNP competency: Critical clinical judgment in life-threatening
reproductive emergencies. Evidence-based: ACOG guidelines mandate immediate
surgical intervention for hemodynamically unstable ectopic pregnancy.
Correct Answer: C
Q3. A 65-year-old male reports the "worst headache of my life" that peaked within
60 seconds. He has nuchal rigidity, photophobia, and a Glasgow Coma Scale score of
13. Which is the BEST initial diagnostic step?
A. Lumbar puncture immediately
B. Non-contrast head CT [CORRECT]
C. MRI brain with contrast
D. CTA of the head and neck
Rationale: Non-contrast head CT is the first-line imaging for suspected
subarachnoid hemorrhage (SAH), detecting >95% of cases within 6 hours. The
thunderclap headache, meningismus, and altered mental status are classic. LP is
reserved for CT-negative cases >6 hours from onset. MRI is less sensitive acutely;
CTA follows CT confirmation. ANCC FNP competency: Neurological emergency
assessment and sequential diagnostic reasoning. Evidence-based: AHA/ASA
guidelines recommend NCCT as initial study for suspected aneurysmal SAH.
Correct Answer: B
,Q4. A 19-year-old male presents with acute scrotal pain of 4 hours duration, nausea,
and vomiting. Physical examination reveals a high-riding, horizontally lie testis with
absent cremasteric reflex. Which action is MOST appropriate?
A. Prescribe antibiotics and schedule follow-up in 24 hours
B. Order scrotal ultrasound and await results before intervention
C. Immediate manual detorsion attempt and emergent urology consultation
[CORRECT]
D. Administer analgesics and observe for 6 hours
Rationale: Testicular torsion is a surgical emergency requiring intervention within 6
hours for testicular salvage. The acute onset, absent cremasteric reflex, high-riding
testis, and horizontal lie are pathognomonic. Manual detorsion should be attempted
while arranging emergent surgery; ultrasound should not delay treatment. Antibiotics
treat epididymitis, not torsion. ANCC FNP competency: Urological emergency
recognition and time-critical intervention. Evidence-based: AUA guidelines
emphasize immediate surgical exploration; manual detorsion is temporizing.
Correct Answer: C
Q5. A 55-year-old female presents with bilateral leg weakness, saddle anesthesia,
urinary retention (post-void residual 450 mL), and fecal incontinence of 8 hours
duration. She has chronic low back pain. Which is the MOST appropriate immediate
action?
A. Oral corticosteroids and outpatient MRI in 3 days
B. Urgent MRI of the lumbosacral spine and neurosurgical consultation [CORRECT]
C. Lumbar puncture to rule out Guillain-Barré syndrome
D. Initiate physical therapy and schedule follow-up
Rationale: Cauda equina syndrome is a neurosurgical emergency. Bilateral leg
weakness, saddle anesthesia, urinary retention (>300 mL PVR), fecal incontinence,
and loss of anal tone require emergent MRI and surgical decompression within 48
hours. LP is contraindicated with mass effect; steroids/PT delay definitive care. ANCC
FNP competency: Red flag recognition in neurological emergencies. Evidence-based:
, NICE/AAOS guidelines mandate urgent MRI and surgical consultation for acute
cauda equina syndrome.
Correct Answer: B
Q6. A 3-year-old child presents with fever (39.2°C), nuchal rigidity, irritability, and a
positive Kernig sign. The mother reports the child has been lethargic for 12 hours.
Which is the FIRST step in management?
A. Administer IV antibiotics after blood cultures, then perform lumbar puncture
B. Perform lumbar puncture immediately, then administer antibiotics
C. Obtain head CT before lumbar puncture due to altered mental status
D. Administer empiric IV antibiotics and obtain blood cultures; perform LP if no
contraindications [CORRECT]
Rationale: In suspected bacterial meningitis, empiric antibiotics should not be
delayed. Blood cultures are obtained first, antibiotics administered within 30 minutes,
and LP performed unless contraindicated (papilledema, focal deficits,
immunocompromise, history of CNS disease). Head CT before LP is reserved for
specific red flags; antibiotics should precede or accompany LP. ANCC FNP
competency: Pediatric infectious emergency management and antibiotic stewardship.
Evidence-based: IDSA guidelines recommend immediate empiric therapy; LP can be
deferred if clinical instability but should not delay antibiotics.
Correct Answer: D
Q7. A 45-year-old male with a history of hypertension presents with acute tearing
chest pain. His chest X-ray shows a widened mediastinum (>8 cm). Which additional
finding would MOST strongly support aortic dissection?
A. ST-elevation in leads V1-V4 on ECG
B. Pulse deficit >20 mmHg between upper extremities [CORRECT]
C. Pleural effusion on the right side
D. Elevated troponin I level