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Difficulty: EasyDiagnostic Workup and Test Sequencing

Match each clinical presentation with the most appropriate next step in diagnostic testing.

  • A 42-year-old woman with fever, jaundice, and acute right upper quadrant abdominal pain.Right upper quadrant abdominal ultrasound
  • A 70-year-old woman with new-onset localized headache, jaw pain with chewing, and transient vision loss.Erythrocyte sedimentation rate (ESR)
  • A 30-year-old man with sudden-onset 'worst headache of life' and a negative non-contrast head CT scan.Lumbar puncture
  • A 55-year-old man with chronic burning epigastric pain, new-onset progressive dysphagia, and recent unintentional weight loss.Esophagogastroduodenoscopy (EGD)

Answer

1. Jaundice/RUQ pain -> Ultrasound
2. Jaw claudication/vision loss -> ESR
3. 'Worst headache' with negative CT -> Lumbar puncture
4. Dyspepsia with alarm symptoms -> EGD
Each diagnostic test selected represents the standard-of-care initial investigation for the given classic presentation, minimizing unnecessary delays or inappropriate invasive procedures.

Step-by-Step Solution

1
Analyze each clinical presentation to identify the most likely suspected diagnosis.
Patient 1 has suspected cholangitis; Patient 2 has suspected giant cell arteritis; Patient 3 has suspected subarachnoid hemorrhage; Patient 4 has suspected gastric or esophageal malignancy.
Establishing the preliminary diagnosis dictates the algorithmic sequence of testing.
2
Select the guideline-recommended initial or definitive next test based on the suspected diagnosis.
Ultrasound for biliary pathology, ESR for temporal arteritis screening, Lumbar Puncture for CT-negative SAH, and EGD for upper GI alarm symptoms.
Test sequencing prioritizes high-yield, appropriately invasive tests based on pre-test probability and clinical urgency.

Key Concept

Appropriate selection of initial diagnostic testing based on classic clinical presentations.
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Topics

Diagnostic Workup and Test Sequencing

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