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Zorluk: OrtaDiagnostic Workup and Test Sequencing

A 55-year-old female presents to the emergency department complaining of sudden-onset, severe epigastric pain that radiates directly to her back. The pain began abruptly two hours ago and is accompanied by multiple episodes of intractable, non-bilious emesis. She has no history of alcohol consumption and takes no routine medications. Her temperature is 37.8°C (100.0°F), pulse is 112/min, and blood pressure is 138/86 mmHg. Abdominal examination demonstrates marked epigastric tenderness with voluntary guarding, but no rebound or rigidity. Bowel sounds are hypoactive. Which of the following diagnostic investigations are the most appropriate NEXT steps in the evaluation of this patient? (Select exactly 2 options)

  1. Serum lipase concentrationCevap
  2. Right upper quadrant transabdominal ultrasoundCevap
  3. C
    Contrast-enhanced computed tomography of the abdomen
  4. D
    Endoscopic retrograde cholangiopancreatography
  5. E
    Hepatobiliary iminodiacetic acid scintigraphy

Cevap

The most appropriate initial diagnostic steps are ordering a serum lipase concentration and performing a right upper quadrant transabdominal ultrasound.
The diagnosis of acute pancreatitis requires two of the following three criteria: typical abdominal pain, serum lipase or amylase greater than three times the upper limit of normal, and characteristic findings on cross-sectional imaging. Because this patient presents with a highly classic history and physical exam, obtaining a serum lipase concentration will biochemically confirm the diagnosis if appropriately elevated. At the same time, it is mandatory to sequence a right upper quadrant transabdominal ultrasound as the initial imaging study. Gallstones are the leading cause of acute pancreatitis worldwide, and an ultrasound provides a highly sensitive, non-invasive, and cost-effective method to detect cholelithiasis and biliary duct dilation, which would guide subsequent management.

Adım Adım Çözüm

1
Recognize the classic clinical presentation.
The patient's sudden, severe epigastric pain radiating to the back with emesis strongly suggests acute pancreatitis.
Identifying the suspected primary diagnosis dictates the specific sequence of subsequent confirmatory and etiologic testing.
2
Select the optimal biochemical test for confirmation.
Serum lipase is chosen over other markers.
A serum lipase level greater than three times the upper limit of normal satisfies one of the major criteria required to establish the diagnosis of acute pancreatitis.
3
Determine the necessary initial imaging to establish etiology.
A right upper quadrant transabdominal ultrasound is selected.
Since biliary tract disease (gallstones) is the most common cause of acute pancreatitis, an ultrasound is the safest, fastest, and most cost-effective first step to evaluate the gallbladder and biliary tree.

Anahtar Kavram

The initial diagnostic sequencing for suspected acute pancreatitis relies on concurrent biochemical confirmation (serum lipase) and non-invasive etiologic screening (right upper quadrant ultrasound), while avoiding premature advanced imaging.
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Diagnostic Workup and Test Sequencing

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