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Zorluk: OrtaDiagnostic Workup and Test Sequencing

A 48-year-old man comes to the emergency department with a 12-hour history of severe, constant epigastric pain that radiates to his back. The pain is accompanied by intractable nausea and non-bilious vomiting. He has a 10-year history of heavy alcohol use but states his last drink was 2 days ago. His medical history is otherwise unremarkable. Temperature is 37.8°C (100.0°F), blood pressure is 142/88 mmHg, pulse is 115/min, and respirations are 20/min. Physical examination reveals a distressed patient leaning forward on the stretcher. Abdominal examination shows marked epigastric tenderness to deep palpation with guarding, but no rebound tenderness or rigidity. Bowel sounds are hypoactive. Which of the following are the most appropriate initial steps in the diagnostic workup for this patient? (Select the 2 correct answers)

  1. Serum lipase concentrationCevap
  2. Right upper quadrant abdominal ultrasoundCevap
  3. C
    Computed tomography of the abdomen with intravenous contrast
  4. D
    Endoscopic retrograde cholangiopancreatography
  5. E
    Magnetic resonance cholangiopancreatography

Cevap

The most appropriate initial steps are obtaining a serum lipase concentration and performing a right upper quadrant abdominal ultrasound.
The clinical presentation of acute, severe epigastric pain radiating to the back accompanied by nausea and vomiting is highly suspicious for acute pancreatitis. The diagnosis is established by the presence of two of the following three criteria: characteristic abdominal pain, serum lipase or amylase elevated to at least three times the upper limit of normal, and characteristic findings on cross-sectional imaging. Therefore, measuring the serum lipase concentration is an essential first step. Additionally, current guidelines recommend that a right upper quadrant abdominal ultrasound be performed in all patients with suspected acute pancreatitis upon presentation. This screens for gallstones, which is a leading cause of the condition and can rapidly dictate further management (e.g., the need for early cholecystectomy or ERCP). Both tests should be ordered concurrently as part of the baseline workup.

Adım Adım Çözüm

1
Identify the most likely diagnosis based on the clinical presentation.
The patient is likely suffering from acute pancreatitis.
He presents with classic symptoms including acute-onset, severe epigastric pain radiating to the back, accompanied by nausea, vomiting, and a history of significant alcohol use.
2
Determine the diagnostic criteria for the suspected condition.
Diagnosis requires two of three criteria: characteristic abdominal pain, serum lipase or amylase >3 times the upper limit of normal, and characteristic imaging findings.
Standard guidelines utilize this triad to confirm acute pancreatitis.
3
Select the appropriate non-invasive initial diagnostic tests that fulfill criteria and check for common etiologies.
Serum lipase concentration and a right upper quadrant abdominal ultrasound should be ordered.
Lipase confirms the biochemical criterion, while ultrasound evaluates for gallstones, which is a common, actionable etiology of pancreatitis that dictates subsequent management.

Anahtar Kavram

The initial diagnostic workup of suspected acute pancreatitis involves establishing the diagnosis with a serum lipase level and evaluating for a biliary etiology using right upper quadrant abdominal ultrasound.
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Diagnostic Workup and Test Sequencing

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