Examkin

Soru

Zorluk: Çok zorGastroenterology and Hepatology

A 45-year-old man with a history of alcohol use disorder is admitted to the hospital with acute-onset, severe epigastric pain radiating to his back. His serum lipase is markedly elevated at 4,500 U/L4,500 \text{ U/L}. Over the next four weeks, his hospital course is complicated by the development of infected necrotizing pancreatitis. Based on the current standard of care and the evidence-based 'step-up approach' for necrotizing pancreatitis, arrange the following interventions in the most appropriate chronological sequence from his initial presentation to his definitive management.

  1. 1Initiate goal-directed intravenous fluid resuscitation with lactated Ringer's solution
  2. 2Obtain a contrast-enhanced computed tomography (CT) scan of the abdomen
  3. 3Administer broad-spectrum intravenous antibiotics (e.g., meropenem)
  4. 4Place an image-guided percutaneous or endoscopic transluminal pigtail catheter
  5. 5Perform a minimally invasive video-assisted retroperitoneal debridement (VARD)

Cevap

The correct chronological sequence is: 1) Initiate goal-directed intravenous fluid resuscitation, 2) Obtain a contrast-enhanced CT scan of the abdomen, 3) Administer broad-spectrum intravenous antibiotics, 4) Place an image-guided percutaneous or endoscopic catheter, and 5) Perform a minimally invasive necrosectomy (VARD).
This sequence adheres to the evidence-based management of severe acute pancreatitis. Initial priority is hemodynamic stabilization (IV fluids). Necrosis is best evaluated at 72-96 hours (CT). Infection typically occurs later, prompting therapeutic, not prophylactic, antibiotics. If source control is required, the step-up approach mandates minimally invasive catheter drainage prior to progressing to necrosectomy.

Adım Adım Çözüm

1
Address the initial hemodynamic derangements of acute pancreatitis.
Aggressive fluid resuscitation is administered immediately.
Early volume expansion is crucial to prevent pancreatic hypoperfusion and subsequent necrosis.
2
Determine the appropriate timing to assess for local complications.
Contrast-enhanced CT is scheduled for 72-96 hours after admission.
Pancreatic necrosis takes several days to fully demarcate; early imaging is often falsely reassuring.
3
Respond to clinical deterioration in the later phases (weeks 2-4).
Broad-spectrum antibiotics are initiated.
New-onset fever or sepsis weeks into the course suggests infected necrosis, which requires targeted antimicrobial therapy rather than early prophylaxis.
4
Select the initial interventional modality for infected necrosis.
Percutaneous or endoscopic transluminal drainage is performed.
The 'step-up approach' dictates that minimally invasive catheter drainage should precede any solid tissue debridement.
5
Plan for definitive management if initial intervention fails.
Minimally invasive necrosectomy (VARD) is performed.
Direct debridement is reserved for cases refractory to simple catheter drainage, minimizing surgical trauma in critically ill patients.

Anahtar Kavram

The management of acute necrotizing pancreatitis follows a strict chronological protocol: immediate fluid resuscitation, delayed imaging (72-96 hours) for necrosis assessment, targeted antibiotics for confirmed or suspected infection, and a 'step-up' interventional approach starting with catheter drainage before progressing to necrosectomy.
Bu soruyu puanla

Konular

Gastroenterology and Hepatology

Bu konudan daha fazla soru