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Difficulty: Very hardGastrointestinal and Abdominal Surgery

A 76-year-old man is brought to the emergency department from a skilled nursing facility due to severe, intractable vomiting and diffuse abdominal pain for the past 48 hours. He has a history of an open appendectomy 40 years ago and atrial fibrillation, for which he takes warfarin. Over the last 4 hours, the nursing staff noted he became progressively lethargic and confused. On arrival, his temperature is 38.8°C (101.8°F), pulse is 138/min, blood pressure is 78/45 mmHg, and respirations are 28/min. Physical examination reveals an altered, diaphoretic man. The abdomen is markedly distended, rigidly board-like, and exquisitely tender with diffuse rebound tenderness and involuntary guarding. Bowel sounds are absent. Laboratory studies show a leukocyte count of 24,000/mm³, a serum lactate of 7.8 mmol/L, and an INR of 3.6. Arrange the following management steps in the most appropriate chronological sequence for this patient.

  1. 1Perform endotracheal intubation for airway protection and ventilatory support.
  2. 2Establish large-bore intravenous access and initiate aggressive isotonic crystalloid resuscitation.
  3. 3Administer intravenous broad-spectrum antibiotics and 4-factor prothrombin complex concentrate.
  4. 4Transfer to the operating room for an emergent exploratory laparotomy and bowel resection without primary anastomosis.
  5. 5Admit to the surgical intensive care unit for physiological optimization prior to a planned second-look laparotomy.

Answer

The correct sequence prioritizes the ABCs of resuscitation (Airway, then Circulation), followed by critical medical adjuncts (antibiotics and rapid coagulopathy reversal), definitive damage-control surgery, and finally ICU admission for a second-look operation.
The management of a strangulated small bowel obstruction complicated by septic shock and generalized peritonitis requires a highly disciplined adherence to the ABCs of resuscitation and damage-control surgical principles. The correct chronological sequence is: (1) Airway protection via intubation due to altered mental status and high aspiration risk; (2) Circulation support via aggressive isotonic fluid resuscitation; (3) Medical adjuncts including rapid warfarin reversal with PCC and empiric broad-spectrum antibiotics; (4) Emergent damage-control laparotomy (resection of frankly necrotic bowel without primary anastomosis) to remove the source of sepsis without prolonging the operation; and finally (5) ICU admission for continued physiological resuscitation (correcting the lethal triad of acidosis, hypothermia, and coagulopathy) and a planned second-look operation in 24-48 hours to assess remaining bowel viability and potentially restore bowel continuity.

Step-by-Step Solution

1
Assess the patient's stability, mental status, and airway.
The patient is in mixed septic and hypovolemic shock with altered mental status and intractable vomiting, indicating an inability to protect his airway.
Airway protection takes precedence over all other interventions in a critically ill patient, especially when aspiration risk is extremely high.
2
Address the patient's profound hemodynamic collapse.
Large-bore IV access and aggressive isotonic fluid resuscitation are initiated.
Restoring circulating volume (Circulation) is the immediate next priority in trauma and critical care principles to prevent cardiovascular collapse.
3
Prepare the patient for emergent surgical intervention by addressing reversible coagulopathy and active infection.
Prothrombin complex concentrate (PCC) and broad-spectrum antibiotics are administered.
Operating on a patient with an INR of 3.6 carries a prohibitive bleeding risk; PCC provides rapid, low-volume reversal compared to FFP. Antibiotics treat the underlying intra-abdominal sepsis.
4
Perform definitive surgical management for the acute surgical abdomen.
Emergent exploratory laparotomy with damage-control resection (leaving the bowel in discontinuity without an anastomosis) is performed.
Peritonitis requires immediate surgical exploration. In profound shock, damage-control principles dictate minimizing operative time and avoiding high-risk anastomoses.
5
Plan for postoperative critical care and definitive gastrointestinal reconstruction.
The patient is admitted to the ICU for continued resuscitation and a planned second-look laparotomy.
The abdomen is temporarily closed, and the patient must be physiologically stabilized (correction of acidosis, hypothermia, and coagulopathy) before bowel continuity can be restored safely.

Key Concept

The management of a strangulated small bowel obstruction with peritonitis and shock strictly follows ABC priorities, requiring immediate airway protection, fluid resuscitation, coagulopathy reversal, and emergent damage-control laparotomy without delaying for imaging.
Estimated Time:2m 0s
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Topics

Gastrointestinal and Abdominal Surgery

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