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Zorluk: Çok zorGastrointestinal and Abdominal Surgery

An 82-year-old woman is evaluated in the emergency department for a 4-day history of progressively worsening, colicky abdominal pain accompanied by nausea and feculent vomiting. Her medical history includes hypertension, osteoarthritis, and moderate dementia. She lives with her daughter, who is her legally appointed healthcare proxy. Her estranged son recently arrived at the hospital and has been demanding to direct her medical care.

Vitals:
Temperature: 37.6∘C37.6^\circ\text{C} (99.7∘F99.7^\circ\text{F})
Heart rate: 105/min105/\text{min}
Blood pressure: 110/70 mm Hg110/70 \text{ mm Hg}

Physical examination reveals a distended and tympanitic abdomen with high-pitched bowel sounds. There is mild, diffuse tenderness to palpation but no guarding, rigidity, or rebound tenderness.

Laboratory studies:
Leukocytes: 11,500/mm311,500/\text{mm}^3
Lactate: 1.6 mmol/L1.6 \text{ mmol/L}
Liver function tests: Within normal limits

A computed tomography scan of the abdomen and pelvis without contrast reveals dilated loops of small bowel up to the terminal ileum, air in the biliary tree, and a 3.5-cm3.5\text{-cm} radiopaque, calcified mass impacted in the distal ileum. The colon is decompressed.

The son demands that the medical team transition her to comfort care, stating, 'She is too frail for any surgery, and I am the oldest child, so I make the decisions.' The daughter states, 'She has excellent quality of life at home. I want whatever is medically necessary to relieve this blockage.'

Which of the following is the most appropriate next step in management?

  1. A
    Nasogastric tube decompression, intravenous fluids, and serial examinations
  2. B
    Exploratory laparotomy with enterolithotomy, cholecystectomy, and biliary fistula closure
  3. Exploratory laparotomy and enterolithotomy aloneCevap
  4. D
    Intravenous antibiotics, nasogastric decompression, and transition to comfort care
  5. E
    Endoscopic retrograde cholangiopancreatography with stone extraction

Cevap

The most appropriate next step is exploratory laparotomy and enterolithotomy alone, respecting the designated proxy's decision for surgical intervention while minimizing operative morbidity.
The patient presents with classic findings of gallstone ileus, characterized by the Rigler triad on imaging: small bowel obstruction, pneumobilia (air in the biliary tree), and an ectopic radiopaque gallstone. Gallstone ileus occurs when a large gallstone erodes through the inflamed gallbladder wall directly into the adjacent bowel (usually the duodenum), creating a cholecystoenteric fistula. The stone travels distally and typically impacts at the narrowest portion of the small intestine, the terminal ileum/ileocecal valve. Because this is a fixed mechanical obstruction, conservative management will fail. The surgical standard of care for gallstone ileus in elderly or frail patients is an enterolithotomy alone (surgical extraction of the stone from the bowel). A 'one-stage procedure' involving enterolithotomy, cholecystectomy, and fistula closure is associated with high mortality and should be avoided in this demographic. Ethically, the medical team must obtain consent from the legally appointed healthcare proxy (the daughter), whose decisions override those of other family members.

Adım Adım Çözüm

1
Identify the primary diagnosis based on clinical and radiographic findings.
The patient has a mechanical small bowel obstruction characterized by the Rigler triad on CT scan: pneumobilia, small bowel obstruction, and an ectopic gallstone in the terminal ileum. This confirms the diagnosis of gallstone ileus.
Accurate diagnosis is required to determine the necessity of surgical versus medical management.
2
Determine the optimal surgical approach for the diagnosis in the context of the patient's demographics.
In an elderly, frail patient, the primary life-threatening issue is the bowel obstruction. The surgical priority is enterolithotomy (opening the bowel to remove the stone) alone. Performing a simultaneous cholecystectomy and fistula repair (a one-stage procedure) carries an unacceptably high mortality rate.
Damage control principles apply; the goal is to resolve the acute surgical emergency while minimizing operative time and physiological stress.
3
Resolve the ethical conflict regarding consent.
The daughter is the legally appointed healthcare proxy. Her decision for medical intervention supersedes the son's demands.
Medical teams are legally and ethically bound to follow the directives of the established healthcare proxy when the patient lacks capacity, regardless of family hierarchy or disagreements.

Anahtar Kavram

Management of gallstone ileus and healthcare proxy authority
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