Gallbladder Perforation: Signs, Emergency Treatment & Complications

What is gallbladder perforation? (Gallbladder rupture)

Gallbladder perforation is a rare but life‑threatening complication of acute cholecystitis, where the gallbladder wall breaks open, allowing bile and infected contents to leak into the abdominal cavity. It occurs in approximately 1‑2% of patients with acute cholecystitis, but the incidence rises to 10‑20% in those with gangrenous cholecystitis. Gallbladder perforation is a surgical emergency with high morbidity and mortality (15‑30%), especially in elderly and diabetic patients.

Causes – progression of acute cholecystitis, gangrene, trauma

Gallbladder perforation is usually a consequence of severe, untreated acute cholecystitis. The sequence is: gallstone obstruction → bile stasis → increased intraluminal pressure → ischaemia → gangrene → perforation. Risk factors include:

• Delayed presentation or treatment of acute cholecystitis.
• Elderly age (>70 years).
• Diabetes mellitus (increased risk of gangrene).
• Immunosuppression.
• Large impacted gallstone (Mirizzi syndrome variant).
• Trauma (blunt abdominal injury) – rare.
• Gallbladder cancer – rare.

Niemeier classification of gallbladder perforation

Based on the site and extent of leakage, perforations are classified into three types:

• Type I (acute free perforation): Sudden rupture into the free peritoneal cavity, causing diffuse biliary peritonitis. Most severe, highest mortality.
• Type II (subacute perforation with pericholecystic abscess): Leak is contained by omentum and surrounding tissues, forming a localized abscess. Most common type (60‑70%).
• Type III (chronic perforation with cholecystoenteric fistula): Gradual erosion into an adjacent organ (duodenum, colon) – can lead to gallstone ileus.

Symptoms – severe pain, peritonitis, septic shock

Symptoms of gallbladder perforation often mimic severe acute cholecystitis but with rapid deterioration:

• Sudden worsening of right upper quadrant pain – becomes diffuse if free perforation.
• Fever and chills (high grade).
• Rigid, tender abdomen (peritonitis).
• Nausea and vomiting.
• Signs of septic shock: Hypotension, tachycardia, confusion, oliguria.
• Jaundice (if bile peritonitis or associated CBD stone).

Diagnosis – ultrasound, CT scan

Imaging is essential for diagnosis, though clinical signs often prompt emergency surgery without delay.

• Abdominal ultrasound: May show a defect in the gallbladder wall, pericholecystic fluid or abscess, irregular gallbladder wall, and loss of wall integrity. Sensitivity limited by bowel gas and patient habitus.
• CT scan (preferred): Highly sensitive. Findings include:
  • Discontinuity of the gallbladder wall.
  • Pericholecystic fluid or abscess.
  • Free intraperitoneal fluid or bile (free perforation).
  • Pneumobilia (air in biliary tree) if a fistula is present.
  • Localised omental thickening.
• Blood tests: Elevated white blood cell count, C‑reactive protein, bilirubin, alkaline phosphatase. Blood cultures may be positive.

Emergency treatment – cholecystectomy, drainage, antibiotics

Gallbladder perforation requires urgent surgical intervention. The approach depends on the patient’s haemodynamic stability and the type of perforation.

• Immediate resuscitation: Intravenous fluids, broad‑spectrum antibiotics (piperacillin‑tazobactam or meropenem + metronidazole), and vasopressors for septic shock.
• Emergency cholecystectomy: Gold standard for fit patients. In Type I (free perforation), cholecystectomy with peritoneal lavage is performed. In Type II, cholecystectomy with abscess drainage.
• Subtotal cholecystectomy: If the anatomy is obscured by severe inflammation, the surgeon may leave part of the gallbladder wall attached to the liver to avoid bile duct injury.
• Percutaneous cholecystostomy (drainage): For unstable, high‑risk patients who cannot tolerate surgery. A drain is placed under ultrasound/CT guidance to decompress the gallbladder and control sepsis. Interval cholecystectomy is performed later.
• Laparoscopic vs open: Most perforations require open cholecystectomy due to inflammation and difficulty visualising structures. Laparoscopy may be attempted in select stable patients.

Complications – abscess, peritonitis, sepsis, death

Even with prompt treatment, gallbladder perforation carries significant complications:

• Biliary peritonitis – can lead to intra‑abdominal abscesses and prolonged hospital stay.
• Sepsis and multi‑organ failure (MOF).
• Post‑operative bile leak from cystic duct stump or liver bed.
• Wound infection.
• Recurrent abscess requiring percutaneous drainage.
• Death: Mortality ranges from 15‑30%, higher in elderly and those with delayed surgery.

Interactive FAQ – Gallbladder perforation

Disclaimer: This information is for educational purposes. Gallbladder perforation is a surgical emergency. If you have severe abdominal pain with fever or signs of peritonitis, seek immediate medical attention at Vivekananda Hospital.