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Bergen et al: Clinical use of uncovered balloon‐expandable metallic biliary stents for treatment of extrahepatic biliary tract obstructions in cats and dogs: 11 cases (2012–2022)
Veterinary Surgery 2, 2024

🔍 Key Findings Summary

  • Subjects: 11 animals (8 dogs, 3 cats)
  • Technique: Uncovered balloon-expandable metallic biliary stents (BEMBS)
  • Indications: Cholelithiasis, strictures, neoplasia, cholangiohepatitis, etc.
  • Success: Patency achieved in all animals surviving to discharge
  • Complications:
    • Short-term mortality: 2/11 (1 euthanized for SIRS, 1 unknown)
    • Long-term issues: cholangiohepatitis, choledocholithiasis, stent occlusion (in cats only)
  • Long-term patency:
    • Dogs: median 650.5 days
    • Cats: median 446 days
  • Stent removal possible even after >600 days in some cats
  • Clinical outcome: Viable alternative to plastic stents or cholecystoenterostomy

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← Articles

Bergen et al: Clinical use of uncovered balloon‐expandable metallic biliary stents for treatment of extrahepatic biliary tract obstructions in cats and dogs: 11 cases (2012–2022)
Veterinary Surgery 2, 2024

🔍 Key Findings Summary

  • Subjects: 11 animals (8 dogs, 3 cats)
  • Technique: Uncovered balloon-expandable metallic biliary stents (BEMBS)
  • Indications: Cholelithiasis, strictures, neoplasia, cholangiohepatitis, etc.
  • Success: Patency achieved in all animals surviving to discharge
  • Complications:
    • Short-term mortality: 2/11 (1 euthanized for SIRS, 1 unknown)
    • Long-term issues: cholangiohepatitis, choledocholithiasis, stent occlusion (in cats only)
  • Long-term patency:
    • Dogs: median 650.5 days
    • Cats: median 446 days
  • Stent removal possible even after >600 days in some cats
  • Clinical outcome: Viable alternative to plastic stents or cholecystoenterostomy

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Multiple Choice Questions on this study

In Bergen 2024 et al., on biliary stent use, what was the median duration of bile duct patency in dogs with long-term follow-up?

A. 120 days
B. 356 days
C. 446 days
D. 622 days
E. 650.5 days

Answer: 650.5 days

Explanation: Dogs maintained bile duct patency for a median of 650.5 days.
In Bergen 2024 et al., on biliary stent use, what material was used for most BEMBS?

A. Polyurethane
B. Silicone
C. MP35N cobalt alloy
D. Polytetrafluoroethylene
E. Polyethylene

Answer: MP35N cobalt alloy

Explanation: MP35N cobalt alloy was the most commonly used stent material.
In Bergen 2024 et al., on biliary stent use, what complication occurred only in cats long-term?

A. Stent migration
B. Sepsis
C. SIRS
D. Ascending cholangiohepatitis
E. Hypoalbuminemia

Answer: Ascending cholangiohepatitis

Explanation: Only cats developed ascending cholangiohepatitis during long-term follow-up.
In Bergen 2024 et al., on biliary stent use, what was the reason for stent removal in one cat?

A. Bile leakage
B. Stent migration
C. Recurrent choledocholithiasis
D. Malignant obstruction
E. Pancreatitis

Answer: Recurrent choledocholithiasis

Explanation: Stent removal was necessary due to choledocholiths adhering to the mesh.
In Bergen 2024 et al., on biliary stent use, what was the most common cause of EHBO in dogs?

A. Pancreatitis
B. Cholangiohepatitis
C. Cholelithiasis
D. Biliary stricture
E. Biliary carcinoma

Answer: Pancreatitis

Explanation: Pancreatitis was the most common cause of EHBO in dogs according to the article.

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Clinical use of uncovered balloon‐expandable metallic biliary stents for treatment of extrahepatic biliary tract obstructions in cats and dogs: 11 cases (2012–2022)