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[Hyperammonemia encephalopathy after ureterosigmoidostomy]

G Donnard1, J Dumotier, P Le Dantec

  • 1Département d'Anesthésie-Réanimation (Pr Quinot), HIA Sainte-Anne, Toulon-Naval.

Cahiers D'Anesthesiologie
|January 1, 1996
PubMed
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Ureterosigmoidostomy (USS) surgery for bladder cancer offers improved quality of life but carries risks. A rare case of hyperammonemic encephalopathy after a Mainz Pouch II procedure highlights the need for careful patient selection and monitoring.

Area of Science:

  • Urology
  • Oncology
  • Gastroenterology

Background:

  • Ureterosigmoidostomy (USS) is a surgical option for bladder cancer, aiming to preserve body image and enhance patient quality of life.
  • Despite its benefits, USS can lead to serious complications that may negate the positive outcomes.
  • The Mainz Pouch II is a specific type of ureterosigmoidostomy diversion.

Observation:

  • A patient developed hyperammonemic encephalopathy, a severe neurological condition caused by high ammonia levels in the blood.
  • This complication occurred following a USS procedure, specifically the Mainz Pouch II variant.
  • Hepatic function abnormalities were noted in the context of this complication.

Findings:

  • The case suggests a potential link between ureterosigmoidostomy and hyperammonemic encephalopathy, particularly with the Mainz Pouch II technique.

Related Experiment Videos

  • Abnormal liver function tests may indicate a need for pre-operative liver needle biopsy before USS.
  • Regular "rectal exonerations" (bowel emptying) are crucial for managing potential complications.

    • Implications:

    • Pre-operative assessment of hepatic function, including liver biopsy if indicated, is important for patients undergoing USS.
    • Post-operative management should emphasize strategies to prevent ammonia buildup, such as regular bowel emptying.
    • Further research may be warranted to fully understand the risk factors and management of hyperammonemic encephalopathy after USS.