Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Case Study
  • Published:

Urea-splitting urinary tract infection contributing to hyperammonemic encephalopathy

Abstract

Background We present a case of severe neurological symptoms caused by hyperammonemia, secondary to a urinary tract infection with urea-splitting bacteria.

Investigations Blood analysis, urinalysis, urine culture, abdominal ultrasonography, cystography, CT.

Diagnosis Hyperammonemia as a result of urinary tract infection with urea-spliting bacteria.

Management Desobstruction of the urinary tract and bladder or pouch rinsing, antibiotics, reduction of the dietary and endogenous nitrogen load, and endogenous nitrogen breakdown. Identification, prevention and treatment of underlying causes.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1: Cystography showing marked bladder distension

References

  1. Kiyokawa H et al. (2001) Hyperammonaemic encephalopathy associated with retention of urine in multiple large diverticula. BJU Int 88: 122–123

    Article  CAS  Google Scholar 

  2. Drayna CJ et al. (1981) Hyperammonemic encephalopathy caused by infection in a neurogenic bladder. N Engl J Med 304: 766–768

    Article  CAS  Google Scholar 

  3. Joniau S et al. (2001) Hepatic coma after urea-splitting urinary tract infection in a continent T-pouch. BJU Int 88: 803

    Google Scholar 

  4. Kaveggia FF et al. (1990) Hyperammonemic encephalopathy in urinary diversion with urea-splitting urinary tract infection. Arch Intern Med 150: 2389–2392

    Article  CAS  Google Scholar 

  5. Hawkes N et al. (2001) Non-hepatic hyperammonaemia: an important, potentially reversible cause of encephalopathy. Postgrad Med J 77: 717–722

    Article  CAS  Google Scholar 

  6. Ronci-Koenig TJ et al. (1990) Infections due to Corynebacterium group D2. Report of a case. Arch Intern Med 150: 1965–1966

    Article  CAS  Google Scholar 

  7. Cheang HK et al. (1998) Hyperammonaemia due to Klebsiella infection in a neuropathic bladder. Pediatr Nephrol 12: 658–659

    Article  CAS  Google Scholar 

  8. Butterworth RF (1998) Effects of hyperammonaemia on brain function. Inherit Metab Dis 21 (Suppl 1): 6–20

    Article  Google Scholar 

  9. Felipo V and Butterworth RF (2002) Neurobiology of ammonia. Prog Neurobiol 67: 259–279

    Article  CAS  Google Scholar 

  10. Watanabe A (2000) Portal-systemic encephalopathy in non-cirrhotic patients: classification of clinical types, diagnosis and treatment. J Gastroenterol Hepatol 15: 969–979

    Article  CAS  Google Scholar 

  11. Schenker S et al. (1974) Hepatic encephalopathy: current status. Gastroenterology 66: 121–151

    Article  CAS  Google Scholar 

  12. Kuntze J et al. (1985) Hyperammonemic coma due to Proteus infection. J Urol 134: 972–973

    Article  CAS  Google Scholar 

  13. Gabra H et al. (2003) Hyperammonemia with complex urinary tract anomaly: a case report. J Pediatr Surg 38: E16–17

    Article  CAS  Google Scholar 

  14. De Jonghe B et al. (2002) Urinary tract infection and coma. Lancet 360: 996

    Article  Google Scholar 

  15. Hautmann RE et al. (2006) Long-term results of standard procedures in urology: the ileal neobladder. World J Urol 24: 305–314

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Steven Joniau.

Ethics declarations

Competing interests

The authors declare no competing financial interests.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Albersen, M., Joniau, S., Van Poppel, H. et al. Urea-splitting urinary tract infection contributing to hyperammonemic encephalopathy. Nat Rev Urol 4, 455–458 (2007). https://doi.org/10.1038/ncpuro0877

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1038/ncpuro0877

This article is cited by

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing