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Urethral plugs in dogs.

A T Stiller1, J P Lulich, E Furrow

  • 1College of Veterinary Medicine, University of Minnesota, St Paul, MN.

Journal of Veterinary Internal Medicine
|February 15, 2014
PubMed
Summary
This summary is machine-generated.

Urethral plugs in dogs are primarily composed of struvite and frequently affect male Pugs. Further research is needed to understand the causes of these canine urethral plugs.

Keywords:
Lower urinary tractMagnesium ammonium phosphateStruviteUrethral obstruction

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Area of Science:

  • Veterinary Medicine
  • Canine Urology
  • Urolithiasis Research

Background:

  • Crystalline-matrix urethral plugs are a novel finding in canine urology.
  • Urethral plugs can cause significant urinary obstruction in dogs.

Purpose of the Study:

  • To characterize the composition of urethral plugs in dogs.
  • To identify clinical features associated with urethral plugs.
  • To determine if specific dog breeds are overrepresented.

Main Methods:

  • Retrospective case series analyzing data from the Minnesota Urolith Center (MUC) and the Veterinary Medical Center, University of Minnesota (VMC UMN).
  • Mineral composition analysis of urethral plugs.
  • Signalment and medical record review for affected dogs.
  • Breed risk analysis comparing plug cases to control groups.

Main Results:

  • 42 urethral plugs were analyzed between 2006-2011, predominantly from male dogs.
  • Struvite was the main mineral component in 83% of plugs.
  • Pugs were significantly overrepresented (OR 179) in plug submissions and struvite urolithiasis.
  • No underlying cause or infection was identified in treated cases.

Conclusions:

  • Urethral plugs should be considered in the differential diagnosis for urinary obstruction in dogs, particularly in male Pugs.
  • The high prevalence of struvite in canine urethral plugs warrants further investigation into underlying causes.
  • Additional research is needed to elucidate the etiology of urethral plug formation in dogs.