Canis ISSN: 2398-2942

Dysuria investigation

Contributor(s): Kyle Braund, Kathy Lunn

Introduction

  • Dysuria is defined as painful and/or difficult urination.
  • Clinical evaluation of urinary function can be accomplished by a series of diagnostic procedures.
  • Physical examination and a complete history of the patient are important in the diagnosis of urinary tract disease.
  • Observation of the patient during urination is very helpful.
  • Signs may be due to urinary tract disease or extra-urinary structures impinging on urinary tract.
Is it likely that the patient has urinary tract disease?Signalment
  • Age:
    • Young: increased likelihood of congenital disease.
    • Adult: consider urethral obstruction Urethra: obstruction or prostatomegaly in male Prostate disease , and urinary tract infection, particularly in female.
    • Geriatric: may have neoplastic obstruction Urethra: neoplasia.

Clinical signs

  • Non-productive straining.
  • Signs of pain while urinating.
  • Hematuria.
  • Frequent attempts to urinate.
  • Passage of small amounts of urine.
    Care not to confuse fecal tenesmus with urinary straining.
  • Systemic signs:
    • Depression (if obstructed).
    • Constipation or straining to defecate (associated with prostatomegaly).

Clinical examination

  • Palpation of bladder size and shape:
    • Palpate urethra per rectum.
    • Empty bladder may indicate poor filling or bladder irritation.
    • Large bladder may indicate outflow obstruction.
  • Palpation of prostate for evidence of enlargement.
  • Palpate bladder before and after urination.
  • Observe urine stream during urination.

Causes of dysuria

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Imaging

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Laboratory investigation

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Prognostic indicators

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Further Reading

Publications

Refereed papers
  • Johnston S D et al(2000)Prostatic disorders in the dog. Anim Reprod Sci60(61), 405-415.
  • Epineira M M D et al(1998)Idiopathic detrusor - urethral dyssynergia in dogs - a retrospective analysis of 22 dogs. JSAP9(6), 264-279.
  • Longshore R C et al(1996)Dysautonomia in dogs - a retrospective study. J Vet Int Med10(3), 103-109.

Other sources of information

  • Lees G E (2000)Incontinence, enuresis, dysuria and nocturia.In: Textbook of Veterinary Internal Medicine. 5th edn. Eds: S J Ettinger & E C Feldman. Philadelphia: W B Saunders. pp 89-92. ISBN 0808921754.


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