Measurements of urethral pressure profiles in the male horse.
Urinary tract pressure profiles were evaluated in 6 clinically normal geldings over 3 consecutive days. This was performed by introducing a 1.3 m-long cuffed catheter into the urinary tract, under xylazine sedation (0.8 mg/kg, iv). The method was reproducible. The mean (+/- sd) intra-vesicular pressure (IVP) and maximal urethral closure pressures (MUCP) were 10.3 (+/- 1.7) and 129.8 (+/- 19.6) cmH2O, respectively, and the ratio between MUCP and IVP was 13.2 (+/- 2.5). A gelding with urinary incontinence showed a significantly lower MUCP (73.4 cmH2O), and an MUCP to IVP ratio of 8.0. It was concluded that the day-to-day variation was non-significant, and that the technique may be useful in the differential diagnosis of urinary incontinence in male horses.
Ronen
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Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa.
D000818:Animals; D006734:Horse Diseases / Q000175:diagnosis / Q000503:physiopathology*; D006736:Horses / Q000502:physiology*; D008297:Male; D011312:Pressure; D015203:Reproducibility of Results; D014521:Urethra / Q000502:physiology*; D001743:Urinary Bladder / Q000502:physiology; D014546:Urinary Catheterization / Q000662:veterinary; D014549:Urinary Incontinence / Q000175:diagnosis / Q000503:physiopathology / Q000662:veterinary*