Article (Scientific journals)
Influence of the estrous cycle on urodynamic and morphometric measurements of the lower portion of the urogenital tract in dogs
Hamaide, Annick; Verstegen, John; Snaps, Frédéric et al.
2005In American Journal of Veterinary Research, 66 (6), p. 1075-1083
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Abstract :
[en] OBJECTIVES: To compare the values of the urodynamic parameters of the lower portion of the urinary tract and vaginourethral measurements obtained during the phases of the estrous cycle in dogs and determine possible functional or anatomic modifications of the lower portion of the urinary tract associated with those phases. ANIMALS: 7 adult female Beagles. PROCEDURE: Urethral pressure profilometry, diuresis cystometry, and vaginourethrography were performed in each dog during proestrus; estrus; early, mid, and late diestrus; and early and late anestrus. The maximum urethral pressure (MUP), maximum urethral closure pressure (MUCP), urethral functional and anatomic profile lengths (UFPL and UAPL, respectively), integrated pressure, threshold pressure, threshold volume, compliance, urethral length, and vaginal length and width were measured. RESULTS: For all measurements, significant interindividual variation was detected. Integrated and threshold pressures, APL, and each morphometric value significantly increased from late anestrus to proestrus. Compared with other phases, MUP, MUCP, and integrated pressure values were significantly lower in estrus and early diestrus; UAPL and UFPL values were significantly lower in late diestrus. At each cycle phase in old dogs, MUP, MUCP, threshold pressure, and vaginal length and width were significantly lower (except in proestrus for vaginal measurements) and threshold volume and compliance values were significantly higher, compared with middle-aged dogs. CONCLUSIONS AND CLINICAL RELEVANCE: Urodynamic and morphometric measurements of the lower portion of the urogenital tract are affected by the changes in hormonal balance that occur during the estrous cycle. In sexually intact female dogs, estrous phase determination is important for the interpretation of urodynamic data.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Hamaide, Annick ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Chirurgie des Petits Animaux
Verstegen, John
Snaps, Frédéric ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Imagerie médicale
Onclin, Karine
Balligand, Marc ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Chirurgie des petits animaux
Language :
English
Title :
Influence of the estrous cycle on urodynamic and morphometric measurements of the lower portion of the urogenital tract in dogs
Publication date :
2005
Journal title :
American Journal of Veterinary Research
ISSN :
0002-9645
eISSN :
1943-5681
Publisher :
American Veterinary Medical Association, Schaumburg, United States - Illinois
Volume :
66
Issue :
6
Pages :
1075-1083
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 March 2009

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