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Dystocia in the bitch

epidemiology, aetiology and treatment

Bergström, Annika (2009). Dystocia in the bitch. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2009:42
ISBN 978-91-86195-89-2
[Doctoral thesis]

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Dystocia means difficult birth or inability to expel foetuses through the birth canal. The aetiology of dystocia may be maternal or foetal. Primary uterine inertia is the most common reason for dystocia in the bitch approaching 75% of the cases. The objective of this thesis was to investigate the incidence of dystocia and to find causes of primary uterine inertia. Also the treatment regimes for bitches with primary uterine inertia were evaluated. An epidemiologic investigation was performed. A large animal insurance data-base was used which covered healthy as well as diseased animals over time. Incidence of dystocia and the frequency of caesarean section in affected bitches were calculated. The overall incidence of dystocia was 5.7 cases per 1 000 dog years at risk. The frequency of caesarean section in bitches with dystocia was 64%. The other three studies included healthy bitches and bitches with abnormal parturition and the hormonal concentrations were analysed. An increase in prostaglandinF2α-metabolite concentration was observed from the last week of pregnancy. At labour stage II the plasma concentrations of prostaglandinF2α-metabolite, oxytocin, vasopressin and cortisol all increased in normal labour. Bitches with primary uterine inertia had plasma concentration of prostaglandinF2α-metabolite which was significantly lower compared to the normal bitches. The serum electrolytes was analysed in bitches with normal and abnormal parturition. No evidence was found indicating that abnormal serum concentration of electrolytes was a cause of primary uterine inertia in the bitch. Evaluation of two different treatment regimes revealed no significant difference in labour outcome if the bitch was treated with calcium solution in combination with oxytocin or with oxytocin only. In summary, this thesis provides information about the incidence of dystocia which was earlier unknown. The results suggest that abnormal release or production of prostaglandinF2α may be a cause of primary uterine inertia in bitches.

Authors/Creators:Bergström, Annika
Title:Dystocia in the bitch
Subtitle:epidemiology, aetiology and treatment
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2009
Number of Pages:46
ALLI. Bergström, A., Nødtvedt, A., Lagerstedt, AS., Egenvall, A. (2006).Incidence and breed predilection of dystocia and risk factors for caesarean section in a Swedish population of insured dogs. Veterinary Surgery 35,786-791. II. Olsson, K., Bergström, A., Kindahl, H., Lagerstedt, AS. (2003). Increased plasma concentrations of, vasopressin, oxytocin, cortisol and the prostaglandin F2alpha metabolite during labour in the dog. Acta Physiologica Scandinavica 179, 281-287. III. Bergström, A., Fransson, B., Lagerstedt, AS., Olsson, K. (2006). Primary uterine inertia in 27 bitches: aetiology and treatment. Journal of Small Animal Practice 47, 456-460. IV. Bergström, A., Fransson, B., Lagerstedt, AS., Kindahl, H., Olsson K. Hormonal and electrolyte concentrations in bitches with primary uterine inertia (manuscript).
Place of Publication:Uppsala
ISBN for printed version:978-91-86195-89-2
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:dogs, females, dystocia, parturition, glucocorticoids, oestrogens, oxytocin, progesterone, prostaglandins, vasopressin, electrolytes, epidemiology, aetiology, therapy
Keywords:bitch, cortisol, dystocia, electrolytes, epidemiology, estradiol, oxytocin, progesterone, prostaglandin F2α, vasopressin
Permanent URL:
ID Code:1965
Department:(VH) > Dept. of Clinical Sciences
Deposited By: Annika Bergström
Deposited On:14 May 2009 00:00
Metadata Last Modified:02 Dec 2014 10:15

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