Difference between revisions of "Pseudopregnancy"

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Treatment usually involves hysterectomy or allowing time for symptoms to abate by normal hormonal resolution.
 
Treatment usually involves hysterectomy or allowing time for symptoms to abate by normal hormonal resolution.
  
[[Proligestone]] or [[cabergoline]] (5 μg/kg - 15 μg/kg) may be indicated if excessive prolactin production is evident (>4 ng/mL)<ref>Tsutsui T ''et al'' (2007) Plasma progesterone and prolactin concentrations in overtly pseudopregnant bitches: a clinical study. ''Theriogenology'' '''67(5)''':1032-1038</ref>.
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[[Proligestone]], [[bromocriptine]] or [[cabergoline]] (5 μg/kg - 15 μg/kg) may be indicated if excessive prolactin production is evident (>4 ng/mL)<ref>Tsutsui T ''et al'' (2007) Plasma progesterone and prolactin concentrations in overtly pseudopregnant bitches: a clinical study. ''Theriogenology'' '''67(5)''':1032-1038</ref>.
  
 
==References==
 
==References==
 
<References/>
 
<References/>

Revision as of 00:48, 2 April 2013

Pseudopregnancy01.jpg

Pseudopregnancy (phantom pregnancy; false pregnancy; pseudocyesis) is a relatively common phenomenon in small dogs characterized by pregnancy behaviour, physical changes associated with pregnancy, but the absence of foetuses.

Pseudo pregnancy is a normal physiological process that occurs in female dogs, not usually associated with reproductive organ disorders. It is seen 45-60 days after a normal estrous (heat) period, as progesterone levels, which rise after ovulation, begin to fall[1]. Decreasing progesterone leads to an increase of prolactin, responsible for most of the behaviors seen during a pseudopregnancy episode[2].

Clinical signs include mothering of toys, nesting, or even aggression. Mammary development and milk production are common.

Mastitis and vaginal hyperplasia are sometimes observed as a complication. Pseudopregnancy can also be acutely induced by spaying a dog near the end of estrus.

Diagnosis is based on the presence of typical clinical signs in metaoestrous non-pregnant bitches[3].

Treatment usually involves hysterectomy or allowing time for symptoms to abate by normal hormonal resolution.

Proligestone, bromocriptine or cabergoline (5 μg/kg - 15 μg/kg) may be indicated if excessive prolactin production is evident (>4 ng/mL)[4].

References

  1. Gobello C et al (2001) Study of the change of prolactin and progesterone during dopaminergic agonist treatments in pseudopregnant bitches. Anim Reprod Sci 66(3-4):257-267
  2. Gobello C et al (2001) Dioestrous ovariectomy: a model to study the role of progesterone in the onset of canine pseudopregnancy. J Reprod Fertil Suppl 57:55-60
  3. Gobello C et al (2001) A review of canine pseudocyesis. Reprod Domest Anim 36(6):283-288
  4. Tsutsui T et al (2007) Plasma progesterone and prolactin concentrations in overtly pseudopregnant bitches: a clinical study. Theriogenology 67(5):1032-1038