Felis ISSN 2398-2950

Retained fetal membranes / retained fetus

Contributor(s): Rob Lofstedt, Carlos Pinto

Introduction

  • Failure of expulsion of fetal membranes during third stage of labor. Occasionally a dead or live fetus also retained.
  • Treatment: conservative usually successful; hysterotomy or hysterectomy essential if conservative management fails or if the cat owner has no future breeding plans.
  • Prognosis: failure to treat can result in toxemia, metritis and death.

Pathogenesis

Pathophysiology

  • Little known of the pathogenesis in cats.
    Remember that breaks of several days between the birth of kittens can be normal.
  • May be an association with large litters (prolonged parturition may lead to partial primary uterine inertia; or fetal oversize  or obstruction may lead to dystocia and subsequently to secondary uterine inertia).
  • Metritis   →   toxemia.

Timecourse

  • Varies from hours to a few days.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Ekstand C & Linde-Forsberg C (1994) Dystocia in the cat: A retrospective study of 155 cases. JSAP 35 (9), 459-464 VetMedResource.


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