Tag Archives: Oxytocin

Vertebrate endocrine systems

In contrast to the invertebrate endocrine system, the emphasis in the vertebrate endocrine system is on classical endocrine organs with many physiological processes controlled by these organs. However, the nervous system still exerts an influence over the endocrine system since some of the peripheral endocrine organs are under the control of the anterior pituitary, which… Read More »

Aglepristone (Alizin, Alizine)

Injectable Progesterone Blocker Highlights Of Prescribing Information • Injectable progesterone blocker indicated for pregnancy termination in bitches; may also be of benefit in inducing parturition or in treating pyometra complex in dogs & progesterone-dependent mammary hyperplasia in cats • Not currently available in USA; marketed for use in dogs in Europe, South America, etc. •… Read More »

Treatment of RFM

Although many mares with RFM do not become clinically ill, early prophylactic intervention is widely practiced because the complications associated with RFM may be severe and potentially life threatening. Many farm managers and horse owners with a veterinary client-patient relationship may be instructed to begin intramuscular (IM) injections of oxytocin 2 to 4 hours postpartum… Read More »

Postpartum Hemorrhage: Physical Examination

Unremitting signs of colic in the postfoaling mare warrant a thorough examination by a veterinarian. The restlessness may be caused by uterine contractions, especially if oxytocin has been administered to promote passage of the fetal membranes. If the discomfort continues, however, the possibility of a dissecting hematoma in the broad ligament must be considered. If… Read More »

Postpartum Prolapse and Genital Tract Lacerations

Uterine Prolapse The veterinarian can be presented with a case of uterine prolapse under two conditions. The first is the prolapse that occasionally occurs under general anesthesia when the mare is in dorsal recumbency. The second is the prolapse that occurs during natural foaling. The former type of prolapse usually is associated with delivery of… Read More »

Induction of Parturition

Elective, attended foalings are advantageous to monitor mares that have experienced dystocia or premature placental separation in previous deliveries. Mares with gestational abnormalities such as rupture of the prepubic tendon or hydroallantois may require assistance during delivery. However, induction of parturition in itself can be associated with side effects such as dystocia, premature placental separation,… Read More »

Abdominal Wall Hernias

The weight of the pregnant uterus on the caudal epigastric and caudal superficial veins may restrict drainage of the area, and a severe plaque of ventral edema can extend from the udder to the xiphoid. Mares with a ventral hernia present with a similar plaque of inflammatory edema. Damage to the musculature by external trauma… Read More »

Placental Hydrops

Hydrops is a rare condition in the mare, with hydroallantois occurring more commonly than hydramnios. Hydroallantois causes rapid abdominal enlargement during the last trimester of pregnancy (), and a sudden increase in the volume of allantoic fluid during a period of 10 to 14 days. The pathophysiology of hydroallantois in the mare remains unknown. Some… Read More »

Effect Of Obstetric Conditions On Peritoneal Fluid

Uterine Torsion In this author’s experience presurgical peritoneal fluid samples from uncomplicated uterine torsion cases have not revealed any values outside of the normal range. If neglected or misdiagnosed, mares may develop significant uterine compromise that results in changes in the composition of the peritoneal fluid. WBC counts in excess of 10,000 cells/μl in conjunction… Read More »

Oocyte Transfer

Oocyte transfer is the placement of a donor’s oocyte into the oviduct of a recipient. The recipient can be inseminated within the uterus or within the oviduct. Placement of the oocyte and sperm within the recipient’s oviduct is more accurately termed gamete intrafallopian transfer (GIFT). The first successful oocyte transfer was done in 1989; however,… Read More »