Search Results

You are looking at 11 - 20 of 145 items for :

  • "cesarean section" x
  • Refine by Access: All Content x
Clear All

days 84, 90, 120, 150, and 180 (approx days 46, 52, 82, 112, and 142 of gestation, respectively), pregnancy status and fetal viability of each pregnant heifer was determined by transrectal ultrasonography. Cesarean section —On days 188 to 190 (approx

Full access
in American Journal of Veterinary Research

with manual assistance; controlled vaginal delivery, in which the mare is anesthetized and has controlled delivery of an intact foal through the vaginal canal; cesarean section, in which the foal is removed through a uterine incision after celiotomy

Full access
in Journal of the American Veterinary Medical Association

isolated cases. 4,5 In a more recent report, 6 the authors suggest that until mares become suitable candidates for induction of parturition or elective caesarian section, they be managed with supportive care, analgesia, restricted exercise, and abdominal

Full access
in Journal of the American Veterinary Medical Association

positioned in right lateral recumbency, and a cesarean section was performed through an oblique incision in the left flank. A dead, malformed bull calf was delivered, and the cadaver was submitted for necropsy. The uterus and abdominal wall were closed

Full access
in Journal of the American Veterinary Medical Association

– 77 . 10.1016/j.smallrumres.2013.12.026 17. Brounts SH , Hawkins JF , Baird AN , et al. Outcome and subsequent fertility of sheep and goats undergoing cesarean section because of dystocia: 110 cases (1981–2001) . J Am Vet Med Assoc 2004

Full access
in Journal of the American Veterinary Medical Association

trainees with experienced nonspecialty faculty oversight. The search terms dystocia, difficult labor, pregnancy, cesarean section, and C-section were searched to identify bitches presented for dystocia between October 2015 and October 2020. Inclusion of

Free access
in Journal of the American Veterinary Medical Association

SUMMARY

Plasma glucocorticoid concentrations and blood gas values were determined for 6 days in 47 newborn calves that had been subjected to various obstetrical procedures at term. Concentrations of glucocorticoids were uniformly high at birth (70 to 103 ng/ml). Increasing degrees of acidosis were accompanied by increasing glucocorticoid concentrations in plasma. Plasma glucocorticoid concentrations decreased sharply during the first 6 hours after delivery and reached a plateau at 48 hours after birth (14 to 21 ng/ml). The latter was taken as an indication that adaptation had been achieved. Calves subjected to severe pulling had higher glucocorticoid concentrations at birth (110.4 ng/ml) than calves requiring no assistance (88.3 ng/ml), calves requiring only slight assistance (83.8 ng/ml), or calves that had been delivered by cesarean section (82.9 ng/ml).

Free access
in American Journal of Veterinary Research

Summary

Toxoplasmosis was diagnosed histologically in 9 kittens and 1 queen from 5 litters. In litter 1, four 3-month-old Siamese kittens and the queen were affected. The queen died of generalized toxoplasmosis, and her kittens died or were euthanatized 20, 22, or 28 days later. In litter 2, two of 3 Abyssinian 4- and 4.5-month-old kittens died of toxoplasmosis. In litter 3, an Abyssinian, delivered by cesarean section, became ill 17 days after delivery, and died 2 days later because of toxoplasmic hepatitis and pneumonia. In litter 4, three kittens, approximately 1 month old, were shedding Toxoplasma gondii-like oocysts, and the organism was identified histologically in tissues of 1 of them. In litter 5, one 3-week-old kitten out of 4 became ill. Toxoplasma gondii-like oocysts were found in feces and T gondii organisms were found in histologic sections of tissues.

Free access
in Journal of the American Veterinary Medical Association

Abstract

Objective

To investigate effects of preterm induction of calving by administration of flumethasone and dinoprost on the lecithin-to-sphingomyelin ratio in amniotic fluid and on neonatal respiratory distress after birth.

Animals

45 dairy cows and their newborn calves.

Procedure

Amniotic fluid from 45 cows was obtained and tested between days 258 and 270 of gestation. Cows were then given flumethasone (10 mg; n = 15), dinoprost (25 mg; n = 15), or saline solution (n = 15). Thirty hours later, left flank cesarean section was performed, amniotic fluid was collected, and the calf was delivered. Blood for determination of progesterone was withdrawn at amniotic fluid sample collections and before induction of calving. Blood for analysis of pH and base deficit was collected from calves during cesarean section and repeatedly after birth. Phospholipids in amniotic fluid were measured by thin-layer chromatography, and progesterone was determined by radioimmunoassay. Base deficit and pH were measured, using a blood gas analyzer.

Results

Before treatments, a corpus luteum was present in all cows and the lecithin-to-sphingomyelin ratio in amniotic fluid did not differ between groups. Thirty hours after injections of flumethasone and dinoprost, progesterone concentration had decreased (P < 0.05) and the lecithin-to-sphingomyelin ratio was significantly (P < 0.05) higher than values in controls. In calves delivered after flumethasone or dinoprost treatments, the degree of acidosis was significantly (P < 0.05) less than that in controls.

Conclusions

Flumethasone and dinoprost, given to pregnant cows, accelerate fetal lung maturation and improve respiratory function after birth. (Am J Vet Res 1997;58:404–407)

Free access
in American Journal of Veterinary Research

SUMMARY

Muscle damage attributable to selenium (Se)/vitamin E deficiencies is known to develop at birth or later in lambs. The purpose of this study was to determine whether and when muscle damage develops in utero. Thirty pregnant ewes maintained on Se-deficient forages from birth were allotted to 3 equal groups. Half of each group was given a single im injection of 0.056 mg of Se/kg of body weight, 1 month before parturition. At 3 weeks before parturition, cesarean section-derived fetuses from Se-deficient ewes did not have evidence of muscle damage. At 2 weeks before parturition, fetuses from Se-deficient ewes had biochemical evidence of congenital nutritional myopathy, as evidenced by low blood Se concentration (P < 0.05) and by increased plasma creatine kinase (P < 0.001) and lactate dehydrogenase (P < 0.01) activities, compared with fetuses from Se-treated ewes. Thus, for optimal protection of fetuses and newborn lambs in Se-deficient areas, Se should be administered to ewes at least 1 month before parturition.

Free access
in American Journal of Veterinary Research