Search Results

You are looking at 1 - 2 of 2 items for

  • Author or Editor: Ernest Parson x
  • Refine by Access: All Content x
Clear All Modify Search


Medical records of 116 horses admitted to the Texas Veterinary Medical Center between Jan 1, 1984 and Dec 31, 1991 with duodenitis/proximal jejunitis (dpj) were reviewed. The prevalence of laminitis was 28.4% (33/116; 95% confidence interval: 20.2 to 36.6%). The prevalence of dpj and DPJ-associated laminitis did not appear to vary significantly by year during the study period. Anamnesis, physical examination, clinicopathologic data, and initial treatment recorded at the time of admission were reviewed to determine risk factors associated with development of laminitis associated with dpj. A trend of increasing prevalence of laminitis with increasing weight was observed. Using a multiple logistic regression model, horses weighing ≥ 550 kg were approximately twice as likely to develop laminitis than horses weighing < 550 kg (P = 0.048). Horses with hemorrhagic reflux observed at the time of admission were nearly twice as likely to develop laminitis than horses without hemorrhagic reflux (P = 0.022).

Treatments administered prior to admission or at our clinic did not significantly affect development of laminitis, except for administration of heparin to prevent laminitis. Of 33 horses that developed laminitis associated with dpj, 2 had laminitis at the time of admission. These 2 horses were excluded from analysis of the effects of heparin administered as prophylaxis for laminitis; neither horse was treated with heparin. The proportion of horses that developed laminitis among horses that received heparin (0.0%; 0/12) was significantly (P = 0.018) less than that among horses that did not receive heparin (29.8%; 31/104). Because of the small number of horses that received heparin and the retrospective design of this study, the clinical importance of this association could not be determined.

Free access
in Journal of the American Veterinary Medical Association


Over a 3-year period, proventriculotomy was performed on 18 ostriches to relieve impaction of the proventriculus. Diagnosis was confirmed by abdominal palpation, abdominal radiography, and in some cases, exploratory proventriculotomy. In addition to proventriculotomy, an esophagotomy was performed in 5 birds that were debilitated to allow forcefeeding during the postoperative period. The median age of ostriches treated surgically for proventricular impaction was 7.5 months (range, 3 months to 18 years).

Impactions consisted of sand, rocks, or gravel in combination with grass, leaves, wood, or other fibrous materials. In 7 birds, small pieces of wire or nails were also removed from the proventriculus. In 1 bird, a large metal punch was removed via the proventriculotomy.

Six ostriches died at the hospital in the immediate postoperative period. Four of these died within 24 hours of surgery. All 4 birds were emaciated and in a severely weakened condition at admission, and they continued to deteriorate after surgery. One bird died 8 days after surgery as a result of complications associated with a septic joint unrelated to the proventriculotomy procedure. Another bird was euthanatized 6 days after surgery because its condition failed to improve and the owners did not want to pursue further treatment because of expense. Follow-up information was obtained for 12 surviving ostriches 1 week to 29 months (median, 5.5 months) after they were discharged from the hospital. Four of the 12 birds died within 30 days of discharge from the hospital. The remaining 8 birds (44%) were alive at follow-up evaluation (median, 10.5 months after surgery; range, 5 to 29 months). In the birds that survived long-term, complications associated with the proventriculotomy or esophagotomy were not observed.

Free access
in Journal of the American Veterinary Medical Association