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Abstract

Objective

To determine whether continuous venovenous hemofiltration, proposed to remove inflammatory mediators from circulation, would resolve cardiopulmonary derangements in a model of established endotoxic shock.

Animals

16 clinically normal pigs.

Procedure

Endotoxin was infused, IV, into anesthetized pigs for a total of 50 minutes. Thirty minutes after termination of the infusion period, extracorporeal circulation was initiated through a 50-kd diafilter, or past the filter without ultrafiltrate formation. Cardiac and respiratory variables were monitored for a period of 4 hours.

Results

Infusion of lipopolysaccharide resulted in a severe hypodynamic circulatory state, with significant decreases in mean arterial pressure and cardiac output concurrent with a significant increase in pulmonary arterial pressure. Hemofiltration was not associated with any correction of lipopolysaccharide-induced cardiopulmonary derangements.

Conclusions

Continuous venovenous hemofiltration, as used in this acute experiment, did not improve cardiopulmonary dysfunction during endotoxic shock.

Clinical Relevance

Continuous venovenous hemofiltration needs further investigation before it can be recommended as a clinically effective treatment. (Am J Vet Res 1997;58:408–413)

Free access
in American Journal of Veterinary Research

Abstract

Objective—To determine clinical features of horses with a slab fracture of the central or third tarsal bone and to report outcome of horses in which treatment did not include surgery.

Design—Retrospective study.

Animals—25 horses (14 Standardbreds, 6 Thoroughbreds, 5 Quarter Horses).

Procedure—Medical records of horses with a slab fracture of the central (n = 9) or third (16) tarsal bone were reviewed. Only horses for which treatment consisted of confinement to a stall were included in this study. Clinical features and radiographic findings were recorded and summarized. Outcome was determined for racing breeds by obtaining official lifetime race results. Outcome for Quarter Horses was determined by phone survey of the owners.

Results—16 (64%) horses had a successful outcome. Ten of 14 (71%) Standardbreds and 2 of 6 Thoroughbreds returned to racing and started at least 5 races after injury. Four of 5 Quarter Horses for which follow-up information was available successfully returned to their previous activity. Sex, age, limb affected, or gait was not associated with final outcome. Percentage of racehorses with central tarsal bone fractures that had a successful outcome (2/7) was significantly less than percentage with third tarsal bone fractures that did (10/13).

Conclusions and Clinical Relevance—Results suggest that enforced rest without surgical fixation can be an effective therapeutic option for horses with a slab fracture of the central or third tarsal bone, even if athletic function is expected. (J Am Vet Med Assoc 2000;216:1949–1954)

Full access
in Journal of the American Veterinary Medical Association

Abstract

To address the limitations of traditional IACUC review of clinical research studies involving client-owned animals, the AVMA issued a policy describing the use of a veterinary clinical studies committee (VCSC), analogous to an institutional review board, as a way to ensure the adequate review and oversight of such studies. While IACUC composition, review, approval processes, and responsibilities are well established, uniform guidance for VCSCs is not readily available and not included in the guidance for IACUCs. In this manuscript we describe suggested best practices for scientific and ethical review of veterinary clinical research studies, regardless of the specific research setting. This resource complements the AVMA policy mentioned above by providing additional thoughts on aspects of VCSCs, including considerations necessary for the adequate review and oversight of clinical research studies using client-owned animals by VCSCs or IACUCs.

Free access
in Journal of the American Veterinary Medical Association