Objective—To determine associations between age,
sex, or medical treatment and prevalence and severity
of gastric ulceration in Standardbred racehorses in
Animals—224 Standardbred racehorses in training.
Procedure—Gastroscopy was performed on each
horse, and mucosal ulceration was graded from 0
(normal mucosa, no lesions) to 3 (extensive, often
coalescing, lesions with areas of deep ulceration).
Associations between age, sex, or treatment and
prevalence and severity of ulcers were evaluated.
Results—Prevalence of gastric ulceration was 87%.
Although there was little association between age and
prevalence of ulcers, there was an association between
age and severity of ulcers. Most 2-year-old horses
(57.7%) had an ulcer score of 0 or 1. In all other age
groups, most (58% to 82.61%) of horses had an ulcer
score of 2 or 3. Although overall prevalence of ulceration
was comparable among sex groups, the relative risk for
gastric ulceration increased with age in castrated males,
whereas it decreased in females and sexually intact
Conclusions and Clinical Relevance—Gastric ulceration
is common in Standardbred horses in race training.
Severity is higher in horses ≥ 3 years of age than
in 2-year-old horses. Relative risk for ulceration
increases with age in castrated males. (J Am Vet Med Assoc 2002;221:1156–1159)
Objective—To determine the odds of moderate or
severe gastric ulceration in racehorses treated with
various antiulcer medications.
Design—Unmatched case-control study.
Animals—798 horses in active race training (252
Thoroughbreds and 546 Standardbreds). Only horses
that had been receiving a single antiulcer medication
or no antiulcer medication for at least 2 weeks prior to
examination were included.
Procedure—Gastroscopy was performed on each
horse by a single individual who was not aware of the
horses' antiulcer treatments, and severity of gastric
ulceration was scored. Signalment and medication
history were recorded. Logistic regression was used
to determine whether identification of moderate or
severe ulceration was associated with treatment,
age, breed, or sex. Treatments were grouped as no
treatment, buffer, sucralfate, histamine type 2 receptor
antagonist, compounded omeprazole, proprietary
omeprazole at a low dosage, and proprietary omeprazole
at a high dosage.
Results—Only proprietary omeprazole was associated
with significantly lower odds of moderate or
severe ulceration, compared with no treatment. Risks
of moderate or severe gastric ulceration in horses
receiving a buffer, sucralfate, a histamine type 2
receptor antagonist, or compounded omeprazole
were not significantly different from risks in horses
receiving no antiulcer medication.
Conclusions and Clinical Relevance—Results suggest
that the proprietary formulation of omeprazole
was associated with a significantly lower risk of moderate
or severe gastric ulceration, compared with no
treatment, in racehorses in active race training,
whereas other antiulcer medications were not. (J Am
Vet Med Assoc 2003;223:336–339)
Objective—To describe the pool-raft recovery system protocol and to evaluate the clinical outcome inhorses that underwent recovery from general anes-thesia using this system.
Animals—393 horses that underwent recovery fromgeneral anesthesia in the pool-raft system.
Procedure—Anesthetic records were examined fromhorses recovered from anesthesia in the pool-raft sys-tem between January 1984 and December 2000.Complete medical records of horses were examinedwhen available. Information regarding the anestheticand recovery period was recorded. Horses first recov-ered from general anesthesia in the pool-raft and,once awake, were transported to a recovery stall andlowered to the floor in a standing position.
Results—351 horses underwent 1 pool-raft recovery,and 42 horses underwent multiple pool-raft recover-ies. Most horses were recovered from general anes-thesia within the pool-raft system to safeguard repairof a major orthopedic injury. During 471 pool-raftrecoveries, 34 (7%) horses had complications withinthe recovery pool and 62 (13%) had complicationswithin the recovery stall. Deaths resulted from complete failure of internal fixation, pulmonary dysfunc-tion, or a combination of pulmonary dysfunction andfixation failure in 2% (10/471) of horses that under-went pool-raft recoveries.
Conclusions and Clinical Relevance—The pool-raftsystem is a good option for recovery from generalanesthesia. Although not a fail-safe system, itappears to decrease the complications of recoveringhorses in a high-risk category. Potential disadvan-tages of this system are added expense and man-power necessary in building, maintenance, andusage, as well as size limitations of the raft itself. (J Am Vet Med Assoc 2002;221:1014–1018)