This article is the second in a series on Paynter, the Haskell Invitational winner that developed equine colitis and served
as an illustration of this life-threatening condition in horses. The first article appeared in the November 2012 issue of
DVM Newsmagazine ("Equine colitis: Causes, consequences and management challenges for veterinarians").
Haskell Invitational winner Paynter is recovering well from a ventral midline celiotomy that was performed at the University
of Pennsylvania's New Bolton Center on Oct. 3. The surgery was performed after an ultrasonographic examination found an abscessed
area in his large intestine near the cecal apex.
Pulling through: The veterinary team caring for Paynter, seen above winning the 2012 Haskell Invitational at Monmouth Park
in Oceanport, N.J., says he’s maintained a good temperament throughout his recovery from the celiotomy and has never given
At New Bolton Center, Paynter was treated by Louise Southwood Parente, DVM, MS, PhD, DACVS, DACVECC, and a team of veterinarians
Upon his arrival at the center on Oct. 2, an ultrasonographic examination revealed two areas of abscessation or ulceration
in the cecal apex with thickening of the cecal wall for about 35 cm from the cecal apex into the cecal body. The omentum appeared
to be adhered to the abscessed areas.
During surgery, Southwood Parente explored the 3-year-old colt's abdomen to ensure there were no other complications. "Besides
the cecal apex, everything else seemed within normal limits, and he did not have evidence of significant peritonitis," she
says. "We were able to go back 35 to 40 cm from the cecal apex and staple across, using the ILA-100 stapler, and oversew the
At the conclusion of the surgery, Southwood Parente says she was happy with the surgical site. Paynter's abdomen was lavaged,
and Peridan, an anti-adhesion device that contains fucoidan, a branched, sulfated, complex polysaccharide, was added.
Paynter was transferred to New Bolton Center on Oct. 2 after developing colitis in August and losing a considerable amount
of weight. As reported in the November issue of DVM Newsmagazine, the winning racehorse had a history of pneumonia and laminitis. Additionally, he was hypoproteinemic and had intermittently
spiked mild fevers.
Although there were reservations about taking Paynter to surgery because of his recent disease history and extreme weight
loss, the ultrasonographic findings were concerning, and he continued to have low plasma protein concentrations and intermittent
fevers. He was stable, and the lesion was in a surgically accessible area and somewhat localized, making resection feasible.
Recovery and continued care
After surgery, Paynter recovered well from general anesthesia, and his temperament and appetite remain good. "He never gave
up," says Southwood Parente. "He always ate a lot, and he slept like a foal, which was helpful for his recovery."
Paynter had been treated with ampicillin and amikacin, as well as misoprostol (an anti-ulcer medication) prior to admission,
and Southwood Parente continued those treatments perioperatively. "He seemed a bit quiet after surgery, and so the misoprostol
was discontinued. He then looked remarkably better," she says.
Paynter's temperature was slightly elevated after surgery, and Southwood Parente says she could not determine why. He had
been receiving antimicrobials for seven days after surgery, which was a significant time period. "We pulled his catheter,
and lo and behold, his temperature came down, and he improved further," she says.
As of press time, Paynter was rehabilitating at Bruce Jackson's Equine Therapy Center in Elkton, Md. As of mid-October, his
protein (albumin) concentration had increased, and his fibrinogen concentration had decreased dramatically after catheter
removal. His temperature was continuously monitored, and veterinary staffers continued to keep a close eye on him to ensure
the infection had been resolved and the horse didn't become uncomfortable.
Although he has a way to go until he's fully recovered, Paynter's positive outcome is not only his fighting temperament, but
also the excellent teamwork of veterinary care he has received.
Ed Kane, PhD, is a researcher and consultant in animal nutrition. He is an author and editor on nutrition, physiology and veterinary medicine
with a background in horses, pets and livestock. Kane is based in Seattle.