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Standing Surgery A Non-Traditional Option For Severe Colic Cases

Colic is a very real concern to horse owners. An overarching term applied to any abdominal pain, over 80 percent of colic cases can be resolved without surgical intervention.

The standard colic surgery needed for horses which do require medical intervention involves putting the horse under general anesthesia, laying him down and opening the horse along his ventral midline. This type of surgery carries additional risk to the horse and adds significantly to the cost of treatment.

A new study has found that a flank incision, made while the horse is standing, may be a good option for specific types of colic. This type of surgery is less risky to the horse and less of a financial strain for the owner.

Dr. Marco Lopes and a study team reviewed records of 26 horses and ponies and one donkey which underwent a standing flank laparotomy between 2003 and 2020. The main reason for the decision to utilize this particular surgery was financial.

Though seven animals were euthanized due to an untreatable condition or a poor chance of survival, 20 of the 30 horses with treatable conditions survived. The surviving horses suffered from small intestine impaction or inflammation, large colon displacement (specifically nephrosplenic ligament entrapment), and sand impaction.

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Small colon impaction has already been found to respond well to the standing-flank incision method of treatment.

Study authors found that there are limitations to the surgery. These include:

The horse must remain still during the operation; one in intense pain from severe colic may not be able to have his pain controlled well enough to complete the surgery
Peritoneal cavity and abdominal organ access is not as good as with a typical ventral midline incision
A second incision on the opposite flank may be necessary

The team concluded that a standing flank laparotomy may be a viable approach for abdominopelvic exploration in horses with colic related to the small intestine, cecum, large colon, and peritoneum.

Elevated ACTH Could Signal Complicated Conception

A Japanese study using infertile mares has found that many have elevated levels of adrenocorticotropic hormone (ACTH). ACTH is linked to the endocrine disorder pituitary pars intermedia dysfunction (PPID).

Dr. Takeru Tsuchiya and a research team used 67 Thoroughbred broodmares with unknown fertility issues for the study. Each horse had a physical exam and was deemed healthy.

The mares were tested for PPID in the fall using baseline plasma ACTH concentrations; they were divided into three groups based on their ACTH concentration level: low, intermediate, and high.

The team found 77.3 percent conception rates in the low ACTH group, and 56.5 percent in the high ACTH group. The high ACTH group didn't have a significant difference in the number of breedings, but it had lower conception rates.

PPID affects 15 to 30 percent of horses over 15. High ACTH concentrations are common in older horses. Almost two-thirds of the mares used in the study had elevated ACTH hormones. ACTH may indirectly affect reproductive performance.

The study team concluded that if infertile mares are tested for ACTH concentration levels early, it may be possible to improve reproduction performance. They recommend that other factors, including other reproductive hormones, be investigated for their effect on reproductive performance.

Read the article here.

Does Suture Material Affect Surgery Speed?

Gelding operations are among the most-performed surgical procedures in the equine veterinary world. Though this surgery has been performed for many years, there is always room for potential improvement.

Drs. Ditte Marie Top Adler, Stine Østergaard, Elin Jørgensen and Stine Jacobsen, of the University of Copenhagen, wanted to compare a new, barbed suture martial to traditional suture material that requires the surgeon to make multiple knots to keep the stitches in place. The barbed suture material has tiny barbs on the surface that lock the material in place, eliminating the need for knots. Manufacturers claim the barbs make the material more secure and increase the speed at which the castration can be performed.

The research team used 45 horses that were brought to The Large Animal Teaching Hospital at the University of Copenhagen for inguinal castrations; 24 of the horses were sutured with smooth material and 21 were sutured with the barbed material. The scientists then evaluated any complications while the horse was in and out of the hospital. They also compared how long it took the veterinarian to close the surgical wounds.

There were minor short-term complications; swelling was noted in 29 percent of the stallions that had the barbed suture material and in 33 percent of the horses that had the smooth suture material. Three horses required follow-up care for castration complications. One had scrotal swelling (barbed suture material had been used); one had a weeping wound (smooth suture material had been used); and one had the wound reopen (smooth suture material had been used).

Veterinarians using the barbed suture material were able to close the wound six minutes faster than using smooth suture material.

Though the cost of barbed suture material is higher, it reduced surgery time by 40 percent and it did not result in increased post-op complications.

Read the full article here.