In This Issue—December 1, 2014

JAVMA News

Recent veterinary school graduates and long-time practitioners describe the people and experiences that solidified their devotion to their colleges. And AVMA past president Dr. René Carlson has been elected president of the World Veterinary Association.

See page 1188

Letters to the Editor

See page 1215

Anesthesia Case of the Month

See page 1230

Pathology in Practice

See page 1237

commentary

Are there legitimate reasons to retain lead ammunition and fishing gear?

Lead ammunition and fishing tackle constitute concentrated forms of lead commonly inadvertently ingested by birds, potentially leading to toxicoses and death. Various professional organizations have endorsed replacing lead-based ammunition and fishing tackle with nonlead alternatives, and the authors urge the AVMA to adopt a similar policy.

See page 1218

timely topics in nutrition

Awareness and evaluation of natural pet food products in the United States

Natural pet food is the fastest growing segment of the pet food industry in the United States. Understanding what constitutes a natural pet food and how to assess its quality is necessary to enable veterinarians to confidently provide nutritional advice to pet owners.

See page 1241

Laparoscopic treatment of ovarian remnant syndrome in dogs and cats

Surgical removal of residual ovarian tissue is the recommended treatment for dogs and cats with ovarian remnant syndrome, but locating and removing all residual ovarian tissue can sometimes be difficult. In a review of medical records of 5 dogs and 2 cats with ovarian remnant syndrome treated laparoscopically with either a 3-port or single-port technique, median surgery time was 90 minutes (range, 50 to 150 minutes), and none of the patients required conversion to laparotomy. Six of the 7 patients had complete resolution of clinical signs after surgery. One patient underwent laparotomy 7 weeks after surgery for management of stump pyometra, but no further ovarian tissue was detected.

See page 1251

Single-port laparoscopic cryptorchidectomy in dogs and cats

The single-port platform in human laparoscopy has shown promise as a potentially less invasive and less traumatic alternative to multiport laparoscopic techniques. In a review of medical records for 22 dogs and 3 cats that underwent single-port laparoscopic cryptorchidectomy with a single-incision laparoscopic surgery port (n = 15), a multitrocar wound-retractor access system (8), or a metal resterilizable single-port access device (2), median surgical time was 38 minutes (range, 15 to 70 minutes). Thirty-two testes were removed (12 left, 6 right, and 7 bilateral), and 4 patients had 1 additional abdominal surgical procedure performed concurrently. No intraoperative or postoperative complications were encountered.

See page 1258

Outcome following curative-intent surgery for oral melanoma in dogs

In dogs with oral melanoma, wide resection is the most effective modality for eradicating the primary tumor, but information is lacking on outcome following curative-intent removal. In a review of medical records for 70 dogs that underwent curative-intent resection of oral melanoma, 51 (72.9%) had their tumors completely excised. Twenty-nine (41.4%) dogs received adjuvant therapy. Median progression-free interval and survival time were 508 and 723 days, respectively. Significant associations with PFI or ST were found for administration of adjuvant therapy, presence of metastatic disease at the time of diagnosis, higher tumor stage, large tumor size, and sexually intact female dogs.

See page 1266

Necrotizing meningoencephalitis in a large mixed-breed dog

A 4-year-old Staffordshire Bull Terrier mix with cluster seizures was examined. Magnetic resonance imaging findings included multifocal, asymmetric forebrain lesions affecting both the gray and white matter, an area suggestive of focal necrosis, loss of corticomedullary distinction, and signs of greater-than-normal intracranial pressure. The dog's neurologic status continued to worsen despite bilateral craniectomy and durectomy, and the dog was euthanized. A diagnosis of necrotizing meningoencephalitis was made, indicating that this condition should be considered as a differential diagnosis for dogs other than small or toy breeds that have signs suggestive of inflammatory disease.

See page 1274

Relationship between rectal temperature at first treatment for bovine respiratory disease complex in feedlot calves and the probability of not finishing the production cycle

Rectal temperatures are routinely obtained for calves with signs of bovine respiratory disease complex, and the final decision to treat a calf may be made on the basis of rectal temperature exceeding some predetermined threshold. However, results of a study involving 344,982 calves identified as having BRDC suggest that rectal temperature at the time of first treatment for BRDC has limited prognostic value. For these calves, as rectal temperature increased, the probability that the calf would not finish the production cycle also increased. However, the relationship was not linear. Area under the receiver operating characteristic curve for correct identification of a calf that did not finish was 0.646.

See page 1279

Physiologic and biochemical assessments of koi following immersion in propofol

Despite the popularity of propofol as an anesthetic in mammals, little is known regarding its use in fish, even though previous studies have shown that teleost fish have γ-aminobutyric receptors in their spinal cord and brain. In a prospective study involving 10 adult koi exposed to each of 4 concentrations of propofol (1, 2.5, 5, and 10 mg/L), a concentration of 1 mg/L resulted in sedation but not anesthesia. Higher concentrations resulted in anesthesia, and all fish recovered satisfactorily. In contrast, when 9 koi were anesthetized with propofol at a concentration of 5 mg/L with anesthesia maintained with propofol at a concentration of 3 mg/L for 20 minutes, 2 fish had recovery times > 4 hours and 1 fish died.

See page 1286

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