Table of Contents and AbstractsJuly 2018, Vol. 59, No. 7


Case Reports

Long-term clinical control of feline pancreatic carcinoma with toceranib phosphate

Andrea M. Dedeaux, Ingeborg M. Langohr, Bonnie B. Boudreaux (page 751)

An 11-year-old, spayed female, domestic shorthair cat was presented with a non-resectable abdominal mass diagnosed as carcinomatosis of pancreatic origin. Treatment with toceranib phosphate was started. Abdominal ultrasound approximately 1 year after diagnosis revealed progressive disease. The cat was humanely euthanized approximately 792 days after initial presentation due to progressive clinical signs.

Acute cerebrovascular event in a dog with polycythemia vera

William Kay, Jr., Jennifer M. Gambino, Kari V. Lunsford, Andrew Mackin, Andy Shores, Jim Cooley, Michaela J. Beasley (page 755)

A 1-year-old neutered male Labrador retriever mixed breed dog was referred for peracute onset of ataxia and seizures. Hematocrit at presentation was 84%. Magnetic resonance imaging of the brain revealed a lesion in the right caudate nucleus consistent with infarction. Postmortem findings were consistent with polycythemia vera and presumed secondary cerebral infarction.

Successful management of proteinuria and systemic hypertension in a dog with renal cell carcinoma with surgery, telmisartan, and amlodipine

Yong-Jin Kwon, Guk-Hyun Suh, Seong-Soo Kang, Ha-Jung Kim (page 759)

An 11-year-old neutered male Yorkshire terrier dog was presented with a 3-week history of hematuria and anorexia. A unilateral renal mass was detected and surgically removed. The renal mass was diagnosed on histopathologic examination as a renal carcinoma. Supportive medical therapy was carried out and persistent systemic hypertension was managed using telmisartan.

Internal neurolysis of the maxillary branch of the trigeminal nerve for the treatment of equine trigeminal mediated headshaking syndrome

Chris Bell, Luke Hnenny, Kris Torske (page 763)

A 5-year-old Hannovarian warmblood gelding was presented for recurrent headshaking exacerbated with exercise. The horse displayed clinical signs of repetitive vertical head movements, face rubbing on the forelimbs and on the ground, repetitive sneezing, and striking the muzzle with his forelimbs. The clinical signs resulted in a horse that could not be ridden and was dangerous. Clinical signs were most persistent in direct sunlight, but occurred with excitement, exercise, or bridling indoors. A diagnosis of equine trigeminal mediated headshaking syndrome was made. Surgical treatment was performed with a supraorbital approach to the maxillary branch of the trigeminal nerve as it exits the round foramen, where an internal neurolysis (nerve combing) was conducted on both the left and right nerves. Severe headshaking behavior resolved after surgery. The horse displayed face rubbing of the muzzle which began 96 hours after surgery and resolved over 12 days with corticosteroid and vitamin E therapy. The horse became pasture sound and the clinical signs had resolved in the presence of sunlight, but repetitive vertical head movements persisted under saddle which left the horse unpleasant to ride.


A pilot study of Coxiella seroprevalence in occupationally exposed individuals in the Peace River region of Alberta and British Columbia

Ilona Houston, Christy Barlund, Lynora Saxinger, Heidi Wood, Stan Houston (page 770)

A pilot seroprevalence study was performed among asymptomatic occupationally exposed individuals in June, 2016 in the Peace River region of Alberta and British Columbia. Five of 40 subjects — 3 of 24 small ruminant producers, 1 of 14 abattoir workers, and 1 of 2 veterinarians had evidence of Coxiella exposure. More systematic surveillance and more active promotion of biosecure husbandry methods should be considered.

Effect of routine pre-anesthetic laboratory screening on pre-operative anesthesia-related decision-making in healthy dogs

Krista Mitchell, Michele Barletta, Jane Quandt, Molly Shepard, Stephanie Kleine, Erik Hofmeister (page 773)

The usefulness of pre-anesthetic laboratory screening of healthy veterinary patients is controversial and clear evidence-based guidelines do not exist. The purpose of our study was to determine the influence of pre-anesthetic laboratory screening on peri-anesthetic plans in canine patients undergoing elective surgery. One hundred medical records were randomly selected between the years 2008 and 2013 and patient information was presented to 5 Diplomates of the American College of Veterinary Anesthesia and Analgesia (ACVAA) for review. They were given pre-anesthetic laboratory screening test results for each patient and asked whether the results would change the way they managed the case from an anesthesia perspective. Peri-operative anesthetic management was altered in 79% of patients based on pre-anesthetic screening results; however, the overall agreement among anesthesiologists was weak with 64% of changes made by only a single anesthesiologist. Pre-anesthetic laboratory screening test results may influence pre-operative anesthesia case management but major discrepancies can occur among ACVAA diplomates.

A retrospective analysis of feedlot morbidity and mortality outcomes in calves born to dams with known viral vaccination history

Tye Perrett, Deborah L. Johnson, Jiming Song, Shari van de Pol, Devin A. Dahlman, Ryan D. Rademacher, Sherry J. Hannon, Calvin W. Booker (page 779)

This retrospective analysis aimed to determine the effects of a maternal viral vaccination program (MVVP; Express Verified) on calf health during the feeding period. In low- and high-risk populations, calves born to dams vaccinated pre-breeding with program products had improved morbidity and mortality outcomes compared with non-program animals.

A longitudinal study describing horse demographics and movements during a competition season in Ontario, Canada

Kelsey L. Spence, Terri L. O'Sullivan, Zvonimir Poljak, Amy L. Greer (page 783)

The objective of this study was to describe the demographics and movement patterns of a sample of horses in Ontario, Canada. A convenience sample of 222 owners completed an initial questionnaire to provide demographic information for 570 horses. These horses were enrolled in a longitudinal study to document their movements from May to November 2015 using a monthly questionnaire. The median age of the participating horses was 11 years (IQR: 8 to 16 years). The primary discipline of participating horses included competitive disciplines (63.3%), leisure (33.3%), and racing (3.2%). During the 7-month period, there were 3001 unidirectional movements of horses between facilities. Reasons for travel on/off a facility included attending a competition (38.7%), leisure activities (18.8%), and training (7.5%). The demographic and movement data presented in this study provide insight into the characteristics of a subset of horses in Ontario, and may contribute to outbreak preparedness in the population.

Effects of alfaxalone, thiopental, or propofol and diazepam on laryngeal motion in healthy dogs

Barbara Ambros, M. Casey Gaunt, Tanya Duke-Novakovski, Susan M. Taylor (page 791)

Laryngeal function is assessed by direct visualization of the larynx under a light plane of anesthesia. This study compared the effects of 3 anesthetic protocols on arytenoid motion in healthy dogs. Eight dogs were randomly assigned to receive alfaxalone, propofol and diazepam, or thiopental. Videolaryngoscopy was performed and still images at maximum inspiration and expiration were used to measure the area and height of the glottal gap. The normalized glottal gap area (NGGA = area in pixels/height2 was calculated. The NGAA change was defined as the difference between NGAA during inspiration and exhalation. Data were analyzed using Mann-Whitney and Kruskal-Wallis tests, P-values < 0.05 were considered statistically significant. No significant difference among induction protocols was found when comparing NGGA change after induction or before recovery. Alfaxalone and propofol/diazepam are useful for evaluation of laryngeal function when administered to effect and a light plane of anesthesia is maintained.


(page 703)



Breaking out of the shy silo
Troye McPherson (page 695)


(page 699)


Heather Broughton, Isabelle Vallières (page 705)


(page 719)


Building the antimicrobial stewardship leadership plan for animal health in Canada (workshop, Ottawa, October 3–4, 2017)
Simon J.G. Otto, Jean Szkotnicki, Colleen McElwain, Iyla So, J. Scott Weese, John F. Prescott (page 746)


Compassion does not fatigue!
Trisha Dowling (page 749)


Claw disease in the dog: Does your patient have symmetrical lupoid onychodystrophy (SLO)?
Stephen Waisglass (page 796)


Let the good times roll: Results of the 2017 CVMA practice owners economic survey
Chris Doherty (page 799)


Confidence gained through experience
Brendon Laing (page 803)


Textbook of Veterinary Internal Medicine, 8th edition
Janeen Junaid (page 769)

Self-Assessment Color Review, Veterinary Cytology: Dog, Cat, Horse, and Cow, 2nd edition
Janeen Junaid (page 790)



(page 778)


(page 795)


(page 805)