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Scansen B.A.,Ohio State University | Kent A.M.,Center Veterinaire | Cheatham S.L.,Heart Center | Cheatham J.D.,Heart Center
Journal of Veterinary Cardiology | Year: 2014

Two dogs with severe dysplastic pulmonary valve stenosis and right-to-left shunting defects (patent foramen ovale, perimembranous ventricular septal defect) underwent palliative stenting of the right ventricular outflow tract and pulmonary valve annulus using balloon expandable stents. One dog received 2 over-lapping bare metal stents placed 7 months apart; the other received a single covered stent. Both procedures were considered technically successful with a reduction in the transpulmonary valve pressure gradient from 202 to 90mmHgin 1 dog and from 168 to 95mmHg in the other. Clinical signs of exercise intolerance and syncope were temporarily resolved in both dogs. However, progressive right ventricular concentric hypertrophy, recurrent stenosis, and erythrocytosis were observed over the subsequent 6 months leading to poor long-term outcomes. Stenting of the right ventricular outflow tract is feasible in dogs with severe dysplastic pulmonary valve stenosis, though further study and optimization of the procedure is required. © 2014 Elsevier B.V. All rights reserved.

Cabon Q.,Center Veterinaire
Compendium (Yardley, PA) | Year: 2013

The iliopsoas muscle is formed by the psoas major and iliacus muscles. Due to its length and diameter, the iliopsoas muscle is an important flexor and stabilizer of the hip joint and the vertebral column. Traumatic acute and chronic myopathies of the iliopsoas muscle are commonly diagnosed by digital palpation during the orthopedic examination. Clinical presentations range from gait abnormalities, lameness, and decreased hip joint extension to irreversible fibrotic contracture of the muscle. Rehabilitation of canine patients has to take into account the inciting cause, the severity of pathology and the presence of muscular imbalances.

Gatineau M.,Center Veterinaire | Dupuis J.,Center Veterinaire | Plante J.,Center Veterinaire | Moreau M.,University of Montreal
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2011

Objective: To determine the rate of subsequent 'pivot shift', meniscal tear and risk factors associated with complications of tibial plateau levelling osteotomy (TPLO) and to assess clinical and owner perception outcome. Study design: Retrospective study. Sample population: Three hundred and forty-eight dogs that had undergone TPLO surgical procedures (n = 476 stifles). Methods: Medical records were reviewed for the retrieval of information on breed, sex, age, body weight, clinical history, radiograph findings, preand postoperative tibial plateau angle, limb alignment, unilateral versus bilateral disease, condition of cranial cruciate ligament (CCL) and menisci, implant material, healing time and complications. Clinical and owner-assessed questionnaire outcomes were also recorded. Results: Forty-six (9.7%) postoperative complications were reported. Twenty (4.2%) were classified as major complications requiring an additional surgical intervention, and 26 (5.5%) as minor complications. No risk factors associated with postoperative complications were identified. Ten (2.1%) subsequent meniscal injuries in the stifles with normal unaltered menisci at time of TPLO were reported with a median postoperative time of 9.5 months. Signs of postoperative 'pivot shift' were reported in 15 (3.1%) stifles. All stifles with a 'pivot shift' had a complete CCL rupture or a debrided partial CCL rupture; a medial menisectomy was identified as a risk factor for a 'pivot shift' (p = 0.02). Dogs with intact medial meniscus had a significantly higher activity level (p <0.0001) and a shorter time to peak function (p = 0.02) than dogs that underwent menisectomy according to an owner questionnaire. Conclusions: Dogs with TPLO and intact meniscus seemed to have a better and faster recovery than dogs with TPLO and menisectomy based on owner questionnaires. 'Pivot shift' was infrequent after TPLO surgery. All dogs with a 'pivot shift' had a complete CCL rupture or a debrided partial CCL rupture and menisectomy was identified as a risk factor for its occurrence. Clinical relevance: Considering the relatively low rate of subsequent meniscal injury after TPLO, systematic medial meniscal release with TPLO may be unnecessary. The 'pivot shift' deserved further investigation to completely understand its mechanism, to identify its anatomic components and potential consequences on the stifle joint. © Schattauer 2011.

Pelosi A.,Michigan State University | Cote E.,University of Prince Edward Island | Cote E.,Center Veterinaire | Eyster G.E.,Michigan State University
Journal of Veterinary Cardiology | Year: 2011

Background: A 10 week-old intact female German shepherd dog was examined because of a heart murmur. Methods: An echocardiogram revealed an extracardiac left-to-right shunt. An angiogram identified shunting between the aorta and the pulmonary artery in an unusual location. Results: Thoracotomy was performed to better identify and correct the lesion; a tubular shunt between the left coronary artery and the pulmonary artery was found and ligated in a closed-heart procedure. The murmur resolved immediately upon ligation and the dog's heart size normalized over a period of several months after surgery. Conclusion: In the dog, surgical correction of a coronary artery-pulmonary artery shunt can be performed without complications and can be associated with reversal of cardiac remodeling. © 2011 Elsevier B.V. All rights reserved.

Gatineau M.,Center Veterinaire | Dupuis J.,Center Veterinaire
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2010

Luxation of the superficial digital flexor muscle tendon (SDFMT) is a rarely reported condition in dogs, and tendon tear concurrent with SDFMT luxation had never been reported. Abnormal conformation of both calcanei and strenuous activity were suspected as contributing factors in this case. Bilateral medial SDFMT luxation was surgically treated with bursa medial incision release, redundant lateral bursa excision and apposition to the edge of the SDFMT with nonabsorbable sutures. The unilateral longitudinal tendon tear of the SDFMT associated with medial SDFMT luxation was successfully treated with horizontal mattress sutures, and a good outcome was reported for both hindlimbs. © Schattauer 2010.

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