ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01066.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01067.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Twenty‐three shoulders of 21 dogs were treated arthroscopically for osteochondritis dissecans (OCD). Thirteen dogs had bilateral lesions detectable radiographically; however, only two dogs had arthroscopic surgery on both shoulders. Arthroscopic procedures included removal of the osteochondral flap, curettage of the subchondral defect, and partial synovectomy. Fourteen dogs were using the treated limb within 1 day and eight dogs within 2 days, although some lameness may have persisted for several weeks. Force plate evaluation was effective for comparison of preoperative and postoperative mean peak force/body weight (PF/BW) values. Improvement was detected objectively in 9 of the 10 dogs returned for postoperative force plate analysis. All owners were satisfied with the cosmetic results and the rapid return to functio

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01068.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Osteotomies were created in the left body of the mandible of nine dogs and immediately stabilized with either a six hole dynamic compression bone plate or an intramedullary pin. Cortical bone healing and vascular supply were evaluated at weeks 2, 5, and 10 by microradiography, microangiography, and correlated histology of selected mandibular slices. Perforating arterioles from the buccal mucosa maintained vascular supply to rostral mandibular segments. The mandibular body rostral to the osteotomy site and caudal to the canine tooth suffered an interruption of vascular supply that was replaced by a temporary extraosseous supply during healing of the osteotomy. Intramedullary pin placement resulted in destruction of rostral teeth. There was an inflammatory response around the rostral portion of all intramedullary pins. Osteotomy sites involving tooth roots resulted in no disruption of the normal vascular or neural structures of the tooth pulp.

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01069.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Sixty‐four dogs with caudal cervical spondylomyelopathy (CCSM) caused by chronic degenerative disc disease were treated with ventral decompression (n = 20), linear traction and interbody screw stabilization (n = 7), or linear traction and plastic plate stabilization (n = 37). Interbody screw stabilization was ineffective in treating CCSM because of an unacceptably high rate of implant failures. Ventral decompression or linear traction and plastic plate stabilization were effective in the treatment of most patients with mild to moderate neurologic deficits (neck pain, paraparesis, or ambulatory tetraparesis). Although these techniques were also used successfully in some patients with severe neurologic deficits (weakly ambulatory tetraparesis or nonambulatory tetraparesis), variable success rates and prolonged postoperative recovery periods were note

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01070.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Total colectomy with end‐to‐end ileorectal anastomosis was performed in eight healthy adult cats. Hydration status, body weight, attitude, appetite, and stool consistency were monitored for 24 weeks. Ileal water absorption was determined at weeks 1, 6, 12, 18, and 24 using the double‐lumen catheter intestinal perfusion technique with polyethylene glycol as the indicator substance. Bowel adaptation was evaluated by histologic morphometric analysis of full‐thickness ileal biopsies taken at the time of total colectomy and at weeks 6, 12, 18, and 24. The anastomoses were examined at necropsy for evidence of leakage and development of strictures. All cats resumed normal activity in 48 hours and maintained or gained weight during the study. Small volumes of watery diarrhea were present immediately after surgery, but by week 1 all cats had a semi‐solid nonformed stool. At month 2, three cats developed semi‐solid formed stools. One cat had occasional perineal soiling and five cats had at least one episode of hematochezia. There was improvement in ileal water absorption in two cats, and there were significant increases in villus height, enterocyte height, and enterocyte density in all cats. Results of postmortem examination of the anastomosis showed no evidence of stricture

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01071.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Paired skin incisions were made on each side of four cats and closed with either interrupted polypropylene sutures or adhesive polyurethane membrane. The healing of these wounds was compared by gross appearance, break strength determination, and histologic examination. The adhesive polyurethane membranes were quicker and easier to apply, producing a more uniform closure than sutures both clinically and histologically. They adhered strongly to the skin, supporting more wound length than sutures for the first 7 days. There were no differences in break strength between closure techniques. Histologically, the wounds closed with adhesive polyurethane membrane were characterized by a milder inflammatory reaction and greater vascular infiltration than sutured wounds, especially early in the healing period.

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01072.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Calcinosis circumscripta associated with polydioxanone suture material was diagnosed in two young dogs. In each case, the owner noticed a firm mass at the site of a previous surgical incision. Mineralization of soft tissues was visible radiographically. At excision, multiple chalky white nodular masses within the subcutis extended in a linear pattern the length of the sutured incision, but not beyond it. Polydioxanone suture was identified within the center of the nodules, which were identified histologically as calcinosis circumscripta.

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01073.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01074.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Palmar digital arteries and veins removed surgically from healthy horses under general anesthesia were cut into 4 mm vascular rings, suspended in tissue baths, and attached to force displacement transducers for continuous measurement of vascular tension.In vitrovascular responses were determined for acetylcholine, acepromazine, isoxsuprine hydrochloride (isoxsuprine), prostaglandin E2(PGE2), and prostaglandin I2(prostacyclin). After preconstriction with norepinephrine hydrochloride (norepinephrine), or prostaglandin F2alpha (PGF2alpha), the concentrations needed to produce 50% maximum relaxation (EC50) and the maximum percentage of relaxation were determined for each drug.Acetylcholine was the most potent arterial vasodilator (smallest EC50value) and PGE2was the least potent. Prostacyclin was the least potent venodilator (highest EC50value); there were no differences between acetylcholine, acepromazine, isoxsuprine, and PGE2. Isoxsuprine produced greater arterial relaxation than all other agents. Isoxsuprine and acepromazine produced significantly greater venous relaxation than did acetylcholine and PGE2. Prostacyclin produced minimal vasodilation of arteries or veins. Acepromazine and isoxsuprine relaxed the veins significantly more than the arteries. When PGF2alpha was used instead of norepinephrine to preconstrict the arteries and veins, the potency and effectiveness of acepromazine and isoxsuprine to produce vasodilation were significantly decreased. Results indicate that acepromazine and isoxsuprine can relax the equine digital vasculature but their effectiveness varies depending on the origin of the constriction.

ISSN:0161-3499    

DOI:10.1111/j.1532-950X.1989.tb01075.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY