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31.
JACEK J. de HAAN dvm SHIRLEY B. SHELTON dvm NORMAN ACKERMAN dvm dipiomate acvr 《Veterinary surgery : VS》1993,22(1):1-4
Magnetic resonance imaging was used to diagnose degenerative lumbosacral stenosis in four dogs that had physical and neurologic signs consistent with a cauda equina lesion. Nerve root displacement by protruding disc material and loss of epidural fat were identified. In all dogs, the diagnosis was confirmed by dorsal laminectomy of the lumbosacral area. 相似文献
32.
DENNIS D. CAYWOOD D.V.M. M.S. MICHAEL P. SCHENK M.S. † NORMAN J. WILSMAN D.V.M. Ph.D. ‡ PAULINE L. WONG D.V.M. JAMES P. TOOMBS D.V.M. ALAN J. LIPOWITZ D.V.M. M.S. § 《Veterinary surgery : VS》1980,9(2):74-76
A craniomedial approach to the scapulohumeral joint of the dog is described for the removal of large, intraarticular cartilaginous bodies from the medial aspect of the joint. This technique was used successfully in 4 dogs with chronic osteochondritis dissecans in which the medial aspect of the joint was inaccessible through a standard lateral approach. 相似文献
33.
A dog was presented with a 2 year history of polyuria and polydipsia due to pituitary-dependent hyperadrenocorticism. A low-dose dexamethasone suppression test and measurement of plasma ACTH concentration confirmed the diagnosis. Treatment was instituted with mitotane at 44 mg/kg/day and then 88 mg/kg/d without complete resolution of signs. The dog collapsed with signs consistent with liver disease and was euthanased. Necropsy revealed a phaeochromocytoma of the left adrenal medulla with extensive metastases to the liver. A chromophobe adenoma of the pars intermedia of the pituitary was found. 相似文献
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35.
Interstitial pH and Pressure in the Dependent Biceps Femoris Muscle of Laterally Recumbent Anesthetized Horses 总被引：1，自引：0，他引：1
WENDY M. NORMAN bvsc NICHOLAS H. DODMAN bvms mrcvs MICHAEL H. COURT bvsc 《Veterinary surgery : VS》1988,17(4):234-239
Interstitial pressure and pH in the dependent biceps femoris muscle were measured in anesthetized, laterally recumbent horses. The mean (+/- standard deviation) interstitial pressure in 10 horses was 19.70 +/- 0.15 mmHg in the 30 to 180 minute interval after induction of anesthesia. Pressures of this order have been associated with reduction in muscle perfusion. Mean (+/- standard deviation) interstitial pH in six horses decreased from 7.07 +/- 0.30 to 6.73 +/- 0.21 between 45 and 150 minutes of anesthesia. These results indicated the presence of circulatory compromise to intracompartmental structures. 相似文献
36.
Successful vaccination of sheep against footrot and attempts to eradicate the disease depend on there being a limit to the antigenic diversity of the causative bacterium, Bacteroides nodosus. Fimbrial antigenic variation was therefore investigated in vivo, both under conditions of chronic infection and under the pressure of a vaccine-induced immune response, to ascertain whether this represented an obstacle to such goals. Material was available from 5 experiments and although B. nodosus appeared to have undergone changes in its fimbrial antigens in one of these, the possibility that superinfection was responsible for the variation detected could not be ruled out because all sheep in this case were maintained at pasture. Overall, the results provided no evidence of fimbrial antigenic shift in B. nodosus in vivo and in conclusion, the survival of the organism in the sheep's foot, both in long-term natural infection and following vaccination, must therefore be related to factors other than the ability to undergo antigenic variation in order to evade the host's immune response. 相似文献
37.
Flocks of broiler breeder chickens housed on a commercial farm were monitored from 13 w of age for natural infection with endemic lentogenic Newcastle disease virus (NDV). Seroconversion was first detected at 17 w. By 24 w, all 8 flocks had achieved peak log2 mean haemagglutination inhibiting antibody titres of up to 4.8. Antibody titres then declined and rose again over several months, suggesting cyclic reinfection with NDV. A lentogenic NDV indistinguishable from V4 was isolated from the cloaca of one bird at 18 weeks of age. At 54 weeks of age, 6 of 8 flocks were vaccinated en masse with live V4 NDV vaccine, 3 flocks by drinking water and 3 flocks by aerosol. All flocks were serologically monitored for a further 8 w. Drinking water vaccination induced an anamnestic response in 3 flocks, showing that flocks with pre-existing active immunity to NDV may be successfully vaccinated with V4. However, in all aerosol vaccinated flocks, the procedures failed to induce a response different to that observed in unvaccinated flocks. The serological response to vaccination was greater in sires than in dams. 相似文献
38.
Meat chickens on commercial broiler farms were vaccinated once at 1 to 15 days of age with a live V4 Newcastle disease virus (NDV) vaccine administered by drinking water, aerosol or coarse spray. Hatchmates were housed and similarly vaccinated in laboratory isolation pens. Samples of birds were bled at weekly to fortnightly intervals and the serums tested for haemagglutination inhibiting antibody to NDV. Log2 mean titres of up to 6.26, and assumed protection levels (based on the percentage of birds with log2 titres of 4 or greater) of up to 89%, were obtained in field trials within 4 weeks of vaccination. Differences were observed between the results obtained from parallel field and laboratory trials. The presence of maternal NDV antibody reduced the response to vaccination. The results show that this V4 vaccine can produce an adequate serological response following mass administration to Australian meat chickens housed under commercial conditions. 相似文献
39.
PAULA D. MODRANSKY D.V.M. BARRIE D. GRANT D.V.M. M.S. † NORMAN W. RANTANEN D.V.M. M.S. DOUGLAS G. COREY D.V.M. § 《Veterinary surgery : VS》1982,11(4):129-131
Second phalangeal fractures have been classified as either simple or multiple and have been managed in a variety of ways. The removal of small osteochondral fragments originating from the palmar midsagittal aspect of the proximal second phalanx is reported. This lesion has been described as a coincidental finding unrelated to lameness. Based on our clinical finding of lameness in this case and the response to an intraarticular injection of anesthetic, excision of the fragment was elected. However, the importance of confirming the significance of a radiographic lesion with local anesthesia prior to surgical intervention must be stressed. 相似文献