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Clinical ocular findings in cows with malignant catarrhal fever: ocular disease progression and outcome in 25 cases (2007-2010)


Zemljič, T; Pot, S A; Haessig, M; Spiess, B M (2012). Clinical ocular findings in cows with malignant catarrhal fever: ocular disease progression and outcome in 25 cases (2007-2010). Veterinary Ophthalmology, 15(1):46-52.

Abstract

Objective  To describe the ocular clinical signs in a group of cows diagnosed with sheep associated malignant catarrhal fever (MCF), and to investigate a possible correlation between the severity and progression of certain typical clinical signs and disease outcome. Procedure  This prospective study involved cows diagnosed with MCF between 2007 and 2010, and included cows enrolled in a larger clinical trial. Signalment of affected cows, presence and progression of ocular lesions, as well as disease outcome were recorded. Cows were divided into two groups based on the disease outcome: (1) survival and (2) nonsurvival. The degree of corneal edema at first examination was statistically compared between groups. The progression of corneal edema, uveitis and the examining ophthalmologists' subjective assessment of disease progression between the first and last examination were also compared between groups. Results  Twenty-five cows (22 F, 3 M) of six different breeds and one mixed breed were included. Median age was 21 months (range 8-113). Ten cows survived, 13 cows were euthanized, and two died. No statistical association was identified between the degree of corneal edema at the first examination and the disease outcome. Deterioration of corneal edema was not noticed in any of the surviving animals. Anterior uveitis improved in all 10 surviving cows. Conclusions  The degree of corneal edema at first examination had no prognostic value for the disease outcome. The results of this study suggest that the progression of corneal edema correlates well with disease outcome, and that nonimprovement of uveitis is a bad prognostic sign.

Objective  To describe the ocular clinical signs in a group of cows diagnosed with sheep associated malignant catarrhal fever (MCF), and to investigate a possible correlation between the severity and progression of certain typical clinical signs and disease outcome. Procedure  This prospective study involved cows diagnosed with MCF between 2007 and 2010, and included cows enrolled in a larger clinical trial. Signalment of affected cows, presence and progression of ocular lesions, as well as disease outcome were recorded. Cows were divided into two groups based on the disease outcome: (1) survival and (2) nonsurvival. The degree of corneal edema at first examination was statistically compared between groups. The progression of corneal edema, uveitis and the examining ophthalmologists' subjective assessment of disease progression between the first and last examination were also compared between groups. Results  Twenty-five cows (22 F, 3 M) of six different breeds and one mixed breed were included. Median age was 21 months (range 8-113). Ten cows survived, 13 cows were euthanized, and two died. No statistical association was identified between the degree of corneal edema at the first examination and the disease outcome. Deterioration of corneal edema was not noticed in any of the surviving animals. Anterior uveitis improved in all 10 surviving cows. Conclusions  The degree of corneal edema at first examination had no prognostic value for the disease outcome. The results of this study suggest that the progression of corneal edema correlates well with disease outcome, and that nonimprovement of uveitis is a bad prognostic sign.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Equine Department
05 Vetsuisse Faculty > Veterinary Clinic > Department of Farm Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2012
Deposited On:16 Jan 2012 13:09
Last Modified:05 Apr 2016 15:22
Publisher:Wiley-Blackwell
ISSN:1463-5216
Publisher DOI:10.1111/j.1463-5224.2011.00925.x
PubMed ID:22051372
Permanent URL: http://doi.org/10.5167/uzh-55069

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