Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses

Abstract Background Cerebrospinal fluid (CSF) analysis is an important component of the evaluation of horses with neurologic disease. Lumbosacral (LS) centesis is routine, but CSF is also collected from the space between the first and second cervical vertebrae (C1‐C2). Objectives To compare collecti...

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Main Authors: Hayley Chidlow, Steeve Giguère, Melinda Camus, Bridgette Wells, Elizabeth Howerth, Roy Berghaus, Erin McConachie Beasley
Format: Article
Language:English
Published: Wiley 2020-03-01
Series:Journal of Veterinary Internal Medicine
Subjects:
Online Access:https://doi.org/10.1111/jvim.15702
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author Hayley Chidlow
Steeve Giguère
Melinda Camus
Bridgette Wells
Elizabeth Howerth
Roy Berghaus
Erin McConachie Beasley
author_facet Hayley Chidlow
Steeve Giguère
Melinda Camus
Bridgette Wells
Elizabeth Howerth
Roy Berghaus
Erin McConachie Beasley
author_sort Hayley Chidlow
collection DOAJ
description Abstract Background Cerebrospinal fluid (CSF) analysis is an important component of the evaluation of horses with neurologic disease. Lumbosacral (LS) centesis is routine, but CSF is also collected from the space between the first and second cervical vertebrae (C1‐C2). Objectives To compare collection times, CSF cytology results, and equine protozoal myelitis (EPM) titers of CSF collected from the C1‐C2 and LS sites. Animals Fifteen university‐owned adult horses with no evidence of neurologic disease, and 9 horses with signs of neurologic disease: 3 university‐owned and 6 client‐owned. Methods Prospective study. Cerebrospinal fluid collection from the LS space and C1‐C2 space of each horse was performed in randomized order. Continuous data were analyzed using mixed‐effects linear models and count data using mixed‐effects negative binomial regression. Statistical significance was set at P < .05. Results Cerebrospinal fluid collected from the C1‐C2 site had a significantly lower mean protein concentration (49 [95% CI: 43‐55.8] mg/dL C1‐C2 versus 52.1 [95% CI: 45.7‐59.3] mg/dL LS; P = .03) and red blood cell count (6 [95% CI: 2‐16] cells/μL versus 33 [95% CI: 13‐81] cells/μL; P = .02). Collection time, total nucleated cell count, EPM titers, and serum:CSF EPM titer ratios were not significantly different between collection sites. Conclusions and Clinical Importance Cerebrospinal fluid from the C1‐C2 space provides an acceptable alternative to LS CSF collection with decreased likelihood of clinically important blood contamination of samples.
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spelling doaj.art-e76afb4dc1794b08bf2988ea5c64d8d42022-12-21T23:19:59ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762020-03-0134297297810.1111/jvim.15702Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horsesHayley Chidlow0Steeve Giguère1Melinda Camus2Bridgette Wells3Elizabeth Howerth4Roy Berghaus5Erin McConachie Beasley6Department of Large Animal Medicine and Surgery University of Georgia, College of Veterinary Medicine GeorgiaDepartment of Large Animal Medicine and Surgery University of Georgia, College of Veterinary Medicine GeorgiaDepartment of Pathology University of Georgia, College of Veterinary Medicine Athens GeorgiaDepartment of Pathology University of Georgia, College of Veterinary Medicine Athens GeorgiaDepartment of Pathology University of Georgia, College of Veterinary Medicine Athens GeorgiaDepartment of Population Health University of Georgia, College of Veterinary Medicine Athens GeorgiaDepartment of Large Animal Medicine and Surgery University of Georgia, College of Veterinary Medicine GeorgiaAbstract Background Cerebrospinal fluid (CSF) analysis is an important component of the evaluation of horses with neurologic disease. Lumbosacral (LS) centesis is routine, but CSF is also collected from the space between the first and second cervical vertebrae (C1‐C2). Objectives To compare collection times, CSF cytology results, and equine protozoal myelitis (EPM) titers of CSF collected from the C1‐C2 and LS sites. Animals Fifteen university‐owned adult horses with no evidence of neurologic disease, and 9 horses with signs of neurologic disease: 3 university‐owned and 6 client‐owned. Methods Prospective study. Cerebrospinal fluid collection from the LS space and C1‐C2 space of each horse was performed in randomized order. Continuous data were analyzed using mixed‐effects linear models and count data using mixed‐effects negative binomial regression. Statistical significance was set at P < .05. Results Cerebrospinal fluid collected from the C1‐C2 site had a significantly lower mean protein concentration (49 [95% CI: 43‐55.8] mg/dL C1‐C2 versus 52.1 [95% CI: 45.7‐59.3] mg/dL LS; P = .03) and red blood cell count (6 [95% CI: 2‐16] cells/μL versus 33 [95% CI: 13‐81] cells/μL; P = .02). Collection time, total nucleated cell count, EPM titers, and serum:CSF EPM titer ratios were not significantly different between collection sites. Conclusions and Clinical Importance Cerebrospinal fluid from the C1‐C2 space provides an acceptable alternative to LS CSF collection with decreased likelihood of clinically important blood contamination of samples.https://doi.org/10.1111/jvim.15702centesiscervicalequinelumbosacralneurologic diagnostics
spellingShingle Hayley Chidlow
Steeve Giguère
Melinda Camus
Bridgette Wells
Elizabeth Howerth
Roy Berghaus
Erin McConachie Beasley
Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
Journal of Veterinary Internal Medicine
centesis
cervical
equine
lumbosacral
neurologic diagnostics
title Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
title_full Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
title_fullStr Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
title_full_unstemmed Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
title_short Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses
title_sort comparison of 2 collection methods for cerebrospinal fluid analysis from standing sedate adult horses
topic centesis
cervical
equine
lumbosacral
neurologic diagnostics
url https://doi.org/10.1111/jvim.15702
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