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Pereira GF, Fenelon ACG, Horr M, Nogueira GM, Delfiol DJZ. Dural and deep cervical musculature anesthetic blockade for atlantoaxial collection of cerebrospinal fluid in horses. J Equine Vet Sci 2024; 132:104987. [PMID: 38135196 DOI: 10.1016/j.jevs.2023.104987] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 12/24/2023]
Abstract
The analysis of cerebrospinal fluid has diagnostic, prognostic, and therapeutic value in neurological illnesses in horses. There are different methods for obtaining cerebrospinal fluid, with the collection between the C1 and C2 vertebrae being a more recent methodology, which allows the procedure to be performed in standing patients, without the limitations of general anesthesia and with a low contamination of the sample with blood, presenting itself as a practical alternative. This study evaluated the efficacy and safety of a local dural blockade in healthy horses submitted to cerebrospinal fluid collection by atlantoaxial puncture and the quality of the samples obtained by this procedure, which were submitted to physical, chemical, and cytological analyses. The animals were evaluated considering aspects such as pain, sensitivity, the presence of edema, temperature variations, and ultrasonographic alterations post-collection. Discrete local changes were observed after the puncture, and the procedure was considered safe and simple to perform. Lidocaine blockade could reduce the reaction elicited by the needle passing through the dura mater, and the samples obtained showed satisfactory quality and laboratory results consistent with the values compiled in the literature. Transient hyperthermia was observed in 70% (7/10) of the animals in the dural blockade group, and 80%(8/10) of the patients from the control group, totalizing 75% of all individuals evaluated. The rectal temperature alteration was observed 4 to 12 hours after the procedure and was entirely resolved without intervention by the 24-hour evaluation.
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Affiliation(s)
- Gabriella Faria Pereira
- School of Veterinary Medicine - Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | | | - Mônica Horr
- School of Veterinary Medicine - Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil.
| | - Geison Morel Nogueira
- School of Veterinary Medicine - Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil.
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Quattrini C, Scalco R, Vernau W, Dini P, Aleman M. Effect of time and autologous serum addition on the analysis of cerebrospinal fluid in horses. J Vet Intern Med 2023; 37:713-717. [PMID: 36692189 DOI: 10.1111/jvim.16637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 01/06/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Cerebrospinal fluid (CSF) is highly labile and delayed processing might alter results of analysis. HYPOTHESIS/OBJECTIVES To determine the effects of time and addition of autologous serum on cytological evaluation of CSF. ANIMALS Ten client-owned adult horses requiring euthanasia. METHODS Prospective study. Serum and CSF were collected from each horse before and within 10 minutes after euthanasia. CSF samples were divided into 15 aliquots (2 mL each); 1 aliquot was submitted for routine CSF analysis within 60 minutes of collection. Four drops of autologous serum were added to 7 of the aliquots, and stored at 4°C (serum group); the remaining 7 samples were stored unaltered at 4°C (control group). Total nucleated cell count (TNCC) and cell morphology score were done at T4, T8, T12, T24, T48, T72, and T96 hours after collection. Protein concentration was measured in the control group at T0 and T96 hours. RESULTS The cell morphology scores were significantly different in the control group at T48 (median 2, range 0-4), T72 (2, 0-4), and T96 (3, 0-4) in comparison to T0 (1). No change was observed in the serum group. TNCC remained stable over time in both groups. No statistically significant difference in CSF protein concentration was found between T0 and T96. CONCLUSIONS AND CLINICAL IMPORTANCE The addition of autologous serum to an aliquot of CSF sample before shipping improves the preservation of cell morphology up to 96 hours after collection.
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Affiliation(s)
- Camilla Quattrini
- William R. Pritchard Veterinary Medical Teaching Hospital (Quatrini) and Department of Medicine and Epidemiology (Scalco, Aleman), Pathology, Microbiology and Immunology (Vernau), Population, Health and Reproduction (Dini), School of Veterinary Medicine, University of California Davis, Davis, California, USA
| | - Rebeca Scalco
- William R. Pritchard Veterinary Medical Teaching Hospital (Quatrini) and Department of Medicine and Epidemiology (Scalco, Aleman), Pathology, Microbiology and Immunology (Vernau), Population, Health and Reproduction (Dini), School of Veterinary Medicine, University of California Davis, Davis, California, USA
| | - William Vernau
- William R. Pritchard Veterinary Medical Teaching Hospital (Quatrini) and Department of Medicine and Epidemiology (Scalco, Aleman), Pathology, Microbiology and Immunology (Vernau), Population, Health and Reproduction (Dini), School of Veterinary Medicine, University of California Davis, Davis, California, USA
| | - Pouya Dini
- William R. Pritchard Veterinary Medical Teaching Hospital (Quatrini) and Department of Medicine and Epidemiology (Scalco, Aleman), Pathology, Microbiology and Immunology (Vernau), Population, Health and Reproduction (Dini), School of Veterinary Medicine, University of California Davis, Davis, California, USA
| | - Monica Aleman
- William R. Pritchard Veterinary Medical Teaching Hospital (Quatrini) and Department of Medicine and Epidemiology (Scalco, Aleman), Pathology, Microbiology and Immunology (Vernau), Population, Health and Reproduction (Dini), School of Veterinary Medicine, University of California Davis, Davis, California, USA
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Young KAS, Hepworth-Warren KL, Dembek KA. Comparison of Fluid Analysis and Cytologic Findings of Cerebrospinal Fluid Between Three Collection Sites in Adult Equids With Neurological Disease. Front Vet Sci 2022; 9:821815. [PMID: 35558896 PMCID: PMC9087559 DOI: 10.3389/fvets.2022.821815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Cerebrospinal fluid (CSF) is routinely collected from three sites in the horse, the atlanto-occipital (AO), atlantoaxial (AA), and lumbosacral (LS) space. A comparison between fluid analysis parameters [total protein, total nucleated cell count (TNCC), red blood cell (RBC) count, and morphologic analysis] from samples obtained at each of the three sites has not previously been performed. A retrospective analysis was performed to evaluate the differences in fluid analysis of CSF between the AO, AA, and LS sites in equids presented to a referral service for evaluation of suspected neurological disease. A total of 113 equids aged ≥1 year that underwent CSF collection between 2008 and 2020 were included. Total nucleated cell count, RBC concentration, total protein (TP), and morphologic evaluation between CSF samples obtained from the three sites were compared. When comparing all samples, LS centesis was associated with higher RBC compared to other sites (p < 0.05); TP was lower in the AA group than in the LS group (p < 0.05). Within a subset of cytologically unremarkable samples, RBC concentration was highest in LS samples (p < 0.01); TP was higher in LS samples compared to AA samples (p < 0.05) and TNCC was higher (p < 0.01) in AA and LS groups compared to the AO. In cytologically abnormal samples, there were no significant differences between sites in any parameter. Abnormal cytology was correlated with non-survival (p = 0.0002). Non-survival was associated with higher TNCC (p < 0.01). The receiver operating characteristic (ROC) curve for TNCC had an area under the curve of 0.67 (95% CI, 0.55-0.79) and indicated that a cutoff value of 24 cells/μL maximized specificity (72%) and sensitivity (54%) to predict non-survival in all horses. Positive predictive value was 45%; negative predictive value was 78%. The concentration of RBC was higher in samples from the LS site. This has clinical implications due to the importance of comparative diagnostics and its potential impact on cytologic evaluation. There were minimal differences in multiple other parameters between sites, which are likely clinically insignificant.
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Andrade DGAD, Cerri FM, Barbosa GVM, Basso RM, Takahira RK, Pantoja JCDF, Oliveira-Filho JPD, Borges AS. Sequential Cerebrospinal Fluid Sampling in Horses: Comparison of Sampling Times and Two Different Collection Sites. J Equine Vet Sci 2021; 108:103794. [PMID: 34800797 DOI: 10.1016/j.jevs.2021.103794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/11/2021] [Accepted: 10/11/2021] [Indexed: 11/29/2022]
Abstract
Analysis of the cerebrospinal fluid (CSF) is important as a complementary test in horses with neurologic diseases, and sequential analysis may provide information about the treatment response or evolution and quantitative measures of the CSF drug concentration during treatment. The aim of this study was to compare erythrocyte and nucleated cell counts and protein concentration in multiple CSF samples obtained sequentially from two different puncture sites in clinically healthy horses. Eight and 12 horses, with no evidence of neurologic disease, were subjected to CSF collection from the atlanto-occipital (AO) and C1-C2 spaces, respectively. Cytologic and chemical analyses were performed on the CSF obtained at five sampling times (T1, T2, T3, T4, and T5). Repeated measures models were used to compare the mean erythrocyte count, nucleated cell count, and total protein concentration between the AO and C1-C2 groups at each sampling time. C1-C2 CSF had a significantly higher total protein concentration at T1 and T4 than that of AO CSF. All total protein concentration values remained within the reference interval (<90 mg/dL) for all sampling times and groups. No statistical difference was present between results at T2, T3, T4, and T5 and at T1 in both groups for all analyses. In conclusion, five consecutive AO or C1-C2 CSF collections with at least a 7-d interval did not result in alterations in the CSF erythrocyte and nucleated cell counts and total protein concentrations and did not interfere with the CSF analysis results.
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Affiliation(s)
| | - Fabrício Moreira Cerri
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil
| | | | - Roberta Martins Basso
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil
| | - Regina Kiomi Takahira
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil
| | | | - José Paes de Oliveira-Filho
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil
| | - Alexandre Secorun Borges
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil
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Bennell AJ, Bardell D. Asystole associated with cerebrospinal fluid collection in a 3‐month‐old foal under general anaesthesia. EQUINE VET EDUC 2020. [DOI: 10.1111/eve.13345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- A. J. Bennell
- Institute of Veterinary Science University of Liverpool Neston, Cheshire UK
| | - D. Bardell
- Institute of Veterinary Science University of Liverpool Neston, Cheshire UK
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Hurcombe SD, Morris TB, VanderBroek AR, Habecker P, Wulster K, Hopster K. Cervical Epidural and Subarachnoid Catheter Placement in Standing Adult Horses. Front Vet Sci 2020; 7:232. [PMID: 32478105 PMCID: PMC7239991 DOI: 10.3389/fvets.2020.00232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/06/2020] [Indexed: 12/02/2022] Open
Abstract
Horses underwent either cervical epidural space (CES) catheterization or subarachnoid space (SAS) catheterization while restrained in stocks, under deep sedation (detomidine and morphine) and local anesthesia (mepivacaine 2%) block. Catheters were placed under ultrasound guidance with visualization of the dura, SAS, and spinal cord between the first (C1) and second (C2) cervical vertebrae. Following sedation and sterile skin preparation, operator 1 placed under ultrasound guidance, a 6- or 8-inch Tuohy needle with the bevel oriented caudally. For CES, a 6-inch Touhy needle was used with the hanging drop technique to detect negative pressure, and operator 2 then passed the epidural catheter into the CES. For SAS, following puncture of the dura, cerebrospinal fluid (CSF) was aspirated prior to placement of the epidural catheter. Placement into either CES or SAS was confirmed with plain and contrast radiography. Catheters were wrapped for the duration of the study. CSF cytology was assessed up to every 24 h for the study period. Horses were assessed daily for signs of discomfort, neck pain, catheter insertion site swelling, or changes in behavior. A complete postmortem assessment of the spinal tissues was performed at the end of the study period (72 h). Two horses had CES catheters and five horses had SAS catheters placed successfully. All horses tolerated the catheter well for the duration of the study with no signs of discomfort. Ultrasound was essential to assist placement, and radiography confirmed the anatomical location of the catheters. CSF parameters did not change over the study period (P > 0.9). There was evidence of mild meningeal acute inflammation in one horse and hemorrhage in another consistent with mechanical trauma. Placement of an indwelling CES or SAS catheter appears to be safe, technically simple, and well tolerated in standing sedated normal horses.
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Affiliation(s)
- Samuel D Hurcombe
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Tate B Morris
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Ashley R VanderBroek
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Perry Habecker
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Kathryn Wulster
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Klaus Hopster
- Department of Clinical Sciences, New Bolton Center, University of Pennsylvania, Philadelphia, PA, United States
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Chidlow H, Giguère S, Camus M, Wells B, Howerth E, Berghaus R, McConachie Beasley E. Comparison of 2 collection methods for cerebrospinal fluid analysis from standing, sedate adult horses. J Vet Intern Med 2020; 34:972-978. [PMID: 31977116 PMCID: PMC7096653 DOI: 10.1111/jvim.15702] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 01/10/2020] [Indexed: 11/30/2022] Open
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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Affiliation(s)
- Hayley Chidlow
- Department of Large Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Georgia
| | - Steeve Giguère
- Department of Large Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Georgia
| | - Melinda Camus
- Department of Pathology, University of Georgia, College of Veterinary Medicine Athens, Georgia
| | - Bridgette Wells
- Department of Pathology, University of Georgia, College of Veterinary Medicine Athens, Georgia
| | - Elizabeth Howerth
- Department of Pathology, University of Georgia, College of Veterinary Medicine Athens, Georgia
| | - Roy Berghaus
- Department of Population Health, University of Georgia, College of Veterinary Medicine Athens, Georgia
| | - Erin McConachie Beasley
- Department of Large Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Georgia
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State-of-the-Art Diagnostic Methods to Diagnose Equine Spinal Disorders, With Special Reference to Transcranial Magnetic Stimulation and Transcranial Electrical Stimulation. J Equine Vet Sci 2019; 81:102790. [PMID: 31668311 DOI: 10.1016/j.jevs.2019.102790] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 11/21/2022]
Abstract
Spinal cord disorders are a common problem in equine medicine. However, finding the site of the lesion is challenging for veterinarians because of a lack of sensitive diagnostic methods that can assess neuronal functional integrity in horses. Although medical imaging is frequently applied to help diagnose corticospinal disorders, this approach does not reveal functional information. For the latter, transcranial magnetic stimulation (TMS) and more recently transcranial electrical stimulation (TES) can be useful. These are brain stimulation techniques that create either magnetic or electrical fields passing through the motor cortex, inducing muscular responses, which can be recorded either intramuscularly or extramuscularly by needle or surface electrodes. This permits the evaluation of the functional integrity of the spinal motor tracts and the nerve conduction pathways. The interest in TES in human medicine emerged these last years because unlike TMS, TES tends to bypass the motor cortex of the brain and predominantly relies on direct activation of corticospinal and extrapyramidal axons. Results from human medicine have indicated that TMS and TES recordings are mildly if not at all affected by sedation. Therefore, this technique can be reliably used in human patients under either sedation or full anesthesia to assess functional integrity of the corticospinal and adjunct motor tracts. This opens important new avenues in equine medicine.
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Lopes ÉR, Bellegard GM, Cury FS, Abreu FA, Ambrósio CE, Carregaro AB, Hage MCF. Evaluation of the applicability of musculoskeletal ultrasonography of the thoracolumbar and lumbar spine segment of healthy dogs. PESQUISA VETERINÁRIA BRASILEIRA 2018. [DOI: 10.1590/1678-5150-pvb-5620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: Changes in the spine of dogs are usually detected in clinical and in surgical practice. Few studies exist on musculoskeletal ultrasound anatomy of the thoracolumbar and lumbar segments of the normal spine of dogs. This study aimed to compare the normal musculoskeletal ultrasound anatomy of the T10-S1 vertebral segments with images obtained with magnetic resonance imaging (MRI), computed tomography (CT), and anatomical structures, and to establish the ability to identify structures using these modalities. Ultrasound scans allowed visualization of the muscles of the region, articular processes, spinous process, interspinous ligament, and yellow ligament in the lumbosacral window. Computed tomography images provided better bone details, compared to ultrasound images. Low-field MRI allowed the identification of the same structures identified with ultrasound imaging, and allowed the identification of cerebrospinal fluid, transverse processes, and provided improved detail of the intervertebral discs and spinal cord. Knowledge of ultrasound anatomy of the region may allow the the identification of muscle and ligament injuries. Thus, in cities where CT and MRI are inaccessible, ultrasonography of the region could be a good alternative to identify possible changes not observable with radiographic examination or to complement radiographic examination.
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Barberini DJ, Aleman M, Aristizabal F, Spriet M, Clark KC, Walker NJ, Galuppo LD, Amorim RM, Woolard KD, Borjesson DL. Safety and tracking of intrathecal allogeneic mesenchymal stem cell transplantation in healthy and diseased horses. Stem Cell Res Ther 2018; 9:96. [PMID: 29631634 PMCID: PMC5891950 DOI: 10.1186/s13287-018-0849-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 12/14/2022] Open
Abstract
Background It is currently unknown if the intrathecal administration of a high dose of allogeneic mesenchymal stem cells (MSCs) is safe, how MSCs migrate throughout the vertebral canal after intrathecal administration, and whether MSCs are able to home to a site of injury. The aims of the study were: 1) to evaluate the safety of intrathecal injection of 100 million allogeneic adipose-derived MSCs (ASCs); 2) to assess the distribution of ASCs after atlanto-occipital (AO) and lumbosacral (LS) injection in healthy horses; and 3) to determine if ASCs homed to the site of injury in neurologically diseased horses. Methods Six healthy horses received 100 × 106 allogeneic ASCs via AO (n = 3) or LS injection (n = 3). For two of these horses, ASCs were radiolabeled with technetium and injected AO (n = 1) or LS (n = 1). Neurological examinations were performed daily, and blood and cerebrospinal fluid (CSF) were evaluated prior to and at 30 days after injection. Scintigraphic images were obtained immediately postinjection and at 30 mins, 1 h, 5 h, and 24 h after injection. Three horses with cervical vertebral compressive myelopathy (CVCM) received 100 × 106 allogeneic ASCs labeled with green fluorescent protein (GFP) via AO injection and were euthanized 1–2 weeks after injection for a full nervous system necropsy. CSF parameters were compared using a paired student’s t test. Results There were no significant alterations in blood, CSF, or neurological examinations at any point after either AO or LS ASC injections into healthy horses. The radioactive signal could be identified all the way to the lumbar area after AO ASC injection. After LS injection, the signal extended caudally but only a minimal radioactive signal extended further cranially. GFP-labeled ASCs were not present at the site of disease at either 1 or 2 weeks following intrathecal administration. Conclusions The intrathecal injection of allogeneic ASCs was safe and easy to perform in horses. The AO administration of ASCs resulted in better distribution within the entire subarachnoid space in healthy horses. ASCs could not be found after 7 or 15 days of injection at the site of injury in horses with CVCM. Electronic supplementary material The online version of this article (10.1186/s13287-018-0849-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Danielle Jaqueta Barberini
- Veterinary Institute for Regenerative Cures and the Department of Pathology, Microbiology & Immunology, University of California, Davis, USA
| | - Monica Aleman
- Department of Medicine & Epidemiology, University of California, Davis, USA
| | - Fabio Aristizabal
- Department of Surgical & Radiological Sciences, University of California, Davis, USA
| | - Mathieu Spriet
- Department of Surgical & Radiological Sciences, University of California, Davis, USA
| | - Kaitlin C Clark
- Veterinary Institute for Regenerative Cures and the Department of Pathology, Microbiology & Immunology, University of California, Davis, USA
| | - Naomi J Walker
- Veterinary Institute for Regenerative Cures and the Department of Pathology, Microbiology & Immunology, University of California, Davis, USA
| | - Larry D Galuppo
- Department of Surgical & Radiological Sciences, University of California, Davis, USA
| | - Rogério Martins Amorim
- Department of Veterinary Clinics, São Paulo State University "Julio de Mesquita Filho" - UNESP, Botucatu, SP, Brazil
| | - Kevin D Woolard
- Veterinary Institute for Regenerative Cures and the Department of Pathology, Microbiology & Immunology, University of California, Davis, USA
| | - Dori L Borjesson
- Veterinary Institute for Regenerative Cures and the Department of Pathology, Microbiology & Immunology, University of California, Davis, USA.
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Diseases of the Nervous System. Vet Med (Auckl) 2017. [PMCID: PMC7322266 DOI: 10.1016/b978-0-7020-5246-0.00014-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Etienne AL, Delguste C, Busoni V. COMPARISON OF ULTRASOUND-GUIDED VS. STANDARD LANDMARK TECHNIQUES FOR TRAINING NOVICE OPERATORS IN PLACING NEEDLES INTO THE LUMBAR SUBARACHNOID SPACE OF CANINE CADAVERS. Vet Radiol Ultrasound 2016; 57:441-7. [PMID: 27001420 DOI: 10.1111/vru.12358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 12/17/2015] [Accepted: 12/17/2015] [Indexed: 11/26/2022] Open
Abstract
The standard technique for placing a needle into the canine lumbar subarachnoid space is primarily based on palpation of anatomic landmarks and use of probing movements of the needle, however, this technique can be challenging for novice operators. The aim of the current observational, prospective, ex vivo, feasibility study was to compare ultrasound-guided vs. standard anatomic landmark approaches for novices performing needle placement into the lumbar subarachnoid space using dog cadavers. Eight experienced operators validated the canine cadaver model as usable for training landmark and ultrasound-guided needle placement into the lumbar subarachnoid space based on realistic anatomy and tissue consistency. With informed consent, 67 final year veterinary students were prospectively enrolled in the study. Students had no prior experience in needle placement into the lumbar subarachnoid space or use of ultrasound. Each student received a short theoretical training about each technique before the trial and then attempted blind landmark-guided and ultrasound-guided techniques on randomized canine cadavers. After having performed both procedures, the operators completed a self-evaluation questionnaire about their performance and self-confidence. Total success rates for students were 48% and 77% for the landmark- and ultrasound-guided techniques, respectively. Ultrasound guidance significantly increased total success rate when compared to the landmark-guided technique and significantly reduced the number of attempts. With ultrasound guidance self-confidence was improved, without bringing any significant change in duration of the needle placement procedure. Findings indicated that use of ultrasound guidance and cadavers are feasible methods for training novice operators in needle placement into the canine lumbar subarachnoid space.
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Affiliation(s)
- Anne-Laure Etienne
- Diagnostic Imaging Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
| | - Catherine Delguste
- General Services of Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
| | - Valeria Busoni
- Diagnostic Imaging Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
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13
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Etienne AL, Audigié F, Peeters D, Gabriel A, Busoni V. Ultrasonographic percutaneous anatomy of the atlanto-occipital region and indirect ultrasound-guided cisternal puncture in the dog and the cat. Anat Histol Embryol 2014; 44:92-8. [PMID: 24712312 DOI: 10.1111/ahe.12113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Accepted: 02/20/2014] [Indexed: 11/29/2022]
Abstract
Cisternal puncture in dogs and cats is commonly carried out. This article describes the percutaneous ultrasound anatomy of the cisternal region in the dog and the cat and an indirect technique for ultrasound-guided cisternal puncture. Ultrasound images obtained ex vivo and in vivo were compared with anatomic sections and used to identify the landmarks for ultrasound-guided cisternal puncture. The ultrasound-guided procedure was established in cadavers and then applied in vivo in seven dogs and two cats. The anatomic landmarks for the ultrasound-guided puncture are the cisterna magna, the spinal cord, the two occipital condyles on transverse images, the external occipital crest and the dorsal arch of the first cervical vertebra on longitudinal images. Using these ultrasound anatomic landmarks, an indirect ultrasound-guided technique for cisternal puncture is applicable in the dog and the cat.
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Affiliation(s)
- A-L Etienne
- Diagnostic Imaging Section, Faculty of Veterinary Medicine, Liège University, Boulevard de Colonster, 20, Bât. B41, 4000, Liège, Belgium
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Depecker M, Bizon-Mercier C, Couroucé-Malblanc A. Ultrasound-guided atlanto-occipital puncture for cerebrospinal fluid analysis on the standing horse. Vet Rec 2013; 174:45. [PMID: 24225443 DOI: 10.1136/vr.101758] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The atlanto-occipital site (AO) is convenient for retrieving an adequate volume and quality of cerebrospinal fluid (CSF) in the diagnosis of neurological disease in horses. However, general anaesthesia is not always possible for horses displaying severe neurological signs, or for economical reasons. The objectives of the present work were to determine the feasibility and safety of ultrasound-guided CSF puncture at the AO site on the standing horse. Seven horses (six healthy and one mildly ataxic) were sedated with acepromazine (0.02 mg/kg bodyweight intravenously or 0.04 mg/kg bodyweight intramuscularly) and detomidine (0.01 mg/kg bodyweight intravenously), and placed in stocks or in a recovery stall with the head kept on a headstand. Puncture was performed by ultrasonographic guidance with a parasagittal technique, as previously described, using a 20 g, 3.5 inch spinal needle. In all horses, no adverse reaction was observed when crossing the dura mater and 20 ml of CSF was rapidly retrieved without any blood contamination. Ultrasound-guided CSF puncture can be performed easily at the AO site on a healthy standing horse. Regarding the potential risk of this procedure, safety measures and close observation are essential. Further studies on a larger amount of ataxic horses are also required before considering this technique as an alternative option for CSF puncture.
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Affiliation(s)
- M Depecker
- L. Université, ONIRIS, Centre International de Santé du Cheval d'ONIRIS (CISCO), Atlanpôle - La Chantrerie, BP40706, Nantes F-44307, France
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Pease A, Behan A, Bohart G. Ultrasound-guided cervical centesis to obtain cerebrospinal fluid in the standing horse. Vet Radiol Ultrasound 2012; 53:92-5. [PMID: 21831242 DOI: 10.1111/j.1740-8261.2011.01855.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Horses with intracranial lesions and severe ataxia are not good anesthesia candidates; however, only one method to obtain cerebrospinal fluid (CSF) from the cervical region in a standing horse has been reported. This method is not performed routinely due to the difficulty for sample acquisition. Our hypothesis is that standing cervical centesis can be performed in horses without complication. Ultrasound-guided centesis of the CSF between C1 and C2 in 11 clinically normal horses and two horses with neurologic signs were performed. Horses were sedated and ultrasound was used to identify the subarachnoid space and spinal cord between C1 and C2. With ultrasound guidance, a needle was introduced into the dorsal aspect of the subarachnoid space using a lateral approach. Ten milliliters of CSF was obtained and analyzed. Two normal horses in this study had moderate red blood cell contamination in the CSF (940 and 612 RBC/microl). One horse had 11 RBC/microl and the remaining horses had < 4 RBC/microl. The total procedure time was approximately 2 min. No reaction was observed and no complications were detected up to 48 h after the procedure. Ultrasound-guided centesis between C1 and C2 is a rapid procedure that causes minimal to no reaction in standing, sedated horses used in this study. The use of ultrasound to guide a standing C1-2 centesis of the subarachnoid space provides an additional route to obtain CSF for analysis in the equine patient.
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Affiliation(s)
- Anthony Pease
- College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA.
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Gardner RB. Evaluation and Management of the Recumbent Adult Horse. Vet Clin North Am Equine Pract 2011; 27:527-43. [DOI: 10.1016/j.cveq.2011.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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ETIENNE ANNELAURE, PEETERS DOMINIQUE, BUSONI VALERIA. ULTRASONOGRAPHIC PERCUTANEOUS ANATOMY OF THE CAUDAL LUMBAR REGION AND ULTRASOUND-GUIDED LUMBAR PUNCTURE IN THE DOG. Vet Radiol Ultrasound 2010; 51:527-32. [DOI: 10.1111/j.1740-8261.2010.01705.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Ultrasound-guided periarticular injections of the sacroiliac region in horses: A cadaveric study. Equine Vet J 2010; 40:160-6. [DOI: 10.2746/042516408x245252] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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