Prospective survey of tick paralysis in dogs

Atwell, RB, Campbell, FE and Evans, EA (2001) Prospective survey of tick paralysis in dogs. Australian Veterinary Journal, 79 6: 412-418. doi:10.1111/j.1751-0813.2001.tb12986.x

Author Atwell, RB
Campbell, FE
Evans, EA
Title Prospective survey of tick paralysis in dogs
Journal name Australian Veterinary Journal   Check publisher's open access policy
ISSN 0005-0423
Publication date 2001-01-01
Sub-type Article (original research)
DOI 10.1111/j.1751-0813.2001.tb12986.x
Open Access Status DOI
Volume 79
Issue 6
Start page 412
End page 418
Total pages 7
Editor Colin Wilks
Place of publication Victoria
Publisher Australian Veterinary Association
Language eng
Subject C1
300501 Veterinary Medicine
670502 Diagnostics
Abstract Objective To obtain information on tick paralysis in dogs, including the nature of disease, host signalment, tick-host relationship, treatment, disease progression and recovery, and preventive measures. Design A prospective survey of 577 dogs affected by tick paralysis was conducted during 1998. Forty-two veterinary clinics along the eastern coast of Australia were instructed to complete survey forms for the first 15 dogs that presented with tick paralysis during September to November. Results Five percent of dogs died from tick paralysis. Younger dogs were more likely to survive. Long coat length was associated with a greater tick burden but not greater tick size, whereas coat thickness had no bearing on either. Dogs with mild disease recovered more quickly from tick paralysis. Respiratory and gait scores reflected disease severity and were good prognostic indicators. The size of the tick did not reflect the severity of the clinical condition it induced in the host. No method of tick removal or in situ treatment improved recovery time or reduced mortality. However, the time spent in hospital was significantly less for dogs from which the live tick was manually removed. Inspiratory strider. evident in some dogs with tick paralysis, was not related to tick attachment on the neck. The use of acepromazine maleate or dexamethasone did not reduce recovery time or mortality. Increasing the dose of tick antitoxin serum (TAS) above 0.1 mL/kg had no effect on mortality or recovery time. Dogs with severe disease that received an additional dose of TAS were significantly less likely to survive. Subcutaneous use of TAS at the site of tick attachment was of no benefit in reducing mortality or time to initial clinical improvement. A registered preventative product had not been used on the majority of dogs. Clipping the coat to search for ticks did not reduce mortality. Conclusions Therapy needs to address cardiopulmonary dysfunction that may be due directly to the effect of tick toxin and not just respiratory compromise caused by progressive respiratory muscle failure.
Keyword Tick Paralysis
Veterinary Sciences
Australian Paralysis Tick
Ixodes Holocyclus
Gait Score
Respiratory Score
Tick Antitoxin Serum
Acepromazine Maleate
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Veterinary Science Publications
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Created: Wed, 15 Aug 2007, 02:23:35 EST