Document Detail


Acute small intestinal obstruction associated with Parascaris equorum infection in young horses: 25 cases (1985-2004).
MedLine Citation:
PMID:  17151735     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: To retrospectively evaluate the medical and surgical records of horses with acute small intestinal obstructions associated with Parascaris equorum infection; to describe the gastrointestinal lesions; and to determine the outcome of cases with such lesions. METHODS: Records of 25 horses with acute small intestinal obstruction associated with P. equorum between 1985 and 2004 were reviewed to determine signalment, history, physical examination, surgical or post-mortem findings, and outcome. RESULTS: All horses except one were less than 12 months old. Standardbreds were over-represented in the population studied. Sixteen horses (72%) had been administered anthelmintics, including pyrantel (n=8), ivermectin (n=7), and trichlorphon (n=1), within 24 h prior to the onset of colic. Of the 25 cases reviewed, 16 had simple obstructive ascarid impactions (SOAIs), and nine had complicated obstructive ascarid impaction (COAI) including volvulus (n=6) or intussusception (n=3), both concurrent with ascarid impaction of the small intestine. Short-term survival (discharge from hospital) occurred in 79% of horses treated for SOAI, and was 64% for all horses. Long-term survival (>1 year) occurred in 33% of horses with SOAI, and the overall long-term survival was 27% for all horses. Formation of adhesions was the most frequent finding associated with death for horses that did not survive long-term. CONCLUSIONS AND CLINICAL RELEVANCE: The incidence of anthelmintic treatment within 24 h of the onset of colic in this study population (72%) was higher than that previously reported. Resistance of P. equorum to ivermectin recently reported in Ontario may be associated with increased ascarid burdens, predisposing horses to ascarid impaction. The long-term survival of these horses was better than that reported previously.
Authors:
N C Cribb; N M Cote; L P Bouré; A S Peregrine
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  New Zealand veterinary journal     Volume:  54     ISSN:  0048-0169     ISO Abbreviation:  N Z Vet J     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-12-07     Completed Date:  2007-01-16     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0021406     Medline TA:  N Z Vet J     Country:  New Zealand    
Other Details:
Languages:  eng     Pagination:  338-43     Citation Subset:  IM    
Affiliation:
Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1. ncribb@ovc.uoguelph.ca
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MeSH Terms
Descriptor/Qualifier:
Animals
Animals, Newborn / parasitology
Anthelmintics / therapeutic use*
Ascaridida Infections / drug therapy,  mortality,  surgery,  veterinary*
Ascaridoidea*
Colic / drug therapy,  mortality,  surgery,  veterinary
Drug Resistance
Female
Horse Diseases / drug therapy,  mortality,  surgery*
Horses
Intestinal Obstruction / drug therapy,  mortality,  surgery,  veterinary*
Intestine, Small / parasitology,  pathology,  surgery
Male
Postoperative Complications / veterinary
Retrospective Studies
Survival Analysis
Time Factors
Treatment Outcome
Chemical
Reg. No./Substance:
0/Anthelmintics

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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