Clinical findings, treatment, and outcome of dogs with status epilepticus or cluster seizures: 156 cases (1990-1995) |
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| Authors: | Bateman S W Parent J M |
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| Institution: | Department of Veterinary Clinical Studies, Ontario Veterinary College, University of Guelph, Canada. |
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| Abstract: | OBJECTIVE: To report clinical findings, treatments, and outcomes of dogs admitted to the hospital for status epilepticus or cluster seizures and evaluate factors associated with outcome. DESIGN: Retrospective study. ANIMALS: 156 dogs admitted for status epilepticus or cluster seizures. PROCEDURE: Medical records were reviewed for seizure and medication history, diagnostic test results, types of treatment, hospitalization costs, and outcome of hospital visits. RESULTS: Dogs were admitted for seizures on 194 occasions. Of 194 admissions, 128 (66%), 2 (1%), 32 (16.5%), 2 (1%), and 30 (15.5%) were of dogs with a history of clusters of generalized seizures, clusters of partial complex seizures, convulsive status epilepticus, partial status epilepticus, and > 1 type of seizure, respectively. Underlying causes of seizures were primary epilepsy (26.8%; 52/194), secondary epilepsy (35.1%; 68), reactive epileptic seizures (6.7%; 13), primary or secondary epilepsy with low serum antiepileptic drug concentrations (5.7%; 11), and undetermined (25.8%; 50). One hundred and eighty-six hospital visits resulted in admission to the intensive care unit (ICU). Treatments with continuous i.v. infusions of diazepam or phenobarbital were initiated during 66.8% (124/186) and 18.7% (35) of ICU hospital stays for 22.3 +/- 16.1 hours (mean +/- SD) and 21.9 +/- 15.4 hours, respectively. Of 194 admissions, 74.7% (145) resulted in discharge from the hospital, 2.1% (4) in death, and 23.2% (45) in euthanasia. A poor outcome (death or euthanasia) was significantly associated with granulomatous meningoencephalitis, loss of seizure control after 6 hours of hospitalization, and the development of partial status epilepticus. CONCLUSIONS AND CLINICAL RELEVANCE: Granulomatous meningoencephalitis, loss of seizure control after 6 hours of hospitalization, or the development of partial status epilepticus may indicate a poor prognosis for dogs with seizures. |
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