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Peer-reviewed veterinary case report

Baclofen poisoning symptoms and outcomes in dogs and cats

By Khorzad, Roxanna et al.·Published in Journal of the American Veterinary Medical Association·2012·Section of Emergency and Critical Care, United States·View original on PubMed

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Original publication title: Baclofen toxicosis in dogs and cats: 145 cases (2004-2010).

Species:
dog
Dog vomitingStomach & digestionDogs

Plain-English summary

A group of 140 dogs and 5 cats showed signs of baclofen poisoning after ingesting the medication, which is often used to treat muscle spasms. Most pets displayed symptoms affecting their nervous system, including lethargy and coordination issues, along with gastrointestinal problems like vomiting. The survival rate for dogs was about 84%, with those that ingested less baclofen having a better chance of recovery. Treatment typically involved supportive care, and many pets improved after receiving veterinary attention.

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Abstract

OBJECTIVE: To identify dogs and cats with baclofen toxicosis and characterize the patient population, clinical signs, and outcome. DESIGN: Retrospective case series. ANIMALS: 140 dogs and 5 cats with baclofen toxicosis. PROCEDURES: An animal poison control center electronic database was reviewed from November 2004 through April 2010 to identify dogs and cats with baclofen toxicosis. Information on signalment, clinical signs, and amount of baclofen ingested was obtained. Clinical signs were categorized as CNS, gastrointestinal, general malaise, cardiovascular, respiratory, or urogenital. Follow-up communications were performed to determine overall outcome. RESULTS: Dogs had a median age of 0.67 years (range, 0.1 to 15 years) and cats of 1 year (range, 0.7 to 16 years). Of 145 patients, 133 (92%) developed clinical signs of baclofen toxicosis. A total of 259 signs fell within defined categories: CNS (121/259 [46.7%]), gastrointestinal (69/259 [26.6%]), general malaise (27/259 [10.4%]), cardiovascular (23/259 [8.9%]), respiratory (14/259 [5.4%]), and urogenital (5/259 [1.9%]). For 68 dogs with known survival status, survival rate was 83.8% (57/68); of these dogs, the amount of baclofen ingested was known for 53 (46 survivors and 7 nonsurvivors). Amount of baclofen ingested was significantly lower in survivor dogs (median, 4.2 mg/kg [1.91 mg/lb]; range, 0.61 to 61 mg/kg [0.28 to 27.7 mg/lb]), compared with nonsurvivor dogs (median, 14 mg/kg [6.4 mg/lb]; range, 2.3 to 52.3 mg/kg [1.04 to 23.77 mg/lb]. Of 5 cats, 2 survived, 1 died, and 2 had unknown outcomes. CONCLUSIONS AND CLINICAL RELEVANCE: Clinical signs of baclofen toxicosis occurred in most patients, with the CNS being the system most commonly affected.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/23039981/