New incident report
Incident Report Number: 2018-3589
Registrant Reference Number: USA-BAYERBAH-2018-US0042287 (Report 508470)
Registrant Name (Full Legal Name no abbreviations): Bayer inc
Address: 2920 Matheson BLVD
City: Mississaugua
Prov / State: ON
Country: Canada
Postal Code: L5W5R6
Domestic Animal
Country: UNITED STATES
Prov / State: PENNSYLVANIA
PMRA Registration No. PMRA Submission No. EPA Registration No. 11556-155
Product Name: Seresto Large Dog
Other (specify)
COLLARYes
Other Units: Collar
Site: Animal / Usage sur un animal domestique
No
Animal's Owner
Dog / Chien
Maltese
1
Male
14
7.257
kg
Skin
>1 mo <= 6 mos / > 1 mois < = 6 mois
Unknown / Inconnu
System
Persisted until death
Yes
Yes
Unknown
Died
Treatment / Traitement
(eg. description of the frequency and severity of the symptoms
On approximately 21Aug2017 the dog developed a seizure NOS. On approximately 22Aug2017 the dog developed impaired vision. On an unspecified date post 21Aug2017, the dog developed hyperactivity by running around the house soon before developing a seizure (unspecified date(s) and duration of time). On approximately 23Aug2017, the dog was evaluated by a veterinarian, unspecified bloodwork had been performed and an unspecified value on the bloodwork was elevated. Clinical signs continued and on an unspecified date in approximately Sep2017 the dog was evaluated by the veterinarian. The dog was prescribed, administered and continued to be administered an unspecified dose, route and frequency of Phenobarbitol. On approximately 04Dec2017, the dog developed lethargy, anorexia, ataxia (falling over), not urinating, decreased bowel movements, weight loss, and difficulty breathing (unspecified). On 08Dec2017 the dog developed a seizure and approximately 1 minute post clinical sign onset, the dog passed away at home. No necropsy was performed. Due to the sensitive nature of communication, specific relevant event details were not obtained, nor will such be sought. No further information is expected. This case is closed.
Death
N - Unlikely Reported serious neurological disorders of seizures is not anticipated after appropriate topical product administration as the controlled release mechanism assures release of only low doses of active ingredient at a time. But seizures/convulsions were reported in connection with product use in dogs and were requested by authorities to be content of the EU SPC. However, it is known that overdose of 5 collars around the neck of adult dogs for an 8 months period and in 7 week old puppies for a 6 months period did not cause serious signs. This is supported by the extremely low systemic exposure with imidacloprid and flumethrin, particularly during the first week after application. Even with oral product exposure, seizures are not seen. Merely gastrointestinal signs may occur. Any action or treatment may trigger seizures in an animal with a respective disposition. Various etiologies exist for seizure events or paroxysmal signs, e.g. heart disorder, development disorder, metabolic disorder, infection, intoxication, idiopathic epilepsy, trauma, neoplasms. Impaired vision is not expected with appropriate product use as not consistent with product's pharmacological profile. Later reported digestive, behavioural and systemic disorders unspecific and may have numerous other causes. No oral product exposure reported. Additionally reported ataxia is not typically seen with appropriate topical product administration. Even with oral product exposure only transient gastrointestinal signs are expected. Furthermore death is not expected following appropriate topical product application as inconsistent with product's pharmacological profile. Oral exposure to the collar is not expected to cause serious signs either. No signs of anaphylaxis reported which would have occurred in close proximity to the collar application. Moreover time to onset is long for all the reported signs. Even though no necropsy results are available, alternative causes should be considered in the geriatric animal. Overall, considering all aspects, a product relation is unlikely.