Fibrilação atrial em cão associada ao quimiodectoma infiltrativo atrial: relato de caso / Atrial fibrillation in dog associated with an infiltrative chemodectoma in the atrial myocardium: a case report
Arq. bras. med. vet. zootec
; 58(6): 1043-1047, dez. 2006. ilus
Article
in Portuguese
| LILACS
| ID: lil-455047
Responsible library:
BR68.1
RESUMO
Relata-se o caso de um cão, sem raça definida, levado ao veterinário por apresentar cansaço fácil e episódios de síncope. Foram identificadas fibrilação atrial e extra-sístoles ventriculares isoladas ao exame eletrocardiográfico. O tratamento antiarrítmico não foi eficaz, e o animal morreu devido a um episódio de síncope. A necropsia, observou-se massa em região de base cardíaca, invadindo a luz do átrio esquerdo. Histologicamente, constatou-se a presença de quimiodectoma. A infiltração miocárdica atrial causou lesões nos miócitos, produzindo circuitos reentrantes e/ou focos ectópicos de despolarização atrial.
ABSTRACT
This case reports a mongrel dog referred to a veterinarian due to tiredness and syncope episodes. Atrial fibrillation and ventricular premature complex were observed during electrocardiographic exam. The anti-arrhythmic treatment was not effective and the dog died from syncope. At necropsy, a mass invading the internal area of the left atrium was evidenced in the base of the heart. The occurrence of chemodectoma was histologically exhibited. Infiltrations in the atrial myocardium caused alterations in the miocites and produced reentrant circuits and/or atrial depolarization ectopic points.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Atrial Fibrillation
/
Electrocardiography, Ambulatory
/
Paraganglioma, Extra-Adrenal
/
Ventricular Premature Complexes
/
Dogs
Type of study:
Prognostic study
/
Risk factors
Limits:
Animals
Language:
Portuguese
Journal:
Arq. bras. med. vet. zootec
Journal subject:
Veterinary Medicine
Year:
2006
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
UFLA/BR
/
UFMG/BR