Assessment of electrocardiographic parameters in healthy dogs undergoing dobutamine stress testing.
Schweiz Arch Tierheilkd
; 147(12): 541-5, 2005 Dec.
Article
em En
| MEDLINE
| ID: mdl-16398192
The electrocardiographic effects of dobutamine stress testing (10 to 40 microg/kg/minute) were investigated in five conscious healthy dogs. We studied the changes in the duration and amplitude of P wave, PR interval, duration of QRS complex, R wave amplitude, QT interval, and heart rate. Development of arrhythmias and ST segment abnormalities were also recorded. It was observed that dobutamine significantly affects atrioventricular-nodal conduction and total electrical systole time at higher infusion rates. Only a single episode of sustained ventricular tachycardia was observed, which was promptly restored to sinus rhythm shortly after dobutamine infusion was discontinued. No ST segment abnormalities were detected. Dobutamine stress testing was concluded to play a role in some ECG parameters at higher infusion rates.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cardiotônicos
/
Dobutamina
/
Cães
/
Eletrocardiografia
/
Teste de Esforço
Limite:
Animals
Idioma:
En
Revista:
Schweiz Arch Tierheilkd
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Suíça