Cardiac consequences and treatment of disopyramide intoxication: experimental evaluation in dogs.
Cardiovasc Res
; 13(11): 630-4, 1979 Nov.
Article
em En
| MEDLINE
| ID: mdl-519665
ABSTRACT
A slow (1.18 mumol.kg-1.mm-1) intravenous infusion of disopyramide (mol.wt 339) was given to 8 adult Beagle dogs. An initial phase of slow decline in cardiac output and broadening of the QRS complex on the ECG, with systolic blood pressure maintained above 13.5 kPa (100 mmHg), was followed by a phase of rapid circulatory failure without a correspondingly dramatic change in ECG appearances. Underventilation and cardiac arrhythmias were observed only in the agonal phase after several minutes of circulatory arrest. They were not therefore the primary cause of death, which was due to failure of myocardial contractility. Three positively inotropic drugs (isoprenaline, dopamine, and glucagon) are shown to be capable of restoring the failing circulation, provided they are given before the phase of complete circulatory standstill. In this respect isoprenaline appears superior to dopamine and glucagon.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Piridinas
/
Disopiramida
/
Parada Cardíaca
/
Insuficiência Cardíaca
Limite:
Animals
Idioma:
En
Ano de publicação:
1979
Tipo de documento:
Article