Isoproterenol is a synthetic catecholamine. It acts primarily on Beta adrenergic receptors.
Mechanism of Action
A potent, synthetic catecholamine that increases HR in bradycardia that are refractory to Atropine. Increases cardiac contractile force, causes bronchodilation.
Onset of Action
Bradycardias refractory to Atropine
Should not be used to increase blood pressure in cardiogenic shock.
Ventricular irritability, can be deactivated by alkaline solutions, should be used with caution for recent MI, external pacing, if available, should be used instead of isoproterenol. But may be going back to "meds" to increase rate to TCP no being as effective as once thought.