04-27-2008, 09:16 PM
yes Asthma is a relative contraindication for Adenosine
But verapamil is not (bronchioles have beta receptors and ccbs dont act on beta recepotors....so no broncho spasm)
PSVT is a supra vertricular arrythmia....so u can use Verapamil looks like the choice in this qs
In cardiac pharmacology, Calcium channel blockers are considered class IV antiarrhythmic agents. Since Calcium channels are especially concentrated in the sinoatrial and atrio-ventricular nodes, these agents can be used to decrease impulse conduction through the AV node, thus protecting the ventricles from atrial tachyarrhythmias.
http://en.wikipedia.org/wiki/Verapamil
But verapamil is not (bronchioles have beta receptors and ccbs dont act on beta recepotors....so no broncho spasm)
PSVT is a supra vertricular arrythmia....so u can use Verapamil looks like the choice in this qs
In cardiac pharmacology, Calcium channel blockers are considered class IV antiarrhythmic agents. Since Calcium channels are especially concentrated in the sinoatrial and atrio-ventricular nodes, these agents can be used to decrease impulse conduction through the AV node, thus protecting the ventricles from atrial tachyarrhythmias.
http://en.wikipedia.org/wiki/Verapamil