Adenoscan Disease Interactions

The use of adenosine is contraindicated in patients with second- or third-degree AV block, sick sinus syndrome, or symptomatic bradycardia in the absence of a functional artificial pacemaker.

Antiarrhythmic agents can induce severe hypotension (particularly with IV administration) or induce or worsen congestive heart failure (CHF). Patients with primary cardiomyopathy or inadequately compensated CHF are at increased risk. Antiarrhythmic agents should be administered cautiously and dosage and/or frequency of administration modified in patients with hypotension or adequately compensated CHF. Alternative therapy should be considered unless these conditions are secondary to cardiac arrhythmia.

Adenosine induces mast cell degranulation and histamine release. Bronchoconstriction has been reported in patients with asthma during therapy with adenosine. Therapy with adenosine should be administered cautiously in patients with obstructive lung disease not associated with bronchoconstriction (emphysema or bronchitis) and should be avoided in patients with bronchoconstriction or bronchospasm (asthma).