Indications
Adenosine injection, USP is indicated as an adjunct to thallium-201 myocardial perfusion scintigraphy in patients unable to exercise adequately. Adenosine injection, USP a pharmacologic stress agent, is indicated as an adjunct to thallium-201 myocardial perfusion scintigraphy in patients unable to exercise adequately ( 1 )
Contre-indications
Adenosine is contraindicated in patients with: Second- or third-degree AV block (except in patients with a functioning artificial pacemaker) [see Warnings and Precautions ( 5.2 )] Sinus node disease, such as sick sinus syndrome or symptomatic bradycardia (except in patients with a functioning artificial pacemaker) [see Warnings and Precautions ( 5.2 )] Known or suspected bronchoconstrictive or bronchospastic lung disease (e.g., asthma) [see Warnings and Precautions ( 5.3 )] Known hypersensitivity to adenosine [see Warnings and Precautions ( 5.7 )] Second- or third-degree AV block (except in patients with a functioning artificial pacemaker) ( 4 ) Sinus node disease, such as sick sinus syndrome or symptomatic bradycardia (except in patients with a functioning artificial pacemaker) ( 4 ) Known or suspected bronchoconstrictive or bronchospastic lung disease (e.g., asthma) ( 4 ) Known hypersensitivity to adenosine ( 4 )
Mises en garde et précautions d’emploi
Cardiac Arrest, Ventricular Arrhythmias, and Myocardial Infarction . Fatal cardiac events have occurred. Avoid use in patients with symptoms or signs of acute myocardial ischemia. Appropriate resuscitative measures should be available ( 5.1 ) Sinoatrial (SA) and Atrioventricular (AV) Nodal Block . First-, second- or third-degree AV block, or sinus bradycardia can occur. Discontinue adenosine if patient develops persistent or symptomatic high-grade AV block ( 5.2 ) Bronchoconstriction .
Can induce dyspnea, bronchoconstriction, and respiratory compromise, especially in patients with obstructive pulmonary disease. Discontinue adenosine if patient develops severe respiratory difficulties ( 5.3 ) Hypotension . Significant hypotension can occur. Discontinue adenosine if patient develops persistent or symptomatic hypotension ( 5.4 ) Cerebrovascular Accidents . Hemorrhagic and ischemic cerebrovascular accidents have occurred ( 5.5 ) Seizures .



