OCEMS Pharmacology - Drug Guide Questions and Correct Verified Answers Latest Version
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Course
OCEMS
Institution
OCEMS
Adenosine Classification
Antiarrhythmic
Adenosine Mech of Action
Depress automaticity in sinus node and Purkinje fibers
Slows AV conduction and interrupts reentry pathways thru AV node
Immed onset w/ duration less than 10 sec
Adenosine Indications
Narrow complex tachycardia w/ reg...
✓ Must flush by injecting the NS flush, running the IV wide open is not an
adequate flush
✓
✓ History of "sick sinus" syndrome, 2nd or 3rd degree heart block without
pacemaker **reactive airway disease (asthma/COPD) may have
bronchospasm
✓
✓ Does not convert atrial flutter or fibrillation;
✓
✓ Persantine (Dipyridamole) and Tegretol can cause a heart block-need
to use a lower dose
✓
✓ Due to denervation of heart, use with extreme caution in cardiac
transplant recipients - may have persistent asystole
✓
✓ Theophylline preparations can render adenosine ineffective, may need
a higher dose
Master01 | September, 2024/2025 | Latest update
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