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9 Cards in this Set
- Front
- Back
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adenosine trade name
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adenocard
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Adenosine Classification
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-Endogenous nucleoside
-antiarrhythmic |
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Adenosine Mechanism of Action
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-Found in all cells of body
-rapidly metabolized in the blood vessels -Slows sinus rate -Slows conduction time through AV Node -can interupt reentry pathways through AV Node -Can restore sinus rhythm in re-entry narrow complex SVT, including SVT with WPW |
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Adenosine Indications
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-Stable, narrow complex AV nodal or sinus nodal reentry tachycardias
-for unstable reentry SVT while prepping for cardioverison -undefined stable narrow complex svt as a combo therapeutic and diagnostic maneuver -stable, wide complex tach in pt's with recurrence of a known reentry pathway that has been defined |
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Adenosine Dose
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-6mg rapid IV push over 1-3 seconds
-if no response within 1 to 2 minutes, give 12mg -may repeat 12mg dose once in 1-2 minutes |
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Adenosine Precautions
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-side effects common but transient and usually resolve within 1-2 minutes
-Cardiovascular: facial flushing, chest pain, headache, sweating, palpitations, hypotension -respiratory: SOB, dyspnea, chest pressure, hyperventilation -CNS: Lightheadness, dizziness, tingling in arms, numbness, apprehension, blurred vision, burning sensation, heaviness in arms, neck and back pain -GI: Nausea, metallic taste, tightness in throat, pressure in groin -caution in obstructive lung disease not associated with brochoconstriction (emph, bronchitis) |
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Adenosine Contraindications
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-Poison/drug induced tachycardia
-Brochoconstricion or bronchospasm -second or third degree Heart block -Sick sinus syndrome (except in patients with a functioning artifical pacer) |
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Adenosine Special
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-IV site A/C perfered
-Follow each dose with 20ml N/S flush -Use injection closest to Hub -Cases of prolonged asystole, VT, and VF, transient increase in BP, bradycardia, A-Fib and bronchospasm have been reported with adenosine -D/c in any patient that develops severe respiratory hx -Because works by decreasing conduction thru AV node admin may result in 1st, 2nd, 3rd degree block -1/2 life is short these effects are self limiting |
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Adenosine Half life
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10 seconds
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