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Adenosine
Question | Answer |
---|---|
Type: | Endogenous purine nucleoside |
Presentation: | 6mg in 2ml |
Use: | Rx of SVT Not for AF or AFl, however decrease in AV node conduction may unmask atrial activity |
Action: | Causes transient inhibition of conduction in the heart, esp AV node |
Contraindictaions: | - 2 or 3 degree HB - KSAR |
Precautions: | - Asthma - Pregnancy: use only if very poorly perfused - Antagonised by theophyline Potentiated by persantin, carbium, tegretol |
Dose: | Symptomatic adults: 6mg rapid bolus, 2nd 12mg Paed: 0.05mg/kg then 0.1mg/kg |
Special note: | 12 lead, valsalva x 2, Tx due to recurrence - midaz if previous fear, 1-1.5mg |