Adenosine Flashcards

1
Q

Adenosine - Type

A

endogenous purine nucleoside

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2
Q

Adenosine - Presentation

A

6mg in 2ml

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3
Q

Adenosine - Action

A

Transient inhibition of conduction in the heart, especially in AV node
Onset 5-10 sec Duration approx 10 sec

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4
Q

Adenosine - Use

A

Treatment of SVT

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5
Q

Adenosine - Adverse effects (7)

A

Common, though transient and generally minor

  1. Arrhythmias at the time of conversion
  2. Transient flushing of the skin
  3. Mild dyspnoea
  4. Chest tightness
  5. Nausea
  6. Headache
  7. Feelings of apprehension and feer
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6
Q

Adenosine - Contraindications (2)

A
  1. 2nd or 3rd deg heart block

2. Known hypersensitivity

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7
Q

Adenosine - Precautions (4)

A
  1. Asthma - may exacerbate bronchospasm
  2. Pregnancy - use only if very poorly perfused
  3. Antagonised by - theophylline (nucleon)
  4. Potentiated by - dipyridamole (persantin, asasantin)
    - carbamezepine (tegretol, teril)
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8
Q

Adenosine - Dose

A

Adult:
- 6mg IV rapid bolus into fast flowing pump set
- 12mg if first dose is unsuccessful after 2/60,
Paediatric
- 0/05mg/kg IV rapid bolus into fast flowing pump set
- 0.1mg/kg if first dose is unsuccessful after 2/60

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9
Q

Adenosine - Special notes

A
Use only after 2 x valsalva
12 lead before, during and after
elevate limb if possible
Via fast flowing pump set
Midaz 1-1.5mg if previous unpleasant (fearful) experience.
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