Adenosine

Question 1

Pharmacology & Actions

Answer 1

• slows conduction through the AV node
• most cases of PSVT involve AV node reentry. Adenosine interrupts AV nodal circuit and stops tachycardia - restoring normal sinus rhythm

Question 2

Indications

Answer 2

To convert hemodynamically stable narrow complex tachycardia with pulse

Question 3

Absolute Contraindications

Answer 3

• 2nd or 3rd degree Heart blocks
• poison or drug induced tachycardia
• known hypersensitivity
• allergy

Question 4

Precautions and Side Effects

Answer 4

• can cause brief asystole, dizziness, facial flushing, headache, nausea and transient shortness of breath
• IV/IO can produce broncospasm in asthmatics
• if patient becomes hemodynamically unstable, cardioversion should occur

Question 5

Administration

Answer 5

• IV/IO
• Onset 20-30sec
• Peak 20-30sec
• Duration 30sec
• Dose 6mg 1st dose 12mg 2nd