- indicated for PSVT;
- if arrhythmias are not due to reentry involving the AV node or sinus node (eg, atrial flutter, atrial fibrillation, atrial or ventricular tachycardias), adenosine will not terminate the arrhythmia but may produce transient AV or ventriculoatrial block that may clarify dx;
- Dose:
- half-life of adenosine is less than 5 seconds;
- recommended initial dose is a 6-mg rapid bolus over 1 to 3 seconds
- dose should be followed by a 20-mL saline flush;
- if no response is observed within 1 to 2 minutes, a 12-mg repeat dose should be administered in the same manner