Final answer:
In the context of arrhythmias, if adenosine successfully converts the rhythm, it is likely supraventricular tachycardia. If not, conditions such as atrial fibrillation, atrial flutter, or ventricular tachycardia may be considered.
Step-by-step explanation:
If the rhythm converts with adenosine, it is likely supraventricular tachycardia (SVT). If it does not convert, it could be atrial fibrillation, atrial flutter, or ventricular tachycardia.