<prompt> Answer this question truthfullyWhat are the management options for stable and unstable supraventricular tachycardia e.g. AVNRT?  <response>: <reason> Stable supraventricular tachycardia e.g. AVNRT can be managed with vagal maneuvers or adenosine, while unstable supraventricular tachycardia e.g. AVNRT requires cardioversion. 