My kardia device gave a report of atrial flutter with rvr and a wide qsr twice. i took a propranolol and it went to tachycardia. the next day they all been normal sinus rhythm. this is 1st time it has ever happened. should i be very concerned?

Atrial flutter would have a rate of over 250-350 per minute with flutter waves. A wide QRS or RVR indicates aberrant ventricular conduction during the arrhythmia. You then converted to either sinus tachycardia or every other P wave was blocked. This then reverted to NSR. Any more episodes like that would warrant an evaluation & advice by a cardiologist. Appropriate testing will be ordered.