Suggest Treatment For Vertigo & Chronic Sinus Infection

My 20 year old son was seen by a PCP today with c/o dizziness, vertigo & suspected chronic sinus infection. He had an EKG today & was told that he had an rsr variation & referred to a cardiologist. Of note, my son also has a history of boderline high BP, today it was 80/138. (not white coat syndrome as it is elevated when I take it at home) I first noticed his BP seemed rather high when he was about 8 years old. About the same time I also noticed a 'skip' in his heartbeat; about every 3rd beat, but not all the time. This had gone unnoticed until then. (I was in nursing school at the time of this discovering)
He is 5' 11" & weigths 153 lbs. (Side note: I learned today that 2 1/2 months ago he weighted 176; 23 lb wt. lose. He seemed unaware that he had lost so much wt & attributes the wt lose to DCing soda & starting to exercise) Also, about 1 1/2 years ago he was seen by a different PCP for vertigo/dizziness. At that time he was DX with an inner ear infection & was given Meclozine (sp). The docotor's DX was based on my son's eye movement; my son's eyes 'fluttered' when he was asked to follow the doctor's finger with his eyes. As of recent the Meclazine (sp) does not help with his vertigo/dizziness. What dose rsr variation mean? Does this warrant a visit to the cardiologist? Thank you