question: I had a palpitation yesterday and then felt very very dizzy.  It lasted all of 5 sec.  I went to urgent care.  They took my BP (167/94) and my heart rate was 101.  I am on Lisinopril/HCTZ (20 mg/12.5).  My BP last month was 128/78 and my heart rate is usually in the 70's.  The doctor said the EKG looked ok but my heart was beating a little fast.  He said I should follow up with a cardiologist, which I am going to do.  He said it was difficult to determine what happened.  I don't smoke, I am overweight, I drink very little caffeine.  Any ideas?