This is probably a doctor question, but it is Good Friday, so decised it can sit til monday. Just curious, Im just on PIP for my PAF. ( after much disagreement between cardiologist and EP, EP won the PIP debate). As my blood pressure is creeping up a little, they both agreed to put me on low dose metoprolol 12.5 mg twice daily. Ive taken it for a week and my reating heart rate pre metoprolol was 60's, now it is upper 40's. I feel ok, no dizziness, etc. Should I be worried about heart rate at 48?