My son had an EKG (age 20) that shows Sinus Bradycardia/Borderline ECG. The Dr. told my son it was fine. Bad hearts run in my family. I had a heart attack at age 47. The P-R-T axes is 42/90/64. Can anyone explain that for me? Heart rate is 58. PR interval is 170ms. QRS duration is 102 ms. QT/QTc is 409/406.