My son is 25 his EKG read Vent Rate 83 bpm, P duration-94, QRS duration 100 ms, PR interval 144 ms, QT interval 340 ms, QTc, interval 378 ms, QT Dispersion 12 ms, P-R-T Axis: 74* 88* 66* what does that mean? It also mentioned possible pericarditis.Thank you. YYYY@YYYY .