need help with my ecg reports?

I had 2 EKG's done recently and they both say borderline abnormal.the first one reads.....vent rate 93..intervals  rr 645ms and pr 102 ms...qrs 84ms...qt  364 ms....qtc  421 ms...qt disperson 34 ms and p-r-t axis 55  63  41. And it also reads short pr interval.
My next one which was 4 months later saysvent rate 100
rr interval 598 ms
pr interval 94 ms
qrs duration 88 ms
qt interval 342 ms
qtc interval 412 ms
qt dispersion 62 ms
p-r-t axis 51  62  -29
on the side it reads sinus tachycardia, short pr interval, and extensive st-t changes are borderline abnormal
PLEASE HELP ME...WHAT DOES THIS MEAN?

[allaflutter1213]

not sure about all the rest but sinus tachycardia is simply when your heart rate goes up a bit when you breathe in and slows back down when you exhale and I have been told is nothing to be concerned about. I get that too.

[bayleaf]

EKG interpretation machines know textbook normals, and that's it.  If your heart rate is supposed to be under 100, than at 101 you're "abnormal".  Your heart rate is slightly on the fast side.  Maybe you're a little overweight, a little out of shape, or maybe your heart just tends to run a little fast.  Your PR interval is a little short, but nowhere near anything I would care about unless it's accompanied by some other weird changes in your EKG.  Everything else there is fine.  The only concerning thing you said was ST-T changes.  I can't help anymore without seeing what those changes are.  But as far as the numbers go, they're fine.