Paroxysmal atrial tachycardia (if that's what you mean with PAT) is a rapid rhythm that origin from the upper heart chambers (like the normal rhythm) but from another spot than your sinus node. Another (less specific) expression is supraventricular tachycardia (SVT)
Usually it's not caused by any heart disease, but in your case, with sleep apnea and elevated blood pressure, it can be caused by changes in the left atrium. It may also be causing atrial fibrillation later, so if there is a cause (like high blood pressure, overweight, sleep apnea, pulmonary diseases, etc), you must get it treated by your doctor.
Is your blood pressure normal when you don't have the tachycardia?
As far as I know, treatment is: 1) To treat the underlying condition, if it exists, and 2) if this will not stop the tachycardia from happening, the spot causing the tachycardia may be ablated.
Sorry I can offer much help at this point, but I do ask that you spell out what you mean by "PAT...disorder". It is possible my memory is just failing me, but at the moment at least I have no idea what those letter stand for (would guess Atrial Tachycardia for the AT part... still not helpful for me).
Again, not anything I can directly relate to but it seems to me reasonable that discuss "start gerding up what food I ate at eveing meal or at nite." with at least you primary care doctor.. are you being treated for "gerd"?