i am scheduled for hysterectomy next tues. have had several ecg in my lifetime and never any issues. my pre-op ecg came out with st abnormality (possible digitalis effect). my vent rate-74bpm, pr 166, qrs 72, qt/qtc 378/419, prt 61 7 29. normal sinus rhythm, i a 55 yr old female with no problem exercising. what stall does this me for surgery.