EKG accuracy with a Interatrial septal aneurysm?

Results of test done are:  (Just curous about the 2008 test)

EKG  2001:  Female 5.5   34 yrs old    143 LBS.
Ectopic atrial rhythm, ? faulty V6 - omitted from analysis, changes V3-V4 are probably due to left ventricular hypertrophy but consider anterior infarction,   ST-T changes in inferior leads,  these minor changes are of equivocal significance only.  Summery: abnormal  *unconfirmed analysis

       EKG  2006:  Female 5.5   38 yrs old    164 LBS.
       Sinus rhythm, Possible left atrial abnormality, incomplete right bundle branch block, ST-T changes in inferior        leads, borderline abnormal for age and sex, interpret together with clinical data.  Summery: abnormal       *unconfirmed analysis


EKG  2008A:  Female 5.5   40 yrs old    157 LBS.
Sinus arrhythmia, probable normal variant, ST-T changes in inferior leads, borderline abnormal for age and sex, interpret together with clinical data.  Summery: abnormal  *unconfirmed analysis

EKG  2008B:
Ectopic atrial rhythm, sino-atrial 2nd degree mobitz ll block, possible old anterior infarction, ST-T changes in inferior leads, changes are abnormal for age and sex, interpret together with clinical data.  Summery: abnormal  *unconfirmed analysis

2001         2006          2008A          2008B            2008        A and B done within 1 min. of ea. sheet.
vent rate   84                79               69             68                      All were done at the same place.
Durations
P:           104             108               96             108              hs CRP in 2006 once 7 two months later 20
QRS:        80              80                78              90                           in 2008 6.2
Intervals
PR:         130             174             164             130                BP in 2001    124/84       all resting
QT:         414              394             412             400               BP in 2006     165/101     before meds
QTc:        456             427             428             414               BP in 2006     120/88     started meds
Axes                                                                                  
P:            -108            54               33              -95                 Diazide/Maxide 50/25mg. once daily
QRS:         51             44               47               70                 Lopressor 50mg. 1/2 twice daily
T:              20             32               26               17                  Asprin 81mg. once daily  
                                                                                        & Lipitor 10mg. once daily (started 3 mo. ago.)
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Any answers are welcome.   Just wondering if an interatrial septal aneurysm could throw off an EKG or if these issues should be further checked out.   Thank you,  Amy.