ECG showed poss. inferior infarct; 1st degree AV block

I am a 35 yr. old male, 244 lbs, 6' tall, and work out in the gym with weights and do aerobic 3 times a week.  I was an athlete (wrestler and football player) for many years and since age 20 have been active duty in the military.  I recently went in to the military base's primary care doc for my ADD.  I have never taken meds for it and up until now have been able to drink caffeine/energy drinks to help maintain my attention span, but recently with many family stressors, I am having trouble focusing.  They told me I needed to have an ECG done before prescribing ADD drugs.  

I had no caffeine that morning.  The tech only wired my chest, not my arms/legs.  She only took a reading for less than a minute and I was done.  The test results came back showing Sinus Brachycardia with 1st degree AV block and possible Inferior Infarction, age undetermined; therefore an abnormal ECG. The stats were Vent rate 58 bpm; PR interval 210 ms; QRS duration 102 ms; QT/QTc 386/378 ms; and P-R-T axes 45  64  72.

The doc said not to worry.  Apparently when I had an ECG done in 2001 (age 28) for Officer Training School, the signs were there too (stats Vent rate 57 bpm; PR interval 206 ms; QRS duration 96 ms; QT/QTc 400/389 ms; and P-R-T axes 25  37  37; sinus brachycardia with sinus arrhythmia; otherwise normal ECG).  Since I showed these signs seven years ago, and I do not have any chest pains/shortness of breath/fatigue/etc, the doc said nothing needs to be pursued to check it out.

I don't understand why an Inferior Infarction could show up if I have never had/been aware of a heart attack.  There is heart disease and heart attacks on my father's side, however.  Could having a 1st degree AV block be a cause or warning sign of something coming down the pike, or something entirely different?  Is there something that could "look" like a heart attack on an ECG?  I asked the doc for more tests and she said it would be a waste of resources.  I am an only father of two small boys whose wife passed away from cancer two years ago.  I want to cover my bases.

I appreciate any info/guidance and knowledge that anyone has to help me process this and determine if I need to push for more tests.

Dan

[silvrwood]

I wonder the same thing, and I wonder if doctors know how to identify an emerging condition.  It seems like they consider everything benign and nothing to worry about, until all the sudden you have a condition that requires intervention.  It's not like conditions suddenly appear, so how do they recognize an emerging one, and what are the indications?  Are symptoms of 1st degree AVB, PVCs, atrial runs, IVCD, sinus arrhythmia and atrial couplets the first steps toward an electrical conduction condition, heart disease or serious arrythmia?  Why do doctors tell you they don't make you feel bad when they do?