Trying To Interpret My ECG Report--it Says --# PACs=1 Low

trying to interpret my ECG report--it says --# PACs=1
Low voltage in precordial leads.-poor R-wave progression-may be secondary to pulmonary disease consider old anterior infarct.
Does this mean I had a heart attack at another time--age 71 woman--should I be worried over this diagnosis--N P WAS IN A HURRY WHEN SHE GAVE ME RESULTS,DID NOT EXPLAIN TEST TO ME.I asked for copyof test results to read for myself.