Accuracy of computerized EKG findings

  I have had MVP for many years and go to my cardiologist annually for follow up.  This visit, I noticed that they had a new EKG machine, one which was computerized and provided a diagnosis on the printout.  The computer read my EKG with left ventricular hypertrophy - something I have never been told I had.  My cardiologist brushed it off, saying that he noted no change from previous EKGs.  Are these computers accurate?  If they are not, why have them?  Thanks for taking the time to answer.
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Dear Beth
The computers are useful in that they use sophisticated algorithms to point out possible abnormalities to the doctor. They are not as good as a cardiologist