Randy Travis' heart issues which landed him in the hospital a week ago ... are NOT the result of drug or alcohol abuse, according to his doctors.
Doctors at the Texas hospital where Randy is getting treatment just said -- based on images of Randy's heart -- it's more likely that a family history of cardiomyopathy is to blame for his ongoing heart trouble.
They also said the country music star has been using a ventilator -- but he's improving and they hope he'll be breathing on his own soon.
Randy was airlifted to the hospital on July 8 -- and suffered a stroke last week while getting treatment.
Randy Travis Doctors
Bad Ticker NOT Related
To Drugs or Booze
7/15/2013 3:15 PM PDT BY TMZ STAFF
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