Oakland Raiders owner Al Davis died from a broken heart ... this according to his death certificate obtained by TMZ.
The document reveals three primary causes of death:
A) Ventricular fibrillation -- a dangerously abnormal heart rhythm
B) Congestive heart failure
C) Cardiomyopathy -- heart muscle disease
According to the death certificate, Al died at the Oakland Airport Hilton at 2:45 AM on October 8th.
The document shows Al had been diagnosed with cardiomyopathy years ago ... and suffered a ventricular fibrillation just 15 minutes before his death. Davis also suffered from Merkel cell carcinoma -- an aggressive form of skin cancer.
According to the doc, Davis -- who was involved with the NFL for 60 years -- underwent throat surgery just three days before his death. Davis also had heart surgery in 1996.
Al was 82 when he died.
Raiders Icon Al Davis
Died from Bum Ticker
10/28/2011 12:00 PM PDT BY TMZ STAFF
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