Narrative:

Approximately 30 mins into the flight, the purser informed me a man, who was traveling with his wife, had passed out. It was determined that he had a history of heart trouble and high blood pressure. I decided the best course of action was to return to sju. We declared a medical emergency and added lifeguard to our call sign. The flight attendants began providing oxygen. The passenger awoke and started vomiting. Paramedics met the flight and removed the passenger whose condition had improved to some degree. The cabin crew did an outstanding job.

Google
 

Original NASA ASRS Text

Title: B757 FLT DIVERTS TO SJU DUE TO PAX ILLNESS.

Narrative: APPROX 30 MINS INTO THE FLT, THE PURSER INFORMED ME A MAN, WHO WAS TRAVELING WITH HIS WIFE, HAD PASSED OUT. IT WAS DETERMINED THAT HE HAD A HISTORY OF HEART TROUBLE AND HIGH BLOOD PRESSURE. I DECIDED THE BEST COURSE OF ACTION WAS TO RETURN TO SJU. WE DECLARED A MEDICAL EMER AND ADDED LIFEGUARD TO OUR CALL SIGN. THE FLT ATTENDANTS BEGAN PROVIDING OXYGEN. THE PAX AWOKE AND STARTED VOMITING. PARAMEDICS MET THE FLT AND REMOVED THE PAX WHOSE CONDITION HAD IMPROVED TO SOME DEGREE. THE CABIN CREW DID AN OUTSTANDING JOB.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.