Narrative:

After landing at mia, the ramp was closed due to thunderstorms in the area. We were holding on taxiway hh waiting for gate to become available. The ramp then opened, but we still had a wait of approximately 1.5 hours to get to the gate. Flight attendant in charge advised that passenger was diabetic and was getting ill. I asked the flight attendant if there was a doctor on board to check her condition. A few mins later, he told me that a nurse was aboard and checked her condition. At this point, passenger was reported to be unconscious and in diabetic shock. We declared an emergency and ground control did a superb job of clearing traffic to get us to gate where paramedics were waiting and treated the passenger.

Related reports:

Google
 

Original NASA ASRS Text

Title: A B777 CAPT RPTED THAT THUNDERSHOWERS AT MIA SO ENCUMBERED MOVEMENT ON MIA'S RAMP THAT THEY WERE DELAYED MORE THAN 1 PT 5 HRS DURING WHICH A DIABETIC PAX LAPSED INTO A COMA WHICH CAUSED THE RPTR TO DECLARE AN EMER.

Narrative: AFTER LNDG AT MIA, THE RAMP WAS CLOSED DUE TO TSTMS IN THE AREA. WE WERE HOLDING ON TXWY HH WAITING FOR GATE TO BECOME AVAILABLE. THE RAMP THEN OPENED, BUT WE STILL HAD A WAIT OF APPROX 1.5 HRS TO GET TO THE GATE. FLT ATTENDANT IN CHARGE ADVISED THAT PAX WAS DIABETIC AND WAS GETTING ILL. I ASKED THE FLT ATTENDANT IF THERE WAS A DOCTOR ON BOARD TO CHK HER CONDITION. A FEW MINS LATER, HE TOLD ME THAT A NURSE WAS ABOARD AND CHKED HER CONDITION. AT THIS POINT, PAX WAS RPTED TO BE UNCONSCIOUS AND IN DIABETIC SHOCK. WE DECLARED AN EMER AND GND CTL DID A SUPERB JOB OF CLRING TFC TO GET US TO GATE WHERE PARAMEDICS WERE WAITING AND TREATED THE PAX.

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.