Description of Event or Problem · 0
DEXCOM G7. THIS WILL BE THE 4TH UNIT I HAVE HAD TO REPORT TO DEXCOM. THE LAST 3 WERE FROM THE SAME LOT NUMBER AND THE ISSUE WAS DEXCOM SHOWING RADICAL LOW GLUCOSE LEVELS EVEN AFTER 48 HOURS OF WEAR (SPAN OF DIFFERENCE ~80 PTS). THE NEWEST FAILED G7 WAS AFTER 24 HOURS OF HAVING TO RECALIBRATE MULTIPLE TIMES AND AVERAGE DISCREPANCY OF >140. THIS PUT ME AT HIGH RISK IF DKA DURING SLEEP SINCE MY CLOSED LOOP SYSTEM PUMP DID NOT INCREASE MY INSULIN WHEN NEEDED THINKING I WAS TOO "LOW" IT SUSPENDED MY INSULIN WHILE I SLEPT. ON (B)(6) 2025 AT 10:05 AM PDT NEW G7 STATED BG WAS 57 WHILE BLOOD GLUCOMETER READING WAS 180. (RECALIBRATED G7) (B)(6) 2025 AT 2:00 PM PDT G7 STATED BLOOD GLUCOSE OF 84, GLUCOMETER 184 (RECALIBRATED AGAIN) (B)(6) 2025 AT 3:30 PM G7 = 66, GLUCOMETER 148 (RECALIBRATED) (B)(6) 2025 10:00 PM PDT G7 = 132, GLUCOMETER = 141, I THOUGHT G7 WAS FINALLY CALIBRATING PROPERLY AND WENT TO BED. (B)(6) 2025 AT 6AM PDT G7 STATED BG WAS 68 WHILE 3 SEPARATE GLUCOMETER READINGS WERE 259, 242 AND 233 RESPECTIVELY. (RECALIBRATED G7) (B)(6) 2025 G7 9:00 AM PDT STATED BG WAS 77 GLUCOMETERS READING 229. RISK OF DKA (DIABETIC KETOACIDOSIS). LARGE KETONES POSITIVE. (B)(6) 2025 CONTINUED FALSE G7 READINGS (7) WITH AVERAGE DISCREPANCY >120 POINTS. I PULLED THE G7, FOUND AN OLD G6 TRANSMITTER AND SENSOR AND PLACED IT. READINGS SPOT ON FROM START. I CALLED DEXCOM AND THEY ARE ONCE AGAIN SENDING ME A REPLACEMENT G7. I TOLD THEM THE LAST 3 WERE FROM SAME LOT NUMBER AND NOW THIS ONE IS FROM A NEW LOT NUMBER. I ASKED FOR A SUMMARY REPORT OF FINDINGS FROM ALL MY SUBMISSIONS OF MALFUNCTIONS G7S AND WAS TOLD I CANNOT SEE ANY REPORTS OF FINDINGS. (B)(6).