Medtronic CGM
(Key:
[x]
available in data protocol/documented in spec and implemented[-]
available in data protocol/documented in spec but not yet implemented[?]
unknown whether available in data protocol/documented in spec; not yet implemented*[ ]
TODO: needs implementation![ ]
unavailable in data protocol and/or not documented in spec and not yet implemented)
Required if Present
CBG
[x]
cbg values[ ]
units of cbg values (read from device, not hard-coded)[-]
out-of-range values (LO or HI)[-]
out-of-range value thresholds (e.g., often 40 for low and 400 for high on CGMs)
Device-specific? (Add any device-specific notes/additions here.)
- Medtronic also provides the raw (interstitial) signal, which we store in the payload
Device Events
[x]
calibrations[x]
calibration value[ ]
units of calibration value (read from device, not hard-coded)
[x]
time changes (presence of which is also in the BtUTC section below)[x]
device display timefrom
(before change) andto
(result of change)[ ]
agent of change (automatic
ormanual
)[ ]
timezone[ ]
reason for change (read from device)
Device-specific? (Add any device-specific notes/additions here.)
Time change events for the CGM have cgm
in the payload, while pump time changes have pump
in the payload.
Settings
*[?]
units preference for BG display*[?]
units of data being uploaded (will be mutated to mmol/L storage units if not mmol/L)*[?]
transmitter ID*[?]
low alert settings*[?]
enabled*[?]
level/threshold*[?]
snooze threshold
*[?]
high alert settings*[?]
enabled*[?]
level/threshold*[?]
snooze threshold
*[?]
rate-of-change alerts*[?]
fall rate alert*[?]
enabled*[?]
rate threshold for alerting
*[?]
rise rate alert*[?]
enabled*[?]
rate threshold for alerting
*[?]
out-of-range alerts*[?]
enabled*[?]
snooze time between alerts
*[?]
predictive alerts*[?]
low prediction*[?]
enabled*[?]
time sensitivity (minutes to predicted low for alerting)
*[?]
high prediction*[?]
enabled*[?]
time sensitivity (minutes to predicted high for alerting)
*[?]
calibration alerts/reminders*[?]
pre-reminder*[?]
overdue alert
Settings history:
[?]
device stores all changes to settings OR[?]
device only returns current settings at time of upload
No Tidepool data model (yet): volume and/or vibrate mode of all alerts (can/should go in payload
).
Device-specific? (Add any device-specific notes/additions here.)
"Bootstrapping" to UTC
[x]
index[ ]
UTC timestamp (Hey, one can dream!) OR[ ]
internal timestamp or persistent log index (across device communication sessions) to order all pump events (regardless of type), independent of device display time OR[x]
ephemeral log index (does not persist across device communication sessions) to order all pump events (regardless of type), independent of device display time
[x]
date & time settings changes
Device-specific? (Add any device-specific notes/additions here.)
The CGM sensor has its own ephemeral log index and time change events, so is bootstrapped separately from the pump.
No Tidepool Data Model Yet
NB: You can and should add to this section if there are other data types documented in the device's data protocol specification but not part of Tidepool's data model (yet).
[-]
alarms, e.g. low glucose[ ]
activity/exercise[ ]
food (e.g., Dexcom allows logging carb events)[ ]
notes/other events