CDE Technology in Diabetes 2

Question 1

A patient using a CGM notices persistent signal loss alerts. Which troubleshooting step should the educator recommend first?

Accepted Answer

Check that the receiver or smartphone is within 20 feet of the sensor

Answer

CGM signal loss is most commonly caused by the receiver or paired device being out of Bluetooth range, typically beyond 20 feet.

Question 2

Which feature of a hybrid closed-loop insulin delivery system distinguishes it from a standard insulin pump?

Accepted Answer

It automatically adjusts basal rates based on CGM data

Answer

Hybrid closed-loop systems automatically adjust basal insulin delivery in response to real-time CGM glucose values, though users still manually bolus for meals.

Question 3

A patient reports that their CGM readings are consistently 20–30 mg/dL lower than fingerstick values. What is the most likely explanation?

Accepted Answer

The sensor is measuring interstitial fluid, not blood glucose

Answer

CGMs measure glucose in interstitial fluid, which lags behind blood glucose and can read lower especially during rapid glucose changes.

Question 4

When educating a patient on insulin pump infusion set changes, how often should sets typically be changed to prevent site infections and lipohypertrophy?

Accepted Answer

Every 2–3 days

Answer

Infusion sets should be changed every 2–3 days to reduce infection risk and prevent insulin absorption problems from lipohypertrophy.

Question 5

Which CGM system uses a factory-calibrated sensor that does NOT require routine fingerstick calibrations in most users?

Accepted Answer

Abbott FreeStyle Libre 3

Answer

The Abbott FreeStyle Libre systems are factory-calibrated and do not require routine fingerstick calibrations for standard use.

Certified Diabetes Educator Test Practice Test

Certified Diabetes Educator Test Practice Test

CDE Technology in Diabetes 2