CDE Technology in Diabetes 3

Question 1

Which metric from CGM data represents the percentage of time glucose levels are between 70–180 mg/dL?

Accepted Answer

Time in Range (TIR)

Answer

Time in Range (TIR) is the percentage of CGM readings within the target glucose range of 70–180 mg/dL and is a key outcome metric.

Question 2

A patient using a CGM asks whether they can use acetaminophen while wearing their sensor. Which CGM system is MOST affected by acetaminophen interference?

Accepted Answer

Medtronic Enlite (older generation)

Answer

Older Medtronic sensors using electrochemical detection were significantly affected by acetaminophen, which could falsely elevate readings.

Question 3

What is the primary purpose of a 'suspend on low' feature on a sensor-augmented insulin pump?

Accepted Answer

Suspend insulin delivery when CGM glucose drops below a set threshold

Answer

The 'suspend on low' feature automatically pauses insulin delivery when CGM glucose falls below a programmed threshold to prevent or reduce hypoglycemia.

Question 4

A CDE is helping a patient select a CGM insertion site. Which site is FDA-approved for ALL major CGM brands?

Accepted Answer

Abdomen

Answer

The abdomen (specifically the periumbilical area) is the traditional FDA-approved insertion site across all major CGM systems.

Question 5

When a patient's CGM shows a rapidly falling glucose arrow (>3 mg/dL/min), what action is most appropriate?

Accepted Answer

Treat for hypoglycemia even if glucose is currently above 80 mg/dL

Answer

A rapid downward trend arrow indicates the glucose is falling quickly; treating preemptively when above 80 mg/dL can prevent hypoglycemia.

Certified Diabetes Educator Test Practice Test

Certified Diabetes Educator Test Practice Test

CDE Technology in Diabetes 3