Technology in Diabetes Flashcards

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

Answer: Time in Range (TIR)

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.

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

Answer: Medtronic Enlite (older generation)

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

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

Answer: Suspend insulin delivery when CGM glucose drops below a set threshold

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

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

Answer: Abdomen

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

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

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

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

What is the recommended warm-up period for the Dexcom G7 sensor before it begins providing glucose readings?

Answer: 2 hours

The Dexcom G7 requires a 2-hour warm-up period after insertion before it begins providing accurate continuous glucose readings.

A type 1 patient using a closed-loop system reports frequent auto-mode exits. Which patient behavior most commonly causes this?

Answer: Failing to enter carbohydrate counts for meals

Most closed-loop systems require meal announcements (carb entries); missed bolus announcements lead to large post-meal glucose spikes that exceed auto-mode limits.