CDE Monitoring Techniques 2

Question 1

Which factor most commonly causes falsely LOW blood glucose readings on a home glucometer?

Accepted Answer

Hematocrit below 25% (anemia)

Answer

Low hematocrit (anemia) causes falsely low glucometer readings because less glucose-containing plasma is sampled relative to the total blood volume.

Question 2

A patient's CGM sensor glucose reads 180 mg/dL but a fingerstick capillary glucose reads 145 mg/dL. Which value should guide an insulin dosing decision?

Accepted Answer

The fingerstick value, as capillary blood is the reference standard

Answer

When CGM and fingerstick values disagree, the capillary fingerstick is the reference standard and should guide treatment decisions.

Question 3

What is the primary clinical advantage of flash glucose monitoring (FreeStyle Libre) compared to traditional SMBG?

Accepted Answer

It provides trend arrows and eliminates the need for routine fingersticks

Answer

Flash glucose monitoring provides trend arrows and glucose history with a scan, reducing the need for routine fingersticks while showing glucose direction.

Question 4

A patient checks fasting glucose every morning but never checks postprandial levels. What important information is she missing about her glycemic control?

Accepted Answer

Postprandial glucose excursions that significantly contribute to HbA1c

Answer

Postprandial glucose spikes contribute significantly to overall HbA1c and are missed if only fasting readings are obtained.

Question 5

Which urine ketone result warrants immediate medical evaluation in a person with type 1 diabetes?

Accepted Answer

Moderate to large ketones regardless of blood glucose

Answer

Moderate to large urine ketones indicate significant ketone production and risk for diabetic ketoacidosis requiring prompt medical assessment.

Certified Diabetes Educator Test Practice Test

Certified Diabetes Educator Test Practice Test

CDE Monitoring Techniques 2