Blood Glucose Monitoring Flashcards
7 cards from real BC ADM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Blood Glucose Monitoring flashcards as text
During exercise, a patient's CGM shows glucose dropping from 140 to 95 mg/dL over 30 minutes with a downward arrow. Per ADA exercise guidelines, what should the patient do?
Answer: Consume 15–30g fast-acting carbohydrates and continue or pause exercise
ADA exercise guidelines recommend consuming 15–30g of fast-acting carbohydrates when glucose falls rapidly during exercise to prevent hypoglycemia.
Which statement about continuous glucose monitor (CGM) sensor accuracy during the warm-up period is correct?
Answer: Most CGM sensors require a 1–2 hour warm-up before providing reliable readings
Most CGM sensors require a 1–2 hour initialization/warm-up period after insertion before glucose readings are sufficiently accurate for clinical use.
A hospitalized patient on insulin drip has fingerstick BG of 52 mg/dL but appears clinically well without symptoms. What is the most appropriate next step?
Answer: Repeat the fingerstick immediately and treat if confirmed
In the hospital, a low fingerstick result without symptoms warrants immediate repeat testing to confirm hypoglycemia before treatment, as capillary samples can yield erroneous results.
Which CGM alarm threshold setting is most appropriate to help a patient with hypoglycemia unawareness?
Answer: Low alarm at 80 mg/dL with a predictive low alert at 20 minutes
Setting a low alarm at 80 mg/dL with a predictive alert provides early warning for patients with impaired hypoglycemia awareness, allowing intervention before glucose falls to dangerous levels.
A patient's CGM Mean Absolute Relative Difference (MARD) is reported as 12%. What does this indicate?
Answer: On average, CGM readings differ from reference blood glucose by 12%
MARD is the standard CGM accuracy metric; a 12% MARD means CGM values deviate from reference glucose by an average of 12%, which is within acceptable clinical accuracy range.
When counseling a patient about blood glucose testing technique, which error most significantly affects SMBG accuracy?
Answer: Using alcohol to clean the site and testing before it dries
Residual alcohol on the fingertip dilutes the blood sample and can cause falsely low readings; the site must be completely dry before lancing.
Which of the following best defines 'time below range' (TBR) Level 2 in the CGM consensus targets?
Answer: Glucose <54 mg/dL
TBR Level 2 is defined as glucose <54 mg/dL, representing clinically significant hypoglycemia; the target is <1% of readings in this range.