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Several things can cause a high BG reading. The most common problems and causes of high
blood glucose are listed in the following table, as are some suggested solutions.
Possible Cause of High BG Suggested Solution
INFUSION SET
Redness, irritation, inflammation,
swelling, discharge or discomfort
Change infusion set tubing and site. Contact healthcare team.
Bump or nodule at infusion site Change infusion set and rotate sites.
Avoid this area for site selection.
Scar tissue Avoid this area for site selection.
Catheter inserted in area of
friction
Avoid waistline and friction areas.
Kink in tubing/catheter Change infusion set tubing and site.
INFUSION SET
Infusion set not primed (air in
tubing)
Disconnect tubing from body. Prime tubing completely.
INSULIN
Cloudy, clumpy, expired or
insulin exposed to extreme
temperatures
Remove infusion set and cartridge and discard.
Use new insulin vial.
Using Regular insulin
Consult healthcare team. May need to use alternate insulin as
prescribed by your physician.
FOOD INTAKE
Bolus insufficient or omitted Review carbohydrate counting and I:C ratio settings.
High protein or fat intake Consult dietitian; may need to count protein and fat.
Long meal (holiday), continuous
snacking, slowly absorbed food
(high fiber), delayed digestion
(gastroparesis)
Consult healthcare team. May need to use extended bolus or
combination bolus option.
Improper bolus timing Consult healthcare team.
ACTIVITY
Less activity Use Temp Basal increase. Consult healthcare team.
Overuse of Temp Basal reduction Record amount of time for changes.
Frequent BG testing to document changes.
BG > 250 with ketones before
exercise
BG will increase with exercise when ketones are present.
Do not exercise when ketones are present.
Consult healthcare team for exercise guidelines.
Infusion set should be changed every 2 to 3 days or as recommended by your
healthcare team.
Always use clean technique!
Notify healthcare team with signs or symptoms of infection!
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