A patient with type 2 diabetes mellitus takes glipizide. The patient develops a urinary tract infection, and the prescriber orders TMP/SMZ. What will the nurse tell the patient?
a. Patients with diabetes have an increased risk of an allergic reaction.
b. Patients taking TMP/SMZ may need in-creased doses of glipizide.
c. The patient should check the blood glu-cose level more often while taking TMP/SMZ.
d. The patient should stop taking the glipi-zide while taking the TMP/SMZ.
C
Sulfonamides can intensify the effects of some drugs, including glipizide, which is a sulfonylu-rea-type hypoglycemic medication. These drugs may require a reduction in dose to prevent tox-icity. Patients should monitor their blood glucose more closely. There is no increase in allergic reactions to TMP/SMZ in patients who are diabetic. Patients taking TMP/SMZ may need re-duced doses of glipizide but should not stop taking the drug.
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The sum of 
written in the proper form and reduced to lowest terms is ________.
A. 
B. 
C. 
D. 