The nurse instructs a patient with type 1 diabetes mellitus to avoid which of the following drugs while taking insulin?
a. Furosemide (Lasix)
b. Dicumarol (Bishydroxycoumarin)
c. Reserpine (Serpasil)
d. Cimetidine (Tagamet)
ANS: A
Furosemide is a loop diuretic and can increase serum glucose levels; its use is contraindicated with insulin. Dicumarol, an anticoagulant; reserpine, an anti-hypertensive; and cimetidine, an H2 receptor antagonist, do not affect blood glucose levels.
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