Leik - FNP Review questions with correct answers

Which of the following drugs interact with warfarin/coumadin? a. Imodium (loperamide) b. Diltiazem Hydrochloride SR (diltiazem) c. trimethoporim-sulfamethoxazole (Bactrim) d. sumatriptan (Imitrex) CORRECT ANSWER c Sulfa drugs will interact with warfarin (increases the blood level), which results in an elevation of the INR and the risk of bleeding. The following drugs are potent inhibitors of the CYP450 system except: a. Erythromycin (Erythrocin) b. Cimetidine (Tagamet) c. Ceftazidime (Tazicef) d. Diltiazem (Cardizem) CORRECT ANSWER a Erythromycin acts as inhibitors slow down drug clearance, increasing drug concentration. This may lead to drug overdose. A 57 year old patient comes to the clinic for her routine physical. She has no new complaints. The only medication that she takes is digoxin (Lanoxin) for her atrial fibrillation. Which of the following electrolyte levels should be monitored in this patient? a. potassium, calcium, chloride b. magnesium, calcium, chloride c. potassium, calcium, magnesium