PTCB Exam One with Questions and Answers

PTCB Exam One with Questions and Answers Which of the following antibiotics could cause the discoloration of teeth in young children? A.Cephalexin B.Amoxicillin C.Doxycycline D.Erythromycin ANSWER C. doxycycline is a tetracycline antibiotic, and all tetracyclines run the risk of tooth discoloration and enamel hypoplasia when given to young children. Distractor (A) is a sulfa antibiotic, distractor (B) is a penicillin antibiotic, and distractor (D) is a macrolide antibiotic, none of which are known to cause discoloration of teeth in young children. Which of the following medications are considered a therapeutic substitution? A.Tenormin and atenolol B.Prilosec and paroxetine C.Zocor and pravastatin D.Loxitane and fluoxetine ANSWER C. because Zocor (simvastatin) and Pravachol (pravastatin) are both HMG-CoA reductase inhibitors. Distractor (A) is an example of generic substitution, distractor (B) contains drugs for two different indications, and distractor (D) is an example of look-alike/sound-alike drug names. Look-alike/sound-alike precautions should be applied to medications with similar: A.manufacturer labels. B.expiration dates. C.therapeutic indications.