LEHNE'S PHARMACOLOGY ALL CHAPTERS FULLY COVERED WITH QUESTION & CORRECT ANSWER

LEHNE'S PHARMACOLOGY ALL CHAPTERS FULLY COVERED WITH QUESTION & CORRECT ANSWER A pregnant patient asks the nurse if she can take antihistamines for seasonal allergies during her pregnancy. What will the nurse tell the patient? a. Antihistamines should be avoided unless absolutely necessary b. Second-generation antihistamines are safer than first-generation antihistamines c. Antihistamines should not be taken during pregnancy but may be taken when breast-feeding d. The margin of safety for antihistamines is clearly understood for pregnant patients - CORRECT ANSWER-a. Ch. 70 Antihistamines are pregnancy Category C, with debate currently occurring regarding degree of effects on the fetus. They should be avoided unless absolutely necessary. All antihistamines have adverse effects on the fetus. Antihistamines can be excreted in breast milk. The margin of safety of antihistamines in pregnancy is not clear, so these agents should be avoided unless a clear benefit of treatment outweighs any risks. A family is preparing for travel and the parents report that their 5-year-old child has frequent motion sickness. The nurse will tell the parents to ask the provider about which antihistamine to help prevent symptoms? a. Desloratadine [Clarinex] b. Dimenhydrinate [Dramamine] c. Hydroxyzine [Vistaril] d. Promethazine [Phenergan] - CORRECT ANSWER-b. Ch. 70 Some antihistamines, including dimenhydrinate and promethazine, are labeled for use in motion sickness. Promethazine, however, is contraindicated in children under age 2 years and should be used with caution in children older than 2 years because of the risks for severe respiratory depression. Desloratadine and hydroxyzine are not used for motion sickness. A nurse is teaching a group of nursing students about antihistamines. Which statement by a student indicates an understanding of the mechanism of action of the antihistamines