Nurse Practitioner Certification Examination And Practice Preparation #1

Little systemic absorption of mast cell stabilizers occurs with inhaled or intranasal use. {Ans: True}Which of the following statements about potential drug interactions with phenytoin is false? {Ans: When phenytoin and theophylline are given together, the result is a higher concentration of both drugs than when given separately. True: -Phenytoin increases theophylline clearance by increasing cytochrome P-450 (CYP 450) enzyme activity. -When taken with other highly protein-bound drugs, the free phenytoin concentration can increase to toxic levels. -Phenytoin can increase the metabolic capacity of hepatic enzymes, thus leading to reduced drug levels.}Antiplatelet agents commonly used in secondary prevention of stroke include all of the following except: {Ans: rivaroxaban. all: aspirin. clopidogrel. aspirin plus extended-release dipyridamole.}A first-line prophylactic treatment option for the prevention of tension-type headache is: {Ans: nortriptyline.}In an immunocompetent adult, the length of incubation for the influenza virus is on average: {Ans: 1 to 4 days.}Treatment options in cluster headache include the use of: {Ans: ALL of the following: -nonsteroidal anti-inflammatory drugs (NSAIDs). -oxygen. -the triptans.}Finasteride (Proscar, Propecia) and dutasteride (Avodart) are helpful in the treatment of BPH because of their effect on {Ans: prostate size.}Concerning hepatitis B virus (HBV) vaccine, which