A client who has been taking cimetidine for hyperacidity calls the clinic to say that the medication has not been effective. The nurse reviews his history and notes that which factor may be influencing the effectiveness of this drug?
He takes the cimetidine with meals.
He takes an antacid 3 hours after the cimetidine dose.
He drinks a glass of water with each dose.
He smokes two packs of cigarettes a day.
The Correct Answer is D
D. smoking increases acid production counteracting the effects of cimetidine
A. Cimetidine should be taken with meals
B. Other medications including antacids can be taken 2hrs after cimetidine
C. Water has no effect on effectiveness of cimetidine
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
D. Therapeutic index refers to the doses that results in desired outcome with adverse effects. It is between the safe and toxic levels. Narrow therapeutic level means the two are very close.
A. How effective a drug is termed as efficacy
B. Such a drug does not exist as it is not safe
C. Effectiveness of very small dose is termed as potency
Correct Answer is B
Explanation
adrenergic drugs mimic the sympathetic nervous system
A, C and D- these are parasympathetic effects
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