NCLEX Chapter 5 - Pharmacodynamics questions and answers

NCLEX Chapter 5 - PharmacodynamicsWhich statement by the nursing student indicates a need for further instruction about drug selectivity? "Botulinum toxin is very selective and therefore very safe for administration." "Selective drug action is made possible by many types of receptors in the body." "The more selective a drug is, the fewer side effects it will produce." "Even though a drug is selective, it can produce nonselective results." - correct answer "Botulinum toxin is very selective and therefore very safe for administration." Rationale: Selectivity does not guarantee safety. Botulinum toxin can cause paralysis of respiratory muscles, resulting in death from respiratory arrest. All of the remaining statements about receptors and selectivity of drug action are correct. The nurse is preparing to administer a drug with a high therapeutic index. What does this mean about the drug? It is very potent. It has a low efficacy. It is probably lethal. It is relatively safe. - correct answer It is relatively safe