Which statement(s) about variables that influence drug action ...

[cagreen833]

Which statement(s) about variables that influence drug action is/are true? (Select all that apply.)
 
  a. An older adult will require increased dosage of a drug to achieve the same therapeutic effect as that seen in a younger person.
  b. Body weight can affect the therapeutic response of a medication.
  c. Chronic smokers may metabolize drugs more rapidly than nonsmokers.
  d. A patient's attitude and expectations affect the response to medication.
  e. Reduced circulation causes drugs to absorb more rapidly.

Question 2

A patient receives 200 mg of a medication that has a half-life of 12 hours. How many mg of the drug would remain in the patient's body after 24 hours?
 
  What will be an ideal response?

[Beatricemm]

Answer to Question 1

ANS: B, C, D
Body weight can affect response to medications; typically, obese patients require an increase in dosage and underweight patients a decrease in dosage. Chronic smoking enhances metabolism of drugs. Attitudes and expectations play a major role in an individual's response to drugs. Older adults require decreased dosages of drugs to achieve a therapeutic effect. Decreased circulation causes drugs to absorb more slowly.

Answer to Question 2

ANS:
50

The half-life is defined as the amount of time required for 50 of the drug to be eliminated from the body. If a patient is given 200 mg of a drug that has a half-life of 12 hours, then 50 mg of the drug would remain in the body after 24 hours.

[cagreen833]

TY

[Beatricemm]

You're welcome