ATI LPN
Pharmacology and the Nursing Process 10th Edition Test Bank
Chapter 2 : Pharmacologic Principles Questions
Question 1 of 5
The nurse is reviewing pharmacology terms for a group of newly graduated nurses. Which sentence defines a drug's half-life?
Correct Answer: C
Rationale: A drug's half-life is the time it takes for one half of the original amount of a drug to be removed from the body. It is a measure of the rate at which drugs are removed from the body. The other options are incorrect definitions of half-life.
Question 2 of 5
When administering drugs, the nurse remembers that the duration of action of a drug is defined as which of these?
Correct Answer: D
Rationale: Duration of action is the time during which drug's concentration is sufficient to elicit a therapeutic response. The other options do not define duration of action. A drug's onset of action is the time it takes for the drug to elicit a therapeutic response. A drug's peak effect is the time it takes for the drug to reach its maximum therapeutic response. Elimination is the length of time it takes to remove a drug from circulation.
Question 3 of 5
When reviewing the mechanism of action of a specific drug, the nurse reads that the drug works by selective enzyme interaction. Which of these processes describes selective enzyme interaction?
Correct Answer: D
Rationale: With selective enzyme interaction, the drug attracts the enzymes to bind with the drug instead of allowing the enzymes to bind with their normal target cells. As a result, the target cells are protected from the action of the enzymes. This results in a drug effect. The actions described in the other options do not occur with selective enzyme interactions.
Question 4 of 5
When administering a new medication to a patient, the nurse reads that it is highly protein bound. Assuming that the patient's albumin levels are normal, the nurse would expect which result, as compared to a medication, that is not highly protein bound?
Correct Answer: D
Rationale: Drugs that are bound to plasma proteins are characterized by longer duration of action. Protein binding does not make renal excretion faster, does not speed up drug metabolism, and does not cause the duration of action to be shorter.
Question 5 of 5
The patient is experiencing chest pain and needs to take a buccal form of nitroglycerin. Where does the nurse instruct the patient to place the tablet?
Correct Answer: D
Rationale: Drugs administered via the buccal route are placed in the space between the cheek and the gum. Drugs administered via the sublingual route are placed under the tongue. The other options are incorrect.