ATI RN
ATI Pharmacology Exam 1 Questions
Extract:
Question 1 of 5
The nurse gives 800 mg of a drug that has a half-life of 8 hours. How much drug will be left in the body in 24 hours if no additional drug is given?
Correct Answer: C
Rationale: The drug's half-life is 8 hours, meaning its concentration halves every 8 hours. Starting with 800 mg: at 8 hours, 400 mg remains; at 16 hours, 200 mg; at 24 hours, 100 mg. Thus, 100 mg remains after 24 hours.
Question 2 of 5
A nurse is administering medication at the bedside. Which of the following actions should be the first priority?
Correct Answer: A
Rationale: Verifying the patient's identity is the first priority to ensure the right patient receives the medication, preventing errors.
Question 3 of 5
The nurse understands that the length of time needed for a drug to reach the minimum effective concentration (MEC) is the
Correct Answer: B
Rationale: Onset of action is the time from administration to when the drug reaches MEC, initiating its therapeutic effect, influenced by absorption and distribution rates.
Question 4 of 5
A patient who is hospitalized for chronic obstructive pulmonary disease wants to go home. The nurse and the patient discuss the patient's situation and decide that the patient may go home when able to perform self-care without dyspnea and hypoxia. This is an example of which phase of the nursing process?
Correct Answer: D
Rationale: Setting discharge criteria, like self-care without dyspnea or hypoxia, is part of the planning phase, establishing goals for patient outcomes.
Question 5 of 5
A nurse working in radiology administers iodine to a patient who is having a computed tomography (CT) scan. The nurse working on the oncology unit administers chemotherapy to patients who have cancer. At the Public Health Department, a nurse administers a measles-mumps-rubella (MMR) vaccine to a 14-month-old child as a routine immunization. Which branch of pharmacology best describes the actions of all three nurses?
Correct Answer: B
Rationale: Pharmacotherapeutics involves using drugs for diagnosis, treatment, and prevention, encompassing the nurses' actions in administering iodine, chemotherapy, and vaccines.