ATI Pharmacology 2026/2027 Study Guide |
ACTUAL-Style ATI Pharmacology Practice
Questions & Answers, RN Pharmacology Exam Prep,
Verified Answers, Detailed Rationales, Medication
Administration, Pharmacokinetics &
Pharmacodynamics, Drug Classifications,
Cardiovascular, Respiratory, Neurologic, Endocrine,
GI, Infection, Pain & Inflammation Medications,
Practice Test & Comprehensive Nursing Review
Question 1: A nurse is reviewing a client's medication history and notes
that the client takes a drug with a narrow therapeutic index. Which of
the following statements by the nurse indicates an accurate
understanding of this concept?
A. "The client can safely take the medication without monitoring."
B. "Small changes in the drug's blood level can lead to toxicity or
therapeutic failure."
C. "The medication has a high margin of safety."
D. "The drug requires minimal follow-up once therapy begins."
CORRECT ANSWER: B. "Small changes in the drug's blood level can
lead to toxicity or therapeutic failure."
Rationale: A narrow therapeutic index means the range between
therapeutic and toxic doses is very small. Even minor fluctuations in blood
concentration can cause therapeutic failure or toxicity, necessitating
regular monitoring of serum drug levels .
Question 2: A nurse is teaching a client who has a new prescription for
a medication with a high risk for toxicity. Which of the following
instructions should the nurse include?
A. "You should double the dose if you miss a scheduled dose."
B. "Periodic laboratory tests will be needed to measure your drug levels."
C. "Stop taking the medication immediately if you feel better."
D. "Take the medication with grapefruit juice to increase absorption."
CORRECT ANSWER: B. "Periodic laboratory tests will be needed to
measure your drug levels."
,Rationale: Drugs with high toxicity potential require regular serum drug
level monitoring to ensure concentrations remain within the therapeutic
range. Doubling doses, stopping early, or consuming grapefruit juice can
lead to dangerous complications .
Question 3: A nurse is caring for a client who reports experiencing an
adverse effect from a medication. Which of the following responses by
the nurse is most appropriate?
A. "Adverse effects are the intended therapeutic effects of the drug."
B. "You should decrease your dose until the effects go away."
C. "You should contact your provider if adverse effects occur."
D. "Adverse effects indicate a severe allergic reaction."
CORRECT ANSWER: C. "You should contact your provider if adverse
effects occur."
Rationale: Adverse effects can be unexpected or unintended and may
range from minor to life-threatening. The client should notify the provider,
who can determine whether dosage adjustments or medication changes
are necessary. Clients should never adjust doses independently .
Question 4: A nurse is preparing to administer IV morphine to a
postoperative client. The client reports pain rated 8/10 but has a
respiratory rate of 9 breaths/min. Which of the following actions should
the nurse take?
A. Administer the morphine as prescribed and monitor every 15 minutes.
B. Hold the medication and notify the provider of respiratory depression.
C. Administer naloxone concurrently with the morphine.
D. Reassess the pain level in 30 minutes before proceeding.
CORRECT ANSWER: B. Hold the medication and notify the provider of
respiratory depression.
Rationale: A respiratory rate below 12 breaths/min indicates opioid-
induced respiratory depression. Administering morphine could worsen the
condition and lead to respiratory arrest. The nurse must withhold the dose
and notify the provider immediately .
Question 5: A nurse is teaching a client who has been prescribed
isoniazid and rifampin for tuberculosis. Which of the following
statements by the client indicates correct understanding?
,A. "Rifampin may cause yellowing of the eyes, which is harmless."
B. "I should notify my provider if I experience numbness or tingling in my
hands or feet."
C. "I can stop taking isoniazid once I feel better after a few weeks."
D. "I should take these medications with food to increase absorption."
CORRECT ANSWER: B. "I should notify my provider if I experience
numbness or tingling in my hands or feet."
Rationale: Isoniazid can cause peripheral neuropathy due to vitamin B6
depletion, manifested by numbness or tingling. Clients must report these
symptoms, and vitamin B6 is often prescribed prophylactically. TB
medications require strict adherence to prevent resistance .
Question 6: A nurse is caring for a client who has heart failure and is
receiving digoxin. The client reports nausea, anorexia, and blurred
vision. The client's digoxin level is 2.2 ng/mL and potassium is 3.1
mEq/L. Which of the following actions should the nurse take first?
A. Document findings and reassess in 1 hour.
B. Administer potassium supplements and continue digoxin.
C. Notify the provider of digoxin toxicity and hold the dose.
D. Encourage intake of potassium-rich foods and fluids.
CORRECT ANSWER: C. Notify the provider of digoxin toxicity and hold
the dose.
Rationale: A digoxin level above 2.0 ng/mL with symptoms of nausea,
anorexia, bradycardia, and vision changes indicates digoxin toxicity.
Hypokalemia increases sensitivity to digoxin and the risk of arrhythmias.
The nurse should hold the medication and notify the provider immediately .
Question 7: A nurse is caring for a client who has been prescribed
lisinopril for hypertension. On the third day of therapy, the client
develops a persistent dry cough. Which of the following responses by
the nurse is most appropriate?
A. "This is a common adverse effect of lisinopril that may require a
medication change."
B. "You should double your dose to counteract this effect."
C. "This indicates you are allergic to the medication and should go to the
, emergency room."
D. "The cough will resolve within 24 hours and requires no intervention."
CORRECT ANSWER: A. "This is a common adverse effect of lisinopril
that may require a medication change."
Rationale: A persistent dry cough is a well-known adverse effect of ACE
inhibitors like lisinopril, caused by bradykinin accumulation. If intolerable,
the provider may switch to an ARB. Clients should not adjust doses
independently .
Question 8: A nurse is providing discharge teaching to a client who has
a new prescription for clozapine. Which of the following instructions
should the nurse include?
A. "You should have a high-carbohydrate snack between meals."
B. "You are likely to develop hand tremors with long-term use."
C. "You should have your white blood cell count monitored weekly."
D. "You may experience temporary numbness of your mouth after each
dose."
CORRECT ANSWER: C. "You should have your white blood cell count
monitored weekly."
Rationale: Clozapine carries a risk for fatal agranulocytosis. Weekly white
blood cell count monitoring is required to detect this life-threatening
adverse effect early .
Question 9: A nurse is teaching a male client who has schizophrenia
and is taking risperidone. Which of the following instructions should
the nurse include?
A. "Add extra snacks to your diet to prevent weight loss."
B. "Notify your provider if you develop breast enlargement."
C. "You may begin to have mild seizures while taking this medication."
D. "This medication is likely to increase your libido."
CORRECT ANSWER: B. "Notify your provider if you develop breast
enlargement."
Rationale: Risperidone can increase prolactin levels, leading to
gynecomastia (breast enlargement) and galactorrhea. Clients should
ACTUAL-Style ATI Pharmacology Practice
Questions & Answers, RN Pharmacology Exam Prep,
Verified Answers, Detailed Rationales, Medication
Administration, Pharmacokinetics &
Pharmacodynamics, Drug Classifications,
Cardiovascular, Respiratory, Neurologic, Endocrine,
GI, Infection, Pain & Inflammation Medications,
Practice Test & Comprehensive Nursing Review
Question 1: A nurse is reviewing a client's medication history and notes
that the client takes a drug with a narrow therapeutic index. Which of
the following statements by the nurse indicates an accurate
understanding of this concept?
A. "The client can safely take the medication without monitoring."
B. "Small changes in the drug's blood level can lead to toxicity or
therapeutic failure."
C. "The medication has a high margin of safety."
D. "The drug requires minimal follow-up once therapy begins."
CORRECT ANSWER: B. "Small changes in the drug's blood level can
lead to toxicity or therapeutic failure."
Rationale: A narrow therapeutic index means the range between
therapeutic and toxic doses is very small. Even minor fluctuations in blood
concentration can cause therapeutic failure or toxicity, necessitating
regular monitoring of serum drug levels .
Question 2: A nurse is teaching a client who has a new prescription for
a medication with a high risk for toxicity. Which of the following
instructions should the nurse include?
A. "You should double the dose if you miss a scheduled dose."
B. "Periodic laboratory tests will be needed to measure your drug levels."
C. "Stop taking the medication immediately if you feel better."
D. "Take the medication with grapefruit juice to increase absorption."
CORRECT ANSWER: B. "Periodic laboratory tests will be needed to
measure your drug levels."
,Rationale: Drugs with high toxicity potential require regular serum drug
level monitoring to ensure concentrations remain within the therapeutic
range. Doubling doses, stopping early, or consuming grapefruit juice can
lead to dangerous complications .
Question 3: A nurse is caring for a client who reports experiencing an
adverse effect from a medication. Which of the following responses by
the nurse is most appropriate?
A. "Adverse effects are the intended therapeutic effects of the drug."
B. "You should decrease your dose until the effects go away."
C. "You should contact your provider if adverse effects occur."
D. "Adverse effects indicate a severe allergic reaction."
CORRECT ANSWER: C. "You should contact your provider if adverse
effects occur."
Rationale: Adverse effects can be unexpected or unintended and may
range from minor to life-threatening. The client should notify the provider,
who can determine whether dosage adjustments or medication changes
are necessary. Clients should never adjust doses independently .
Question 4: A nurse is preparing to administer IV morphine to a
postoperative client. The client reports pain rated 8/10 but has a
respiratory rate of 9 breaths/min. Which of the following actions should
the nurse take?
A. Administer the morphine as prescribed and monitor every 15 minutes.
B. Hold the medication and notify the provider of respiratory depression.
C. Administer naloxone concurrently with the morphine.
D. Reassess the pain level in 30 minutes before proceeding.
CORRECT ANSWER: B. Hold the medication and notify the provider of
respiratory depression.
Rationale: A respiratory rate below 12 breaths/min indicates opioid-
induced respiratory depression. Administering morphine could worsen the
condition and lead to respiratory arrest. The nurse must withhold the dose
and notify the provider immediately .
Question 5: A nurse is teaching a client who has been prescribed
isoniazid and rifampin for tuberculosis. Which of the following
statements by the client indicates correct understanding?
,A. "Rifampin may cause yellowing of the eyes, which is harmless."
B. "I should notify my provider if I experience numbness or tingling in my
hands or feet."
C. "I can stop taking isoniazid once I feel better after a few weeks."
D. "I should take these medications with food to increase absorption."
CORRECT ANSWER: B. "I should notify my provider if I experience
numbness or tingling in my hands or feet."
Rationale: Isoniazid can cause peripheral neuropathy due to vitamin B6
depletion, manifested by numbness or tingling. Clients must report these
symptoms, and vitamin B6 is often prescribed prophylactically. TB
medications require strict adherence to prevent resistance .
Question 6: A nurse is caring for a client who has heart failure and is
receiving digoxin. The client reports nausea, anorexia, and blurred
vision. The client's digoxin level is 2.2 ng/mL and potassium is 3.1
mEq/L. Which of the following actions should the nurse take first?
A. Document findings and reassess in 1 hour.
B. Administer potassium supplements and continue digoxin.
C. Notify the provider of digoxin toxicity and hold the dose.
D. Encourage intake of potassium-rich foods and fluids.
CORRECT ANSWER: C. Notify the provider of digoxin toxicity and hold
the dose.
Rationale: A digoxin level above 2.0 ng/mL with symptoms of nausea,
anorexia, bradycardia, and vision changes indicates digoxin toxicity.
Hypokalemia increases sensitivity to digoxin and the risk of arrhythmias.
The nurse should hold the medication and notify the provider immediately .
Question 7: A nurse is caring for a client who has been prescribed
lisinopril for hypertension. On the third day of therapy, the client
develops a persistent dry cough. Which of the following responses by
the nurse is most appropriate?
A. "This is a common adverse effect of lisinopril that may require a
medication change."
B. "You should double your dose to counteract this effect."
C. "This indicates you are allergic to the medication and should go to the
, emergency room."
D. "The cough will resolve within 24 hours and requires no intervention."
CORRECT ANSWER: A. "This is a common adverse effect of lisinopril
that may require a medication change."
Rationale: A persistent dry cough is a well-known adverse effect of ACE
inhibitors like lisinopril, caused by bradykinin accumulation. If intolerable,
the provider may switch to an ARB. Clients should not adjust doses
independently .
Question 8: A nurse is providing discharge teaching to a client who has
a new prescription for clozapine. Which of the following instructions
should the nurse include?
A. "You should have a high-carbohydrate snack between meals."
B. "You are likely to develop hand tremors with long-term use."
C. "You should have your white blood cell count monitored weekly."
D. "You may experience temporary numbness of your mouth after each
dose."
CORRECT ANSWER: C. "You should have your white blood cell count
monitored weekly."
Rationale: Clozapine carries a risk for fatal agranulocytosis. Weekly white
blood cell count monitoring is required to detect this life-threatening
adverse effect early .
Question 9: A nurse is teaching a male client who has schizophrenia
and is taking risperidone. Which of the following instructions should
the nurse include?
A. "Add extra snacks to your diet to prevent weight loss."
B. "Notify your provider if you develop breast enlargement."
C. "You may begin to have mild seizures while taking this medication."
D. "This medication is likely to increase your libido."
CORRECT ANSWER: B. "Notify your provider if you develop breast
enlargement."
Rationale: Risperidone can increase prolactin levels, leading to
gynecomastia (breast enlargement) and galactorrhea. Clients should
