ATI Pharmacology: Medication Safety & Drug Administration Exam 1
2026 |Questions |Answers |Rationales
1. A nurse is preparing to administer a medication to a client. Which of the
following is the most reliable method for identifying the client?
A. Check the client’s room number against the MAR.
B. Ask the client’s family member to verify the identity.
C. Compare the client’s name and ID number on the wristband with the MAR.
D. Call the client by name and wait for a response.
Answer: C
Rationale: Using two unique identifiers, such as the name and medical record number on
the wristband compared to the medication administration record, is the standard for
safety.
2. A nurse is preparing to administer an oral medication. Which factor
determines the rate of drug absorption in the GI tract?
A. The client’s height.
B. Gastric pH and presence of food.
C. The time of day the drug is given.
D. The client’s cognitive status.
Answer: B
Rationale: Gastric acidity, emptying time, and the presence of food significantly affect how
quickly oral medications are absorbed into the bloodstream.
,3. Which of the following routes of medication administration has the fastest
onset of action?
A. Subcutaneous
B. Intramuscular
C. Oral
D. Intravenous
Answer: D
Rationale: Intravenous administration places the medication directly into the systemic
circulation, bypassing absorption barriers and providing immediate effect.
4. A nurse is reviewing a medication order that reads: ‘Digoxin 0.125 mg PO
daily.’ Which of the following components is missing from the order?
A. Route
B. Frequency
C. The order is complete.
D. Dosage
Answer: C
Rationale: The order contains the drug name (Digoxin), dosage (0.125 mg), route (PO),
and frequency (daily). It is a complete order.
5. What is the primary site of drug metabolism in the body?
A. Liver
B. Lungs
C. Kidneys
D. Small Intestine
Answer: A
Rationale: The liver is the primary organ responsible for the metabolic breakdown of
drugs through enzymatic processes.
, 6. A client has a new prescription for a medication with a narrow therapeutic
index. The nurse should monitor for which of the following?
A. Signs of drug toxicity.
B. Rapid excretion of the drug.
C. Increased frequency of dosing.
D. Decreased need for blood tests.
Answer: A
Rationale: A narrow therapeutic index means the difference between a therapeutic dose
and a toxic dose is very small, requiring close monitoring.
7. A nurse is caring for a client with impaired renal function. Which
pharmacokinetic phase is most likely to be affected?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Answer: A
Rationale: The kidneys are the primary organ for drug excretion. Impaired renal function
leads to a risk of drug accumulation and toxicity.
8. Which of the following describes the ‘first-pass effect’?
A. The initial distribution of a drug to the brain.
B. The inactivation of a drug by the liver before it reaches systemic circulation.
C. The time it takes for half of the drug to leave the body.
D. The binding of a drug to plasma proteins.
Answer: B
Rationale: The first-pass effect occurs when oral drugs are metabolized by the liver
immediately after absorption from the GI tract, reducing the active amount available.
2026 |Questions |Answers |Rationales
1. A nurse is preparing to administer a medication to a client. Which of the
following is the most reliable method for identifying the client?
A. Check the client’s room number against the MAR.
B. Ask the client’s family member to verify the identity.
C. Compare the client’s name and ID number on the wristband with the MAR.
D. Call the client by name and wait for a response.
Answer: C
Rationale: Using two unique identifiers, such as the name and medical record number on
the wristband compared to the medication administration record, is the standard for
safety.
2. A nurse is preparing to administer an oral medication. Which factor
determines the rate of drug absorption in the GI tract?
A. The client’s height.
B. Gastric pH and presence of food.
C. The time of day the drug is given.
D. The client’s cognitive status.
Answer: B
Rationale: Gastric acidity, emptying time, and the presence of food significantly affect how
quickly oral medications are absorbed into the bloodstream.
,3. Which of the following routes of medication administration has the fastest
onset of action?
A. Subcutaneous
B. Intramuscular
C. Oral
D. Intravenous
Answer: D
Rationale: Intravenous administration places the medication directly into the systemic
circulation, bypassing absorption barriers and providing immediate effect.
4. A nurse is reviewing a medication order that reads: ‘Digoxin 0.125 mg PO
daily.’ Which of the following components is missing from the order?
A. Route
B. Frequency
C. The order is complete.
D. Dosage
Answer: C
Rationale: The order contains the drug name (Digoxin), dosage (0.125 mg), route (PO),
and frequency (daily). It is a complete order.
5. What is the primary site of drug metabolism in the body?
A. Liver
B. Lungs
C. Kidneys
D. Small Intestine
Answer: A
Rationale: The liver is the primary organ responsible for the metabolic breakdown of
drugs through enzymatic processes.
, 6. A client has a new prescription for a medication with a narrow therapeutic
index. The nurse should monitor for which of the following?
A. Signs of drug toxicity.
B. Rapid excretion of the drug.
C. Increased frequency of dosing.
D. Decreased need for blood tests.
Answer: A
Rationale: A narrow therapeutic index means the difference between a therapeutic dose
and a toxic dose is very small, requiring close monitoring.
7. A nurse is caring for a client with impaired renal function. Which
pharmacokinetic phase is most likely to be affected?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Answer: A
Rationale: The kidneys are the primary organ for drug excretion. Impaired renal function
leads to a risk of drug accumulation and toxicity.
8. Which of the following describes the ‘first-pass effect’?
A. The initial distribution of a drug to the brain.
B. The inactivation of a drug by the liver before it reaches systemic circulation.
C. The time it takes for half of the drug to leave the body.
D. The binding of a drug to plasma proteins.
Answer: B
Rationale: The first-pass effect occurs when oral drugs are metabolized by the liver
immediately after absorption from the GI tract, reducing the active amount available.
