ATI RN Pharmacology Proctored Exam Practice Questions
Questions 1-10: Pharmacological Principles & Medication
Administration 2026
1. A nurse is preparing to administer a prescribed medication that has a high first-pass effect. The nurse
should expect the provider to prescribe which route of administration to avoid this effect?
A. Oral
B. Sublingual
C. Rectal
D. Enteral
Correct ANSWER: B. Sublingual
Rationale: The first-pass effect is the metabolism of a drug by the liver before it reaches systemic
circulation, which significantly reduces its bioavailability. Drugs administered via the sublingual (under
the tongue) or buccal route enter the systemic circulation directly, bypassing the hepatic portal system
and thus avoiding the first-pass effect.
2. A client is prescribed a medication that is 95% protein-bound. Which of the following statements is
correct regarding this medication?
A. It has a high volume of distribution.
B. It has a low volume of distribution.
C. Only 5% of the drug is pharmacologically active.
D. It is rapidly excreted by the kidneys.
Correct ANSWER: C. Only 5% of the drug is pharmacologically active.
,Rationale: Only the unbound (free) fraction of a drug is pharmacologically active and able to exert its
therapeutic effect. A drug that is 95% protein-bound means only 5% is free and active. A high degree of
protein binding also means the drug has a low volume of distribution and a longer duration of action, as
the bound portion acts as a reservoir.
3. A nurse is teaching a client about a new medication. Which of the following statements by the client
indicates a need for further teaching?
A. "I will take this medication with a full glass of water."
B. "I can crush the extended-release tablet if I have trouble swallowing it."
C. "I should not take this medication with grapefruit juice."
D. "I will keep a list of all my medications in my wallet."
Correct ANSWER: B. "I can crush the extended-release tablet if I have trouble swallowing it."
Rationale: Extended-release (ER), sustained-release (SR), and enteric-coated medications should never
be crushed, chewed, or dissolved. Doing so can destroy the time-release mechanism, leading to a
potentially dangerous rapid release of the entire dose (dose dumping) and increasing the risk of toxicity.
4. A nurse is preparing to administer an intramuscular (IM) injection of a viscous medication to an adult
client. Which of the following actions should the nurse take?
A. Use a 25-gauge, 5/8-inch needle.
B. Administer the injection using the Z-track method.
C. Administer the injection into the deltoid muscle.
D. Use a 22-gauge, 1½-inch needle.
Correct ANSWER: D. Use a 22-gauge, 1½-inch needle.
Rationale: Viscous medications require a larger lumen needle (lower gauge number) to facilitate
administration. A 22-gauge needle is appropriate. The length of the needle depends on the client's
muscle mass and the injection site; for an IM injection in an adult, a 1- to 1½-inch needle is typically used
to reach the muscle belly.
,5. A nurse is caring for a client who is receiving a continuous IV infusion of heparin. Which of the
following laboratory values should the nurse monitor to evaluate the therapeutic effect of this
medication?
A. PT (Prothrombin Time)
B. aPTT (Activated Partial Thromboplastin Time)
C. INR (International Normalized Ratio)
D. Platelet count
Correct ANSWER: B. aPTT (Activated Partial Thromboplastin Time)
Rationale: Heparin is an anticoagulant that works by inactivating thrombin and factor Xa. The aPTT is the
primary lab test used to monitor the therapeutic effect of unfractionated heparin. The therapeutic goal
is typically an aPTT 1.5 to 2.5 times the normal control value.
6. A nurse is providing teaching to a client who has a new prescription for warfarin. Which of the
following statements by the client indicates an understanding of the teaching?
A. "I will need to have my blood tested regularly to check my platelet count."
B. "I will increase my intake of leafy green vegetables."
C. "I will use a soft-bristled toothbrush."
D. "I can take ibuprofen for headaches."
Correct ANSWER: C. "I will use a soft-bristled toothbrush."
Rationale: Warfarin is an anticoagulant that increases the risk of bleeding. Using a soft-bristled
toothbrush minimizes trauma to the gums and reduces the risk of bleeding. Clients should also use an
electric razor for shaving and avoid activities that could cause injury.
7. A nurse is preparing to administer a blood transfusion to a client. Which of the following actions
should the nurse take first?
A. Obtain the client's vital signs.
B. Verify the client's identity using two identifiers.
C. Prime the IV tubing with normal saline.
, D. Assess for a history of transfusion reactions.
Correct ANSWER: B. Verify the client's identity using two identifiers.
Rationale: Patient safety is the priority. Before any procedure, including a blood transfusion, the nurse
must verify the client's identity using at least two identifiers (e.g., name and date of birth) to ensure the
correct blood product is administered to the correct client.
8. A nurse is reviewing the medication administration record for a client who has a history of severe
allergic reactions. Which of the following routes of administration carries the highest risk for
anaphylaxis?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
Correct ANSWER: D. Intravenous
Rationale: Intravenous (IV) administration delivers the medication directly into the bloodstream,
resulting in the most rapid absorption and the highest peak serum concentration. This route carries the
greatest risk for anaphylaxis and other adverse reactions because there is no barrier to absorption.
9. A nurse is caring for a client who is prescribed a medication that has a narrow therapeutic index.
Which of the following actions is most important for the nurse to take?
A. Monitor the client for adverse effects.
B. Administer the medication with food.
C. Monitor serum drug levels.
D. Assess the client's renal function.
Correct ANSWER: C. Monitor serum drug levels.
Questions 1-10: Pharmacological Principles & Medication
Administration 2026
1. A nurse is preparing to administer a prescribed medication that has a high first-pass effect. The nurse
should expect the provider to prescribe which route of administration to avoid this effect?
A. Oral
B. Sublingual
C. Rectal
D. Enteral
Correct ANSWER: B. Sublingual
Rationale: The first-pass effect is the metabolism of a drug by the liver before it reaches systemic
circulation, which significantly reduces its bioavailability. Drugs administered via the sublingual (under
the tongue) or buccal route enter the systemic circulation directly, bypassing the hepatic portal system
and thus avoiding the first-pass effect.
2. A client is prescribed a medication that is 95% protein-bound. Which of the following statements is
correct regarding this medication?
A. It has a high volume of distribution.
B. It has a low volume of distribution.
C. Only 5% of the drug is pharmacologically active.
D. It is rapidly excreted by the kidneys.
Correct ANSWER: C. Only 5% of the drug is pharmacologically active.
,Rationale: Only the unbound (free) fraction of a drug is pharmacologically active and able to exert its
therapeutic effect. A drug that is 95% protein-bound means only 5% is free and active. A high degree of
protein binding also means the drug has a low volume of distribution and a longer duration of action, as
the bound portion acts as a reservoir.
3. A nurse is teaching a client about a new medication. Which of the following statements by the client
indicates a need for further teaching?
A. "I will take this medication with a full glass of water."
B. "I can crush the extended-release tablet if I have trouble swallowing it."
C. "I should not take this medication with grapefruit juice."
D. "I will keep a list of all my medications in my wallet."
Correct ANSWER: B. "I can crush the extended-release tablet if I have trouble swallowing it."
Rationale: Extended-release (ER), sustained-release (SR), and enteric-coated medications should never
be crushed, chewed, or dissolved. Doing so can destroy the time-release mechanism, leading to a
potentially dangerous rapid release of the entire dose (dose dumping) and increasing the risk of toxicity.
4. A nurse is preparing to administer an intramuscular (IM) injection of a viscous medication to an adult
client. Which of the following actions should the nurse take?
A. Use a 25-gauge, 5/8-inch needle.
B. Administer the injection using the Z-track method.
C. Administer the injection into the deltoid muscle.
D. Use a 22-gauge, 1½-inch needle.
Correct ANSWER: D. Use a 22-gauge, 1½-inch needle.
Rationale: Viscous medications require a larger lumen needle (lower gauge number) to facilitate
administration. A 22-gauge needle is appropriate. The length of the needle depends on the client's
muscle mass and the injection site; for an IM injection in an adult, a 1- to 1½-inch needle is typically used
to reach the muscle belly.
,5. A nurse is caring for a client who is receiving a continuous IV infusion of heparin. Which of the
following laboratory values should the nurse monitor to evaluate the therapeutic effect of this
medication?
A. PT (Prothrombin Time)
B. aPTT (Activated Partial Thromboplastin Time)
C. INR (International Normalized Ratio)
D. Platelet count
Correct ANSWER: B. aPTT (Activated Partial Thromboplastin Time)
Rationale: Heparin is an anticoagulant that works by inactivating thrombin and factor Xa. The aPTT is the
primary lab test used to monitor the therapeutic effect of unfractionated heparin. The therapeutic goal
is typically an aPTT 1.5 to 2.5 times the normal control value.
6. A nurse is providing teaching to a client who has a new prescription for warfarin. Which of the
following statements by the client indicates an understanding of the teaching?
A. "I will need to have my blood tested regularly to check my platelet count."
B. "I will increase my intake of leafy green vegetables."
C. "I will use a soft-bristled toothbrush."
D. "I can take ibuprofen for headaches."
Correct ANSWER: C. "I will use a soft-bristled toothbrush."
Rationale: Warfarin is an anticoagulant that increases the risk of bleeding. Using a soft-bristled
toothbrush minimizes trauma to the gums and reduces the risk of bleeding. Clients should also use an
electric razor for shaving and avoid activities that could cause injury.
7. A nurse is preparing to administer a blood transfusion to a client. Which of the following actions
should the nurse take first?
A. Obtain the client's vital signs.
B. Verify the client's identity using two identifiers.
C. Prime the IV tubing with normal saline.
, D. Assess for a history of transfusion reactions.
Correct ANSWER: B. Verify the client's identity using two identifiers.
Rationale: Patient safety is the priority. Before any procedure, including a blood transfusion, the nurse
must verify the client's identity using at least two identifiers (e.g., name and date of birth) to ensure the
correct blood product is administered to the correct client.
8. A nurse is reviewing the medication administration record for a client who has a history of severe
allergic reactions. Which of the following routes of administration carries the highest risk for
anaphylaxis?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
Correct ANSWER: D. Intravenous
Rationale: Intravenous (IV) administration delivers the medication directly into the bloodstream,
resulting in the most rapid absorption and the highest peak serum concentration. This route carries the
greatest risk for anaphylaxis and other adverse reactions because there is no barrier to absorption.
9. A nurse is caring for a client who is prescribed a medication that has a narrow therapeutic index.
Which of the following actions is most important for the nurse to take?
A. Monitor the client for adverse effects.
B. Administer the medication with food.
C. Monitor serum drug levels.
D. Assess the client's renal function.
Correct ANSWER: C. Monitor serum drug levels.
