ATI PHARMACOLOGY FINAL TEST QUESTIONS &
ANSWERS | HS MISC | ECPI University Newport
News | Verified Q&A | Pass Guaranteed - A+
Graded
Pharmacological Foundations & Medication Safety
Q1: A patient is prescribed a medication with a half-life of 6 hours. Approximately
how long will it take for the drug to reach steady-state concentration with regular
dosing?
A. 6 hours
B. 12 hours
C. 24-30 hours [CORRECT]
D. 48 hours
Correct Answer: C
Rationale: Steady-state concentration is typically reached after 4-5 half-lives. With a
6-hour half-life, this would be 24-30 hours. This principle is important for
determining when therapeutic effects will be consistent and when to assess for
efficacy or toxicity.
Q2: A nurse is administering a high-alert medication. Which safety practice is
required?
A. Single nurse verification is sufficient
B. Independent double-check by two nurses [CORRECT]
C. Pharmacy verification only
D. Patient self-administration
Correct Answer: B
Rationale: High-alert medications (insulin, anticoagulants, chemotherapy, opioids)
,require independent double-check by two nurses to prevent errors. This means both
nurses calculate separately and compare results without influencing each other.
Single verification is insufficient for these high-risk drugs.
Q3: A patient is taking warfarin. Which laboratory value indicates therapeutic
anticoagulation for atrial fibrillation?
A. INR 0.8
B. INR 1.5
C. INR 2.0-3.0 [CORRECT]
D. INR 4.5
Correct Answer: C
Rationale: For atrial fibrillation and most indications, warfarin therapeutic range is
INR 2.0-3.0. Below 2.0 increases thrombosis risk; above 3.0 increases bleeding risk.
INR 4.5 indicates supratherapeutic levels requiring vitamin K and holding doses.
Mechanical valves require higher targets (2.5-3.5).
Q4: A nurse discovers a medication error after administration. What is the priority
action?
A. Document the error in the patient's chart only
B. Notify the provider, assess the patient, and complete the incident report
[CORRECT]
C. Wait to see if the patient develops symptoms
D. Ask the pharmacy to change the order
Correct Answer: B
Rationale: When a medication error occurs, the nurse must first assess the patient
for adverse effects, notify the provider for orders, and complete an incident report.
Incident reports are for quality improvement and should not be referenced in the
medical record. Delaying assessment risks patient harm.
,Q5: A patient is prescribed a drug that is an agonist at beta-2 receptors. Which effect
would the nurse expect?
A. Bronchoconstriction and decreased heart rate
B. Bronchodilation and potential tremors [CORRECT]
C. Increased blood pressure and bradycardia
D. Decreased gastric motility and urinary retention
Correct Answer: B
Rationale: Beta-2 agonists (albuterol, salmeterol) cause bronchodilation (primary
therapeutic effect) and may cause tremors as a side effect due to beta-2 receptor
stimulation in skeletal muscle. Beta-1 receptors are primarily cardiac; beta-2 are
primarily pulmonary and vascular.
Q6: A patient has a serum digoxin level of 3.2 ng/mL. Which finding indicates digoxin
toxicity?
A. Improved exercise tolerance
B. Nausea, vomiting, and yellow-green visual halos [CORRECT]
C. Decreased heart rate to 60 bpm
D. Resolution of ankle edema
Correct Answer: B
Rationale: Digoxin toxicity presents with GI symptoms (nausea, vomiting, anorexia),
neurological symptoms (confusion, visual disturbances including yellow-green halos),
and cardiac arrhythmias. Therapeutic range is 0.5-0.9 ng/mL (some sources up to
1.2). Level of 3.2 is toxic. Hypokalemia increases toxicity risk.
Q7: A nurse is teaching a patient about medication reconciliation. Which statement
by the patient indicates understanding?
, A. "I only need to tell you about my prescription medications"
B. "I should include prescription, OTC, supplements, and herbal products" [CORRECT]
C. "My previous hospital records are sufficient"
D. "I don't need to mention vitamins since they're natural"
Correct Answer: B
Rationale: Medication reconciliation requires a complete list of all substances:
prescription medications, over-the-counter drugs, dietary supplements, vitamins, and
herbal products. These can all interact with prescribed medications. "Natural" does
not mean safe or free from interactions.
Q8: A patient is prescribed a drug with low therapeutic index. Which nursing
implication is priority?
A. Less frequent monitoring is needed
B. Frequent therapeutic drug monitoring and careful titration are required [CORRECT]
C. The drug is safe for self-administration
D. No lab monitoring is necessary
Correct Answer: B
Rationale: Drugs with low therapeutic index (digoxin, lithium, warfarin,
aminoglycosides) have a narrow margin between therapeutic and toxic doses. These
require frequent monitoring of drug levels, clinical response, and adverse effects.
High therapeutic index drugs have wider safety margins.
Q9: A nurse is reviewing a medication order that reads "Digoxin 0.25 mg daily." The
patient's current dose is 0.125 mg. What is the appropriate action?
A. Administer 0.25 mg as ordered
B. Clarify the order with the provider before administration [CORRECT]
C. Give 0.125 mg and document the discrepancy
D. Hold the dose and wait for the next shift
ANSWERS | HS MISC | ECPI University Newport
News | Verified Q&A | Pass Guaranteed - A+
Graded
Pharmacological Foundations & Medication Safety
Q1: A patient is prescribed a medication with a half-life of 6 hours. Approximately
how long will it take for the drug to reach steady-state concentration with regular
dosing?
A. 6 hours
B. 12 hours
C. 24-30 hours [CORRECT]
D. 48 hours
Correct Answer: C
Rationale: Steady-state concentration is typically reached after 4-5 half-lives. With a
6-hour half-life, this would be 24-30 hours. This principle is important for
determining when therapeutic effects will be consistent and when to assess for
efficacy or toxicity.
Q2: A nurse is administering a high-alert medication. Which safety practice is
required?
A. Single nurse verification is sufficient
B. Independent double-check by two nurses [CORRECT]
C. Pharmacy verification only
D. Patient self-administration
Correct Answer: B
Rationale: High-alert medications (insulin, anticoagulants, chemotherapy, opioids)
,require independent double-check by two nurses to prevent errors. This means both
nurses calculate separately and compare results without influencing each other.
Single verification is insufficient for these high-risk drugs.
Q3: A patient is taking warfarin. Which laboratory value indicates therapeutic
anticoagulation for atrial fibrillation?
A. INR 0.8
B. INR 1.5
C. INR 2.0-3.0 [CORRECT]
D. INR 4.5
Correct Answer: C
Rationale: For atrial fibrillation and most indications, warfarin therapeutic range is
INR 2.0-3.0. Below 2.0 increases thrombosis risk; above 3.0 increases bleeding risk.
INR 4.5 indicates supratherapeutic levels requiring vitamin K and holding doses.
Mechanical valves require higher targets (2.5-3.5).
Q4: A nurse discovers a medication error after administration. What is the priority
action?
A. Document the error in the patient's chart only
B. Notify the provider, assess the patient, and complete the incident report
[CORRECT]
C. Wait to see if the patient develops symptoms
D. Ask the pharmacy to change the order
Correct Answer: B
Rationale: When a medication error occurs, the nurse must first assess the patient
for adverse effects, notify the provider for orders, and complete an incident report.
Incident reports are for quality improvement and should not be referenced in the
medical record. Delaying assessment risks patient harm.
,Q5: A patient is prescribed a drug that is an agonist at beta-2 receptors. Which effect
would the nurse expect?
A. Bronchoconstriction and decreased heart rate
B. Bronchodilation and potential tremors [CORRECT]
C. Increased blood pressure and bradycardia
D. Decreased gastric motility and urinary retention
Correct Answer: B
Rationale: Beta-2 agonists (albuterol, salmeterol) cause bronchodilation (primary
therapeutic effect) and may cause tremors as a side effect due to beta-2 receptor
stimulation in skeletal muscle. Beta-1 receptors are primarily cardiac; beta-2 are
primarily pulmonary and vascular.
Q6: A patient has a serum digoxin level of 3.2 ng/mL. Which finding indicates digoxin
toxicity?
A. Improved exercise tolerance
B. Nausea, vomiting, and yellow-green visual halos [CORRECT]
C. Decreased heart rate to 60 bpm
D. Resolution of ankle edema
Correct Answer: B
Rationale: Digoxin toxicity presents with GI symptoms (nausea, vomiting, anorexia),
neurological symptoms (confusion, visual disturbances including yellow-green halos),
and cardiac arrhythmias. Therapeutic range is 0.5-0.9 ng/mL (some sources up to
1.2). Level of 3.2 is toxic. Hypokalemia increases toxicity risk.
Q7: A nurse is teaching a patient about medication reconciliation. Which statement
by the patient indicates understanding?
, A. "I only need to tell you about my prescription medications"
B. "I should include prescription, OTC, supplements, and herbal products" [CORRECT]
C. "My previous hospital records are sufficient"
D. "I don't need to mention vitamins since they're natural"
Correct Answer: B
Rationale: Medication reconciliation requires a complete list of all substances:
prescription medications, over-the-counter drugs, dietary supplements, vitamins, and
herbal products. These can all interact with prescribed medications. "Natural" does
not mean safe or free from interactions.
Q8: A patient is prescribed a drug with low therapeutic index. Which nursing
implication is priority?
A. Less frequent monitoring is needed
B. Frequent therapeutic drug monitoring and careful titration are required [CORRECT]
C. The drug is safe for self-administration
D. No lab monitoring is necessary
Correct Answer: B
Rationale: Drugs with low therapeutic index (digoxin, lithium, warfarin,
aminoglycosides) have a narrow margin between therapeutic and toxic doses. These
require frequent monitoring of drug levels, clinical response, and adverse effects.
High therapeutic index drugs have wider safety margins.
Q9: A nurse is reviewing a medication order that reads "Digoxin 0.25 mg daily." The
patient's current dose is 0.125 mg. What is the appropriate action?
A. Administer 0.25 mg as ordered
B. Clarify the order with the provider before administration [CORRECT]
C. Give 0.125 mg and document the discrepancy
D. Hold the dose and wait for the next shift
