ATI PHARMACOLOGY CMS PROCTORED/FORM A,B,C CMS
PHARMACOLOGY PROCTORED REAL Questions and
Answers/Plus a Rationale Updated 2026 A+/Instant Download PDF
GRADED 100%
EXAM COVERAGE - 1. Pharmacological Principles and Safe
Medication Administration - 2. Medications Affecting the Nervous
System - 3. Medications Affecting the Cardiovascular and
Hematologic Systems - 4. Medications Affecting the Respiratory,
Gastrointestinal, and Renal Systems - 5. Medications Affecting the
Endocrine, Immune, and Reproductive Systems
1. A nurse is caring for a client who is prescribed intravenous heparin therapy for the treatment of
deep-vein thrombosis. Which of the following laboratory values should the nurse monitor to
evaluate the therapeutic efficacy of this medication?
A. Prothrombin time (PT)
B. International Normalized Ratio (INR)
C. Activated partial thromboplastin time (aPTT)
D. Platelet count
CORRECT ANSWER : C
Rationale: Activated partial thromboplastin time (aPTT) is used to monitor the therapeutic
efficacy of unfractionated heparin therapy, with a target range typically 1.5 to 2 times the
baseline value. PT and INR are utilized to monitor the effectiveness of oral anticoagulants such
as warfarin. Platelet counts are monitored to detect heparin-induced thrombocytopenia (HIT),
but they do not measure the anticoagulant efficacy of heparin.
2. A nurse is administering digoxin to a client with heart failure. Prior to administration, which of
the following assessments is most critical for the nurse to perform?
A. Assessing the client's peripheral edema
B. Apically auscultating the heart rate for one full minute
C. Measuring the client's abdominal girth
D. Checking the client's most recent serum creatinine level
, CORRECT ANSWER : B
Rationale: The nurse must apically auscultate the pulse for a full minute prior to administering
digoxin, withholding the dose and notifying the provider if the rate is below 60/min in adults.
Peripheral edema and abdominal girth measure fluid volume status rather than direct cardiac
drug safety. Serum creatinine assesses renal clearance, which is important for excretion, but the
immediate safety check is the apical heart rate.
3. A nurse is providing discharge instructions to a client prescribed warfarin. Which of the
following dietary instructions should the nurse include?
A. "Eliminate all green leafy vegetables from your diet completely."
B. "Increase your daily intake of foods high in vitamin K."
C. "Maintain a consistent, stable intake of foods containing vitamin K."
D. "Avoid citrus fruits and juices while taking this medication."
CORRECT ANSWER : C
Rationale: Vitamin K antagonizes the effects of warfarin; therefore, clients should maintain a
consistent and stable intake of vitamin K-rich foods rather than fluctuating or eliminating them
entirely. Complete elimination or erratic consumption can destabilize the INR and lead to
therapeutic failure or hemorrhage. Citrus fruits do not have a clinically significant interaction
with warfarin.
4. A nurse is caring for a client who has received an overdose of intravenous heparin. Which of the
following medications should the nurse anticipate administering as a specific antidote?
A. Vitamin K
B. Protamine sulfate
C. Flumazenil
D. Naloxone hydrochloride
CORRECT ANSWER : B
Rationale: Protamine sulfate is the specific pharmacological antagonist and antidote for
heparin, neutralizing its anticoagulant effects rapidly. Vitamin K is the reversal agent for
warfarin. Flumazenil reverses benzodiazepines, and naloxone reverses opioid narcotics.
,5. A nurse is monitoring a client receiving furosemide intravenously for acute pulmonary edema.
Which of the following findings indicates an adverse effect that requires immediate nursing
intervention?
A. Blood pressure of 130/80 mm Hg
B. Serum potassium level of 3.2 mEq/L
C. Urine output of 25 mL/hr over 2 consecutive hours
D. Mild complaints of dry mouth and thirst
CORRECT ANSWER : C
Rationale: A urine output of less than 30 mL/hr over 2 hours indicates potential renal
hypoperfusion or acute kidney injury, requiring immediate provider notification. A potassium
level of 3.2 mEq/L is low and requires correction, but oliguria signals an urgent systemic
compromise. Blood pressure of 130/80 mm Hg is stable, and mild thirst is an expected
consequence of diuresis.
6. A nurse is administering regular insulin subcutaneously to a client who has type 1 diabetes
mellitus. At what time frame should the nurse expect the onset of action for regular insulin?
A. 10 to 15 minutes
B. 30 to 60 minutes
C. 1 to 2 hours
D. 6 to 14 hours
CORRECT ANSWER : B
Rationale: Regular insulin is a short-acting insulin with an onset of action between 30 and 60
minutes, making it critical to coordinate administration with meals. Rapid-acting insulins (such
as lispro) have an onset of 10 to 15 minutes. Intermediate-acting insulins (such as NPH) have an
onset of 1 to 2 hours, and long-acting insulins (such as glargine) have an onset around 6 hours.
7. A nurse is preparing to administer gentamicin IV to a client with a severe systemic infection.
Which of the following baseline laboratory values should the nurse review to assess for potential
organ toxicity?
A. Serum amylase and lipase
B. Blood urea nitrogen (BUN) and serum creatinine
, C. Erythrocyte sedimentation rate (ESR)
D. Fasting blood glucose
CORRECT ANSWER : B
Rationale: Aminoglycosides like gentamicin are nephrotoxic and ototoxic; therefore, monitoring
BUN and serum creatinine is essential to evaluate renal function and adjust dosages. Serum
amylase and lipase evaluate pancreatic function. ESR measures systemic inflammation, and
blood glucose assesses glycemic control.
8. A nurse is assessing a client taking levothyroxine for hypothyroidism. Which of the following
findings indicates that the medication dosage is too high?
A. Bradycardia and lethargy
B. Tachycardia and heat intolerance
C. Weight gain and constipation
D. Dry, puffy skin and cold intolerance
CORRECT ANSWER : B
Rationale: Tachycardia, palpitations, heat intolerance, weight loss, and insomnia are clinical
manifestations of hyperthyroidism, indicating that the levothyroxine dose is excessive.
Bradycardia, lethargy, weight gain, constipation, and cold intolerance indicate untreated
hypothyroidism or an inadequate dosage.
9. A nurse is administering spironolactone to a client with cirrhosis and ascites. Which of the
following laboratory values should the nurse monitor closely?
A. Serum sodium
B. Serum potassium
C. Serum chloride
D. Serum calcium
CORRECT ANSWER : B
Rationale: Spironolactone is a potassium-sparing diuretic that inhibits aldosterone, placing the
client at significant risk for hyperkalemia. While sodium and chloride are affected by fluid shifts,
monitoring potassium is the priority safety measure due to the risk of lethal cardiac
dysrhythmias.
PHARMACOLOGY PROCTORED REAL Questions and
Answers/Plus a Rationale Updated 2026 A+/Instant Download PDF
GRADED 100%
EXAM COVERAGE - 1. Pharmacological Principles and Safe
Medication Administration - 2. Medications Affecting the Nervous
System - 3. Medications Affecting the Cardiovascular and
Hematologic Systems - 4. Medications Affecting the Respiratory,
Gastrointestinal, and Renal Systems - 5. Medications Affecting the
Endocrine, Immune, and Reproductive Systems
1. A nurse is caring for a client who is prescribed intravenous heparin therapy for the treatment of
deep-vein thrombosis. Which of the following laboratory values should the nurse monitor to
evaluate the therapeutic efficacy of this medication?
A. Prothrombin time (PT)
B. International Normalized Ratio (INR)
C. Activated partial thromboplastin time (aPTT)
D. Platelet count
CORRECT ANSWER : C
Rationale: Activated partial thromboplastin time (aPTT) is used to monitor the therapeutic
efficacy of unfractionated heparin therapy, with a target range typically 1.5 to 2 times the
baseline value. PT and INR are utilized to monitor the effectiveness of oral anticoagulants such
as warfarin. Platelet counts are monitored to detect heparin-induced thrombocytopenia (HIT),
but they do not measure the anticoagulant efficacy of heparin.
2. A nurse is administering digoxin to a client with heart failure. Prior to administration, which of
the following assessments is most critical for the nurse to perform?
A. Assessing the client's peripheral edema
B. Apically auscultating the heart rate for one full minute
C. Measuring the client's abdominal girth
D. Checking the client's most recent serum creatinine level
, CORRECT ANSWER : B
Rationale: The nurse must apically auscultate the pulse for a full minute prior to administering
digoxin, withholding the dose and notifying the provider if the rate is below 60/min in adults.
Peripheral edema and abdominal girth measure fluid volume status rather than direct cardiac
drug safety. Serum creatinine assesses renal clearance, which is important for excretion, but the
immediate safety check is the apical heart rate.
3. A nurse is providing discharge instructions to a client prescribed warfarin. Which of the
following dietary instructions should the nurse include?
A. "Eliminate all green leafy vegetables from your diet completely."
B. "Increase your daily intake of foods high in vitamin K."
C. "Maintain a consistent, stable intake of foods containing vitamin K."
D. "Avoid citrus fruits and juices while taking this medication."
CORRECT ANSWER : C
Rationale: Vitamin K antagonizes the effects of warfarin; therefore, clients should maintain a
consistent and stable intake of vitamin K-rich foods rather than fluctuating or eliminating them
entirely. Complete elimination or erratic consumption can destabilize the INR and lead to
therapeutic failure or hemorrhage. Citrus fruits do not have a clinically significant interaction
with warfarin.
4. A nurse is caring for a client who has received an overdose of intravenous heparin. Which of the
following medications should the nurse anticipate administering as a specific antidote?
A. Vitamin K
B. Protamine sulfate
C. Flumazenil
D. Naloxone hydrochloride
CORRECT ANSWER : B
Rationale: Protamine sulfate is the specific pharmacological antagonist and antidote for
heparin, neutralizing its anticoagulant effects rapidly. Vitamin K is the reversal agent for
warfarin. Flumazenil reverses benzodiazepines, and naloxone reverses opioid narcotics.
,5. A nurse is monitoring a client receiving furosemide intravenously for acute pulmonary edema.
Which of the following findings indicates an adverse effect that requires immediate nursing
intervention?
A. Blood pressure of 130/80 mm Hg
B. Serum potassium level of 3.2 mEq/L
C. Urine output of 25 mL/hr over 2 consecutive hours
D. Mild complaints of dry mouth and thirst
CORRECT ANSWER : C
Rationale: A urine output of less than 30 mL/hr over 2 hours indicates potential renal
hypoperfusion or acute kidney injury, requiring immediate provider notification. A potassium
level of 3.2 mEq/L is low and requires correction, but oliguria signals an urgent systemic
compromise. Blood pressure of 130/80 mm Hg is stable, and mild thirst is an expected
consequence of diuresis.
6. A nurse is administering regular insulin subcutaneously to a client who has type 1 diabetes
mellitus. At what time frame should the nurse expect the onset of action for regular insulin?
A. 10 to 15 minutes
B. 30 to 60 minutes
C. 1 to 2 hours
D. 6 to 14 hours
CORRECT ANSWER : B
Rationale: Regular insulin is a short-acting insulin with an onset of action between 30 and 60
minutes, making it critical to coordinate administration with meals. Rapid-acting insulins (such
as lispro) have an onset of 10 to 15 minutes. Intermediate-acting insulins (such as NPH) have an
onset of 1 to 2 hours, and long-acting insulins (such as glargine) have an onset around 6 hours.
7. A nurse is preparing to administer gentamicin IV to a client with a severe systemic infection.
Which of the following baseline laboratory values should the nurse review to assess for potential
organ toxicity?
A. Serum amylase and lipase
B. Blood urea nitrogen (BUN) and serum creatinine
, C. Erythrocyte sedimentation rate (ESR)
D. Fasting blood glucose
CORRECT ANSWER : B
Rationale: Aminoglycosides like gentamicin are nephrotoxic and ototoxic; therefore, monitoring
BUN and serum creatinine is essential to evaluate renal function and adjust dosages. Serum
amylase and lipase evaluate pancreatic function. ESR measures systemic inflammation, and
blood glucose assesses glycemic control.
8. A nurse is assessing a client taking levothyroxine for hypothyroidism. Which of the following
findings indicates that the medication dosage is too high?
A. Bradycardia and lethargy
B. Tachycardia and heat intolerance
C. Weight gain and constipation
D. Dry, puffy skin and cold intolerance
CORRECT ANSWER : B
Rationale: Tachycardia, palpitations, heat intolerance, weight loss, and insomnia are clinical
manifestations of hyperthyroidism, indicating that the levothyroxine dose is excessive.
Bradycardia, lethargy, weight gain, constipation, and cold intolerance indicate untreated
hypothyroidism or an inadequate dosage.
9. A nurse is administering spironolactone to a client with cirrhosis and ascites. Which of the
following laboratory values should the nurse monitor closely?
A. Serum sodium
B. Serum potassium
C. Serum chloride
D. Serum calcium
CORRECT ANSWER : B
Rationale: Spironolactone is a potassium-sparing diuretic that inhibits aldosterone, placing the
client at significant risk for hyperkalemia. While sodium and chloride are affected by fluid shifts,
monitoring potassium is the priority safety measure due to the risk of lethal cardiac
dysrhythmias.
