BSN HESI 315 Pharmacology Exam V1 - 2026/2027 Actual
Questions with Revised Answers, 100% Verified - Nightingale
College - 200 Questions and Answers Already Graded A+
Premium Exam Tested And Verified
Subject Area Pharmacology for Nursing
Description This examination assesses advanced understanding of pharmacological principles,
drug classifications, mechanisms of action, adverse effects, nursing
considerations, and evidence-based pharmacotherapy across diverse body
systems. It integrates pathophysiology, pharmacokinetics, pharmacodynamics,
and patient safety standards for clinical decision-making.
Expected Grade A+
Total Questions 200
Duration 3 hours
Learning Outcomes 1. Apply pharmacotherapeutic principles to manage complex patient scenarios.
2. Analyze drug interactions, contraindications, and adverse effects to ensure safe
medication administration.
3. Evaluate nursing interventions and monitoring parameters for high-alert
medications.
4. Synthesize knowledge of drug classes to recommend appropriate
pharmacotherapy.
Accreditation This examination adheres to the standards of the American Association of
Colleges of Nursing (AACN) and the National Council of State Boards of Nursing
(NCSBN) for baccalaureate nursing education.
Page 1
,1. A patient receiving a continuous infusion of heparin develops a sudden drop in
platelet count from 250,000 to 50,000/mm³. Which intervention is most appropriate?
A. Administer protamine sulfate immediately.
B. Discontinue heparin and start argatroban.
C. Increase the heparin infusion rate.
D. Obtain aPTT and adjust heparin per protocol.
Answer: B. Discontinue heparin and start argatroban.
This presentation suggests heparin-induced thrombocytopenia (HIT), a life-threatening
immune reaction. Heparin must be stopped and a direct thrombin inhibitor (e.g.,
argatroban) initiated. Protamine reverses heparin but not HIT; increasing heparin
worsens thrombosis. aPTT monitoring is insufficient for HIT management.
2. A patient on long-term phenytoin therapy has a serum albumin of 2.5 g/dL
(normal 3.5-5.0). The measured total phenytoin concentration is 10 mcg/mL
(therapeutic 10-20). What is the most accurate assessment of the free phenytoin
level?
A. Free level is likely subtherapeutic.
B. Free level is likely supratherapeutic.
C. Free level is likely therapeutic.
D. Free level cannot be estimated from these data.
Answer: B. Free level is likely supratherapeutic.
Phenytoin is highly protein-bound (90%). Hypoalbuminemia reduces binding,
increasing the free (active) fraction. With low albumin, a total level of 10 mcg/mL
corresponds to a higher free level, potentially supratherapeutic. The Sheiner-Tozer
equation estimates corrected concentration: measured / [(0.2 × albumin) + 0.1] = 10 /
[(0.2×2.5)+0.1] = 10/0.6 16.7, but free fraction is increased; clinical toxicity risk is high.
Page 2
,3. Which of the following best explains the mechanism by which sulfonylureas can
cause severe hypoglycemia in patients with renal impairment?
A. Increased sensitivity of pancreatic beta cells to glucose.
B. Accumulation of active metabolites due to reduced renal clearance.
C. Decreased hepatic gluconeogenesis independent of insulin.
D. Enhanced peripheral glucose uptake via GLUT4 translocation.
Answer: B. Accumulation of active metabolites due to reduced renal clearance.
Many sulfonylureas (e.g., glyburide) have active metabolites excreted renally. In renal
impairment, these metabolites accumulate, prolonging insulin release and causing
refractory hypoglycemia. Options A and D are mechanisms of action but not specific to
renal failure; C is not a primary sulfonylurea effect.
4. A patient receiving IV vancomycin develops red man syndrome. Which
intervention should the nurse implement first?
A. Administer diphenhydramine and slow the infusion rate.
B. Stop the infusion and administer an antihistamine.
C. Flush the line with normal saline and increase the infusion rate.
D. Obtain a serum vancomycin trough level.
Answer: B. Stop the infusion and administer an antihistamine.
Red man syndrome is an infusion-related reaction due to histamine release. The
immediate priority is to stop the infusion to prevent progression. After stopping, an
antihistamine (e.g., diphenhydramine) can be given, and the infusion can be restarted at
a slower rate. Slowing without stopping (A) is insufficient; increasing rate (C) worsens
reaction; trough (D) is irrelevant.
5. A patient with heart failure is prescribed metoprolol succinate. Which finding
would indicate the need for dosage adjustment or discontinuation?
A. Heart rate of 58 beats per minute.
B. Weight gain of 2 kg over 2 days.
C. Blood pressure of 110/70 mm Hg.
D. Serum potassium of 4.0 mEq/L.
Answer: B. Weight gain of 2 kg over 2 days.
Beta-blockers can initially worsen heart failure due to negative inotropic effects. Weight
gain indicates fluid retention, a sign of worsening failure, requiring dose adjustment or
holding. A heart rate of 58 is acceptable; BP 110/70 is adequate; potassium is normal.
Page 3
, 6. A patient on lithium therapy has a serum level of 1.8 mEq/L (therapeutic 0.6-1.2).
Which electrocardiogram change is most likely to be associated with this level?
A. Prolonged QT interval.
B. Peaked T waves.
C. U waves and T wave inversions.
D. ST segment elevation.
Answer: C. U waves and T wave inversions.
Lithium toxicity (levels >1.5) commonly causes ECG changes including T wave
inversion, U waves, and sometimes sinus node dysfunction. Prolonged QT is more
typical of antipsychotics; peaked T waves suggest hyperkalemia; ST elevation indicates
ischemia.
7. A patient with severe hypertension is started on nitroprusside infusion. Which
parameter requires continuous monitoring to prevent toxicity?
A. Serum lactate levels.
B. Cyanide and thiocyanate levels.
C. Serum creatinine and BUN.
D. Magnesium and phosphate levels.
Answer: B. Cyanide and thiocyanate levels.
Nitroprusside is metabolized to cyanide, which is further converted to thiocyanate.
Cyanide toxicity (metabolic acidosis, altered mental status) and thiocyanate toxicity
(psychosis, hypothyroidism) can occur, especially with prolonged infusion or renal
impairment. Lactate may rise in cyanide toxicity but is less specific; renal function
monitoring is important for thiocyanate clearance but not the primary toxicity
parameter.
Page 4
Questions with Revised Answers, 100% Verified - Nightingale
College - 200 Questions and Answers Already Graded A+
Premium Exam Tested And Verified
Subject Area Pharmacology for Nursing
Description This examination assesses advanced understanding of pharmacological principles,
drug classifications, mechanisms of action, adverse effects, nursing
considerations, and evidence-based pharmacotherapy across diverse body
systems. It integrates pathophysiology, pharmacokinetics, pharmacodynamics,
and patient safety standards for clinical decision-making.
Expected Grade A+
Total Questions 200
Duration 3 hours
Learning Outcomes 1. Apply pharmacotherapeutic principles to manage complex patient scenarios.
2. Analyze drug interactions, contraindications, and adverse effects to ensure safe
medication administration.
3. Evaluate nursing interventions and monitoring parameters for high-alert
medications.
4. Synthesize knowledge of drug classes to recommend appropriate
pharmacotherapy.
Accreditation This examination adheres to the standards of the American Association of
Colleges of Nursing (AACN) and the National Council of State Boards of Nursing
(NCSBN) for baccalaureate nursing education.
Page 1
,1. A patient receiving a continuous infusion of heparin develops a sudden drop in
platelet count from 250,000 to 50,000/mm³. Which intervention is most appropriate?
A. Administer protamine sulfate immediately.
B. Discontinue heparin and start argatroban.
C. Increase the heparin infusion rate.
D. Obtain aPTT and adjust heparin per protocol.
Answer: B. Discontinue heparin and start argatroban.
This presentation suggests heparin-induced thrombocytopenia (HIT), a life-threatening
immune reaction. Heparin must be stopped and a direct thrombin inhibitor (e.g.,
argatroban) initiated. Protamine reverses heparin but not HIT; increasing heparin
worsens thrombosis. aPTT monitoring is insufficient for HIT management.
2. A patient on long-term phenytoin therapy has a serum albumin of 2.5 g/dL
(normal 3.5-5.0). The measured total phenytoin concentration is 10 mcg/mL
(therapeutic 10-20). What is the most accurate assessment of the free phenytoin
level?
A. Free level is likely subtherapeutic.
B. Free level is likely supratherapeutic.
C. Free level is likely therapeutic.
D. Free level cannot be estimated from these data.
Answer: B. Free level is likely supratherapeutic.
Phenytoin is highly protein-bound (90%). Hypoalbuminemia reduces binding,
increasing the free (active) fraction. With low albumin, a total level of 10 mcg/mL
corresponds to a higher free level, potentially supratherapeutic. The Sheiner-Tozer
equation estimates corrected concentration: measured / [(0.2 × albumin) + 0.1] = 10 /
[(0.2×2.5)+0.1] = 10/0.6 16.7, but free fraction is increased; clinical toxicity risk is high.
Page 2
,3. Which of the following best explains the mechanism by which sulfonylureas can
cause severe hypoglycemia in patients with renal impairment?
A. Increased sensitivity of pancreatic beta cells to glucose.
B. Accumulation of active metabolites due to reduced renal clearance.
C. Decreased hepatic gluconeogenesis independent of insulin.
D. Enhanced peripheral glucose uptake via GLUT4 translocation.
Answer: B. Accumulation of active metabolites due to reduced renal clearance.
Many sulfonylureas (e.g., glyburide) have active metabolites excreted renally. In renal
impairment, these metabolites accumulate, prolonging insulin release and causing
refractory hypoglycemia. Options A and D are mechanisms of action but not specific to
renal failure; C is not a primary sulfonylurea effect.
4. A patient receiving IV vancomycin develops red man syndrome. Which
intervention should the nurse implement first?
A. Administer diphenhydramine and slow the infusion rate.
B. Stop the infusion and administer an antihistamine.
C. Flush the line with normal saline and increase the infusion rate.
D. Obtain a serum vancomycin trough level.
Answer: B. Stop the infusion and administer an antihistamine.
Red man syndrome is an infusion-related reaction due to histamine release. The
immediate priority is to stop the infusion to prevent progression. After stopping, an
antihistamine (e.g., diphenhydramine) can be given, and the infusion can be restarted at
a slower rate. Slowing without stopping (A) is insufficient; increasing rate (C) worsens
reaction; trough (D) is irrelevant.
5. A patient with heart failure is prescribed metoprolol succinate. Which finding
would indicate the need for dosage adjustment or discontinuation?
A. Heart rate of 58 beats per minute.
B. Weight gain of 2 kg over 2 days.
C. Blood pressure of 110/70 mm Hg.
D. Serum potassium of 4.0 mEq/L.
Answer: B. Weight gain of 2 kg over 2 days.
Beta-blockers can initially worsen heart failure due to negative inotropic effects. Weight
gain indicates fluid retention, a sign of worsening failure, requiring dose adjustment or
holding. A heart rate of 58 is acceptable; BP 110/70 is adequate; potassium is normal.
Page 3
, 6. A patient on lithium therapy has a serum level of 1.8 mEq/L (therapeutic 0.6-1.2).
Which electrocardiogram change is most likely to be associated with this level?
A. Prolonged QT interval.
B. Peaked T waves.
C. U waves and T wave inversions.
D. ST segment elevation.
Answer: C. U waves and T wave inversions.
Lithium toxicity (levels >1.5) commonly causes ECG changes including T wave
inversion, U waves, and sometimes sinus node dysfunction. Prolonged QT is more
typical of antipsychotics; peaked T waves suggest hyperkalemia; ST elevation indicates
ischemia.
7. A patient with severe hypertension is started on nitroprusside infusion. Which
parameter requires continuous monitoring to prevent toxicity?
A. Serum lactate levels.
B. Cyanide and thiocyanate levels.
C. Serum creatinine and BUN.
D. Magnesium and phosphate levels.
Answer: B. Cyanide and thiocyanate levels.
Nitroprusside is metabolized to cyanide, which is further converted to thiocyanate.
Cyanide toxicity (metabolic acidosis, altered mental status) and thiocyanate toxicity
(psychosis, hypothyroidism) can occur, especially with prolonged infusion or renal
impairment. Lactate may rise in cyanide toxicity but is less specific; renal function
monitoring is important for thiocyanate clearance but not the primary toxicity
parameter.
Page 4
