NURS 5334 Final Exam V2 | NURS 5334
Advanced Pharmacology Guide | Actual
Q&A with Rationale (NURS5334 Final
Exam) | The University of Texas at
Arlington
1. A patient with chronic heart failure is prescribed Lisinopril. Which mechanism of action
correctly describes how this medication reduces blood pressure and cardiac workload?
A. It blocks the binding of Angiotensin II to its receptors in the vascular smooth muscle.
B. It directly relaxes peripheral vascular smooth muscle through calcium channel blockade.
C. It inhibits the conversion of Angiotensin I to the potent vasoconstrictor Angiotensin II.
D. It promotes sodium excretion by antagonizing aldosterone receptors in the distal tubule.
Answer: C
Rationale: Lisinopril is an ACE inhibitor that prevents the conversion of Angiotensin I to
Angiotensin II, which is a powerful vasoconstrictor. This reduction in Angiotensin II levels
leads to decreased systemic vascular resistance and lower blood pressure. Furthermore, it
reduces the secretion of aldosterone, helping to decrease fluid retention and cardiac
preload.
,2. A 65-year-old male is started on Warfarin for atrial fibrillation. Which of the following
laboratory values is most critical for the nurse practitioner to monitor to ensure therapeutic
efficacy and safety?
A. Activated Partial Thromboplastin Time (aPTT)
B. Serum Creatinine and Blood Urea Nitrogen (BUN)
C. International Normalized Ratio (INR)
D. Platelet count and Mean Corpuscular Volume (MCV)
Answer: C
Rationale: The INR is the standardized measurement used to monitor the effectiveness of
Warfarin therapy, with a typical target range of 2.0 to 3.0 for atrial fibrillation. The aPTT is
used primarily to monitor heparin therapy rather than oral anticoagulants like Warfarin.
Regular monitoring is essential to prevent both thromboembolic events and life-
threatening bleeding complications.
3. Which side effect is a common, dose-limiting toxicity associated with the use of HMG-CoA
reductase inhibitors (Statins)?
A. Myalgia and potential rhabdomyolysis
B. Dry, non-productive cough
C. Peripheral edema and weight gain
D. Hypokalemia and hyperuricemia
,Answer: A
Rationale: Statins are generally well-tolerated, but muscle-related adverse effects ranging
from mild myalgias to severe rhabdomyolysis are significant concerns. Clinicians should
monitor for muscle pain or weakness and check Creatine Kinase (CK) levels if symptoms
occur. Discontinuation is often necessary if symptoms are severe or if CK levels are
significantly elevated.
4. A patient with Type 2 Diabetes is prescribed Metformin. What is the primary black box
warning associated with this medication that the practitioner must be aware of?
A. Severe hypoglycemia when used as monotherapy
B. Lactic acidosis, especially in patients with renal impairment
C. Increased risk of bladder cancer
D. Acute pancreatitis and GI obstruction
Answer: B
Rationale: Metformin carries a black box warning for lactic acidosis, a rare but potentially
fatal metabolic complication. The risk increases with conditions such as renal insufficiency,
hypoxia, and sepsis. Therefore, renal function must be assessed via eGFR prior to initiation
and monitored at least annually thereafter.
5. Which of the following describes the mechanism of action of Albuterol, a Short-Acting
Beta-Agonist (SABA)?
A. Antagonism of muscarinic receptors leading to decreased mucus production.
, B. Stimulation of Beta-2 adrenergic receptors in the lungs, causing bronchodilation.
C. Inhibition of leukotriene synthesis to reduce airway inflammation.
D. Stabilization of mast cell membranes to prevent histamine release.
Answer: B
Rationale: Albuterol works by selectively stimulating Beta-2 adrenergic receptors in the
bronchial smooth muscle, which activates adenyl cyclase and increases cAMP levels. This
process leads to rapid smooth muscle relaxation and bronchodilation, making it an ideal
rescue medication for acute asthma symptoms. It does not address the underlying
inflammatory component of asthma, which requires corticosteroids.
6. A patient is prescribed Amiodarone for refractory ventricular arrhythmias. Which
monitoring parameter is specific to this drug due to its risk for organ toxicity?
A. Daily weights for heart failure exacerbation
B. Bone density scans for osteoporosis
C. Serum potassium levels every 2 weeks
D. Pulmonary function tests and chest X-rays
Answer: D
Rationale: Amiodarone is associated with serious pulmonary toxicity, including interstitial
pneumonitis and pulmonary fibrosis. Baseline and periodic pulmonary function tests
Advanced Pharmacology Guide | Actual
Q&A with Rationale (NURS5334 Final
Exam) | The University of Texas at
Arlington
1. A patient with chronic heart failure is prescribed Lisinopril. Which mechanism of action
correctly describes how this medication reduces blood pressure and cardiac workload?
A. It blocks the binding of Angiotensin II to its receptors in the vascular smooth muscle.
B. It directly relaxes peripheral vascular smooth muscle through calcium channel blockade.
C. It inhibits the conversion of Angiotensin I to the potent vasoconstrictor Angiotensin II.
D. It promotes sodium excretion by antagonizing aldosterone receptors in the distal tubule.
Answer: C
Rationale: Lisinopril is an ACE inhibitor that prevents the conversion of Angiotensin I to
Angiotensin II, which is a powerful vasoconstrictor. This reduction in Angiotensin II levels
leads to decreased systemic vascular resistance and lower blood pressure. Furthermore, it
reduces the secretion of aldosterone, helping to decrease fluid retention and cardiac
preload.
,2. A 65-year-old male is started on Warfarin for atrial fibrillation. Which of the following
laboratory values is most critical for the nurse practitioner to monitor to ensure therapeutic
efficacy and safety?
A. Activated Partial Thromboplastin Time (aPTT)
B. Serum Creatinine and Blood Urea Nitrogen (BUN)
C. International Normalized Ratio (INR)
D. Platelet count and Mean Corpuscular Volume (MCV)
Answer: C
Rationale: The INR is the standardized measurement used to monitor the effectiveness of
Warfarin therapy, with a typical target range of 2.0 to 3.0 for atrial fibrillation. The aPTT is
used primarily to monitor heparin therapy rather than oral anticoagulants like Warfarin.
Regular monitoring is essential to prevent both thromboembolic events and life-
threatening bleeding complications.
3. Which side effect is a common, dose-limiting toxicity associated with the use of HMG-CoA
reductase inhibitors (Statins)?
A. Myalgia and potential rhabdomyolysis
B. Dry, non-productive cough
C. Peripheral edema and weight gain
D. Hypokalemia and hyperuricemia
,Answer: A
Rationale: Statins are generally well-tolerated, but muscle-related adverse effects ranging
from mild myalgias to severe rhabdomyolysis are significant concerns. Clinicians should
monitor for muscle pain or weakness and check Creatine Kinase (CK) levels if symptoms
occur. Discontinuation is often necessary if symptoms are severe or if CK levels are
significantly elevated.
4. A patient with Type 2 Diabetes is prescribed Metformin. What is the primary black box
warning associated with this medication that the practitioner must be aware of?
A. Severe hypoglycemia when used as monotherapy
B. Lactic acidosis, especially in patients with renal impairment
C. Increased risk of bladder cancer
D. Acute pancreatitis and GI obstruction
Answer: B
Rationale: Metformin carries a black box warning for lactic acidosis, a rare but potentially
fatal metabolic complication. The risk increases with conditions such as renal insufficiency,
hypoxia, and sepsis. Therefore, renal function must be assessed via eGFR prior to initiation
and monitored at least annually thereafter.
5. Which of the following describes the mechanism of action of Albuterol, a Short-Acting
Beta-Agonist (SABA)?
A. Antagonism of muscarinic receptors leading to decreased mucus production.
, B. Stimulation of Beta-2 adrenergic receptors in the lungs, causing bronchodilation.
C. Inhibition of leukotriene synthesis to reduce airway inflammation.
D. Stabilization of mast cell membranes to prevent histamine release.
Answer: B
Rationale: Albuterol works by selectively stimulating Beta-2 adrenergic receptors in the
bronchial smooth muscle, which activates adenyl cyclase and increases cAMP levels. This
process leads to rapid smooth muscle relaxation and bronchodilation, making it an ideal
rescue medication for acute asthma symptoms. It does not address the underlying
inflammatory component of asthma, which requires corticosteroids.
6. A patient is prescribed Amiodarone for refractory ventricular arrhythmias. Which
monitoring parameter is specific to this drug due to its risk for organ toxicity?
A. Daily weights for heart failure exacerbation
B. Bone density scans for osteoporosis
C. Serum potassium levels every 2 weeks
D. Pulmonary function tests and chest X-rays
Answer: D
Rationale: Amiodarone is associated with serious pulmonary toxicity, including interstitial
pneumonitis and pulmonary fibrosis. Baseline and periodic pulmonary function tests
