NR565 | NR565 Advanced Pharmacology
Fundamentals Exam 4 v1 | Questions with Correct
Answers and Expert Explanation for Each Question
| Chamberlain
1. A patient is started on Fluoxetine (Prozac) for Depression. How long should the
nurse practitioner advise the patient it might take to see full therapeutic effects?
A. 1 to 2 days
B. 4 to 6 weeks
C. 1 week
D. 3 months
Correct Answer: B
Expert Explanation: Selective serotonin reuptake inhibitors (SSRIs) like fluoxetine
require several weeks to achieve a steady state and modify neurotransmitter
receptors. Patients often experience side effects early in treatment, while the mood-
elevating effects lag behind. It is critical to manage patient expectations to improve
adherence during the initial phase of therapy.
2. Which of the following is a significant side effect of Venlafaxine (Effexor) that
requires regular monitoring?
A. Hypertension
,B. Hypotension
C. Bradycardia
D. Hypoglycemia
Correct Answer: A
Expert Explanation: Venlafaxine is a serotonin-norepinephrine reuptake inhibitor
(SNRI) that can cause dose-dependent increases in blood pressure. This effect is
primarily due to the increased levels of norepinephrine in the systemic circulation.
Providers should establish a baseline blood pressure and monitor it regularly
throughout treatment.
3. A patient taking Lithium for Bipolar Disorder presents with coarse tremors,
confusion, and ataxia. What is the most likely cause?
A. Therapeutic effect of the drug
B. Lithium toxicity
C. Extrapyramidal symptoms
D. Serotonin syndrome
Correct Answer: B
Expert Explanation: Lithium has a very narrow therapeutic index, typically
between 0.6 and 1.2 mEq/L. Coarse tremors, ataxia, and mental confusion are classic
,signs of moderate to severe lithium toxicity. Immediate serum lithium levels should
be obtained, and the medication should be held if toxicity is suspected.
4. Which medication is considered the gold standard for the treatment of Bipolar
Disorder but requires monitoring of renal and thyroid function?
A. Lithium
B. Quetiapine
C. Valproate
D. Lamotrigine
Correct Answer: A
Expert Explanation: Lithium is highly effective for stabilizing mood but is excreted
exclusively by the kidneys and can interfere with iodine uptake in the thyroid. Long-
term use is associated with potential nephrotoxicity and hypothyroidism. Therefore,
periodic monitoring of BUN, creatinine, and TSH is a standard of care for these
patients.
5. What is the primary mechanism of action of first-generation (typical) antipsychotics
like Haloperidol?
A. Serotonin 5-HT2A receptor antagonism
B. Norepinephrine reuptake inhibition
, C. GABA-A receptor agonism
D. Dopamine D2 receptor antagonism
Correct Answer: D
Expert Explanation: Typical antipsychotics work by blocking dopamine D2
receptors in the mesolimbic pathway of the brain. While this effectively reduces
positive symptoms of schizophrenia, it also causes significant side effects in the
nigrostriatal pathway. These side effects commonly manifest as extrapyramidal
symptoms (EPS).
6. A patient on Clozapine (Clozaril) must have which laboratory value monitored
weekly for the first 6 months?
A. Absolute Neutrophil Count (ANC)
B. Liver function tests
C. Serum glucose
D. Serum potassium
Correct Answer: A
Expert Explanation: Clozapine is associated with a risk of life-threatening
agranulocytosis, necessitating strict hematologic monitoring. The Absolute
Neutrophil Count (ANC) must be checked weekly initially to ensure it stays within a
Fundamentals Exam 4 v1 | Questions with Correct
Answers and Expert Explanation for Each Question
| Chamberlain
1. A patient is started on Fluoxetine (Prozac) for Depression. How long should the
nurse practitioner advise the patient it might take to see full therapeutic effects?
A. 1 to 2 days
B. 4 to 6 weeks
C. 1 week
D. 3 months
Correct Answer: B
Expert Explanation: Selective serotonin reuptake inhibitors (SSRIs) like fluoxetine
require several weeks to achieve a steady state and modify neurotransmitter
receptors. Patients often experience side effects early in treatment, while the mood-
elevating effects lag behind. It is critical to manage patient expectations to improve
adherence during the initial phase of therapy.
2. Which of the following is a significant side effect of Venlafaxine (Effexor) that
requires regular monitoring?
A. Hypertension
,B. Hypotension
C. Bradycardia
D. Hypoglycemia
Correct Answer: A
Expert Explanation: Venlafaxine is a serotonin-norepinephrine reuptake inhibitor
(SNRI) that can cause dose-dependent increases in blood pressure. This effect is
primarily due to the increased levels of norepinephrine in the systemic circulation.
Providers should establish a baseline blood pressure and monitor it regularly
throughout treatment.
3. A patient taking Lithium for Bipolar Disorder presents with coarse tremors,
confusion, and ataxia. What is the most likely cause?
A. Therapeutic effect of the drug
B. Lithium toxicity
C. Extrapyramidal symptoms
D. Serotonin syndrome
Correct Answer: B
Expert Explanation: Lithium has a very narrow therapeutic index, typically
between 0.6 and 1.2 mEq/L. Coarse tremors, ataxia, and mental confusion are classic
,signs of moderate to severe lithium toxicity. Immediate serum lithium levels should
be obtained, and the medication should be held if toxicity is suspected.
4. Which medication is considered the gold standard for the treatment of Bipolar
Disorder but requires monitoring of renal and thyroid function?
A. Lithium
B. Quetiapine
C. Valproate
D. Lamotrigine
Correct Answer: A
Expert Explanation: Lithium is highly effective for stabilizing mood but is excreted
exclusively by the kidneys and can interfere with iodine uptake in the thyroid. Long-
term use is associated with potential nephrotoxicity and hypothyroidism. Therefore,
periodic monitoring of BUN, creatinine, and TSH is a standard of care for these
patients.
5. What is the primary mechanism of action of first-generation (typical) antipsychotics
like Haloperidol?
A. Serotonin 5-HT2A receptor antagonism
B. Norepinephrine reuptake inhibition
, C. GABA-A receptor agonism
D. Dopamine D2 receptor antagonism
Correct Answer: D
Expert Explanation: Typical antipsychotics work by blocking dopamine D2
receptors in the mesolimbic pathway of the brain. While this effectively reduces
positive symptoms of schizophrenia, it also causes significant side effects in the
nigrostriatal pathway. These side effects commonly manifest as extrapyramidal
symptoms (EPS).
6. A patient on Clozapine (Clozaril) must have which laboratory value monitored
weekly for the first 6 months?
A. Absolute Neutrophil Count (ANC)
B. Liver function tests
C. Serum glucose
D. Serum potassium
Correct Answer: A
Expert Explanation: Clozapine is associated with a risk of life-threatening
agranulocytosis, necessitating strict hematologic monitoring. The Absolute
Neutrophil Count (ANC) must be checked weekly initially to ensure it stays within a
