NU 643 Exam 3 V2 | NU 643 Advanced
Psychopharmacology | Actual Q&A with
Rationale (NU643 Exam 3) | Regis
University
1. A patient taking Lithium for Bipolar I Disorder presents with a serum level of 1.6 mEq/L.
Which of the following clinical actions is most appropriate for a provider at Regis University
to prioritize?
A. Continue the current dose and recheck in one week.
B. Hold the dose and assess for signs of toxicity such as ataxia or coarse tremors.
C. Increase the dose to reach a therapeutic target of 2.0 mEq/L.
D. Switch the patient immediately to Valproic acid without tapering.
Answer: B
Rationale: A serum lithium level of 1.6 mEq/L is above the standard therapeutic range of
0.6 to 1.2 mEq/L and indicates mild to moderate toxicity. The provider must immediately
hold the medication and conduct a physical assessment for neurological and
gastrointestinal symptoms. Failure to address levels above 1.5 mEq/L can lead to
permanent renal or neurological damage.
2. When prescribing Clozapine (Clozaril), which laboratory value is mandatory to monitor via
the Risk Evaluation and Mitigation Strategy (REMS) program?
A. Serum Creatinine
,B. Thyroid Stimulating Hormone (TSH)
C. Liver Function Tests (LFTs)
D. Absolute Neutrophil Count (ANC)
Answer: D
Rationale: Clozapine carries a black box warning for agranulocytosis, necessitating strict
monitoring of the Absolute Neutrophil Count (ANC). Providers must ensure the ANC is at
least 1500/µL before initiation and follow specific frequencies for ongoing checks. This
monitoring is central to the Clozapine REMS program to prevent life-threatening infections.
3. Which of the following second-generation antipsychotics (SGAs) is most associated with
the highest risk of metabolic syndrome, including significant weight gain and dyslipidemia?
A. Aripiprazole
B. Ziprasidone
C. Lurasidone
D. Olanzapine
Answer: D
Rationale: Olanzapine and Clozapine are recognized as having the highest risk for
metabolic side effects among antipsychotics. Patients frequently experience rapid weight
gain, increased blood glucose, and lipid abnormalities requiring frequent monitoring of
, BMI and metabolic panels. Clinical guidelines suggest considering alternative agents like
Aripiprazole if metabolic issues become unmanageable.
4. A patient being treated with Haloperidol develops high fever, muscle rigidity, and
autonomic instability. What is the most likely diagnosis?
A. Neuroleptic Malignant Syndrome (NMS)
B. Serotonin Syndrome
C. Anticholinergic Toxicity
D. Acute Dystonic Reaction
Answer: A
Rationale: Neuroleptic Malignant Syndrome (NMS) is a life-threatening complication of
antipsychotic use characterized by ‘lead-pipe’ rigidity, hyperthermia, and mental status
changes. This condition requires immediate discontinuation of the offending agent and
supportive care in an intensive care setting. It is differentiated from Serotonin Syndrome
by the presence of severe rigidity rather than hyperreflexia.
5. A patient with Bipolar Disorder is starting Lamotrigine. What is the most critical education
point regarding the ‘Lamictal Rash’?
A. Any new rash must be reported immediately due to the risk of Stevens-Johnson
Syndrome.
B. A mild rash is normal and will disappear within 24 hours.
C. The rash only occurs if the medication is taken with food.
Psychopharmacology | Actual Q&A with
Rationale (NU643 Exam 3) | Regis
University
1. A patient taking Lithium for Bipolar I Disorder presents with a serum level of 1.6 mEq/L.
Which of the following clinical actions is most appropriate for a provider at Regis University
to prioritize?
A. Continue the current dose and recheck in one week.
B. Hold the dose and assess for signs of toxicity such as ataxia or coarse tremors.
C. Increase the dose to reach a therapeutic target of 2.0 mEq/L.
D. Switch the patient immediately to Valproic acid without tapering.
Answer: B
Rationale: A serum lithium level of 1.6 mEq/L is above the standard therapeutic range of
0.6 to 1.2 mEq/L and indicates mild to moderate toxicity. The provider must immediately
hold the medication and conduct a physical assessment for neurological and
gastrointestinal symptoms. Failure to address levels above 1.5 mEq/L can lead to
permanent renal or neurological damage.
2. When prescribing Clozapine (Clozaril), which laboratory value is mandatory to monitor via
the Risk Evaluation and Mitigation Strategy (REMS) program?
A. Serum Creatinine
,B. Thyroid Stimulating Hormone (TSH)
C. Liver Function Tests (LFTs)
D. Absolute Neutrophil Count (ANC)
Answer: D
Rationale: Clozapine carries a black box warning for agranulocytosis, necessitating strict
monitoring of the Absolute Neutrophil Count (ANC). Providers must ensure the ANC is at
least 1500/µL before initiation and follow specific frequencies for ongoing checks. This
monitoring is central to the Clozapine REMS program to prevent life-threatening infections.
3. Which of the following second-generation antipsychotics (SGAs) is most associated with
the highest risk of metabolic syndrome, including significant weight gain and dyslipidemia?
A. Aripiprazole
B. Ziprasidone
C. Lurasidone
D. Olanzapine
Answer: D
Rationale: Olanzapine and Clozapine are recognized as having the highest risk for
metabolic side effects among antipsychotics. Patients frequently experience rapid weight
gain, increased blood glucose, and lipid abnormalities requiring frequent monitoring of
, BMI and metabolic panels. Clinical guidelines suggest considering alternative agents like
Aripiprazole if metabolic issues become unmanageable.
4. A patient being treated with Haloperidol develops high fever, muscle rigidity, and
autonomic instability. What is the most likely diagnosis?
A. Neuroleptic Malignant Syndrome (NMS)
B. Serotonin Syndrome
C. Anticholinergic Toxicity
D. Acute Dystonic Reaction
Answer: A
Rationale: Neuroleptic Malignant Syndrome (NMS) is a life-threatening complication of
antipsychotic use characterized by ‘lead-pipe’ rigidity, hyperthermia, and mental status
changes. This condition requires immediate discontinuation of the offending agent and
supportive care in an intensive care setting. It is differentiated from Serotonin Syndrome
by the presence of severe rigidity rather than hyperreflexia.
5. A patient with Bipolar Disorder is starting Lamotrigine. What is the most critical education
point regarding the ‘Lamictal Rash’?
A. Any new rash must be reported immediately due to the risk of Stevens-Johnson
Syndrome.
B. A mild rash is normal and will disappear within 24 hours.
C. The rash only occurs if the medication is taken with food.
