NR 546 Week 9 Exam V2 | NR 546 Advanced
Pharmacology Psychopharmacology for the
PMHNP | Actual Q&A with Rationale (NR546 Week
9 Exam) | Chamberlain University
1. A PMHNP is considering starting a patient on Clozapine. Which laboratory value must be
documented in the National Clozapine Registry before the medication can be dispensed?
A. Platelet count
B. Absolute Neutrophil Count (ANC)
C. Liver Function Tests (LFTs)
D. Blood Urea Nitrogen (BUN)
Correct Answer: B
Explanation: The Absolute Neutrophil Count (ANC) is the critical laboratory value
required for monitoring patients on Clozapine due to the risk of severe neutropenia. The
Clozapine REMS program mandates that clinicians track these values to prevent life-
threatening agranulocytosis. Treatment must be interrupted if the ANC falls below specific
thresholds defined by the registry.
2. When prescribing Lithium for a patient with bipolar disorder, which of the following
represents the standard therapeutic range for acute stabilization?
A. 0.8 - 1.2 mEq/L
B. 0.1 - 0.5 mEq/L
,C. 1.5 - 2.0 mEq/L
D. 2.5 - 3.0 mEq/L
Correct Answer: A
Explanation: The standard therapeutic range for Lithium during acute manic episodes is
generally 0.8 to 1.2 mEq/L. Maintaining levels within this window is vital because Lithium
has a narrow therapeutic index, meaning toxicity occurs just above therapeutic levels.
Monitoring serum levels is mandatory to ensure efficacy while avoiding severe side effects
like tremors, confusion, or renal failure.
3. A patient taking Phenelzine (Nardil) attends a party and consumes aged cheese and red
wine. Which medical emergency should the PMHNP be most concerned about?
A. Serotonin Syndrome
B. Hypertensive Crisis
C. Neuroleptic Malignant Syndrome
D. Agranulocytosis
Correct Answer: B
Explanation: Phenelzine is a Monoamine Oxidase Inhibitor (MAOI) that prevents the
breakdown of tyramine found in aged foods. When high levels of tyramine enter the
bloodstream, they trigger a massive release of norepinephrine, leading to a dangerous
hypertensive crisis. Patients on MAOIs must strictly follow a low-tyramine diet to prevent
significant morbidity and mortality.
, 4. Which mechanism of action best describes how Selective Serotonin Reuptake Inhibitors
(SSRIs) exert their antidepressant effect?
A. Blocking the SERT reuptake pump
B. Antagonizing 5-HT2A receptors
C. Inhibiting Monoamine Oxidase enzymes
D. Increasing GABAergic transmission
Correct Answer: A
Explanation: SSRIs work by specifically binding to and inhibiting the serotonin
transporter (SERT) at the presynaptic neuron. This action increases the concentration of
serotonin available in the synaptic cleft for postsynaptic binding. Over time, this sustained
increase in serotonin leads to downstream neurobiological changes that alleviate
depressive symptoms.
5. A patient treated with Haloperidol presents with internal restlessness, inability to sit still,
and pacing. How should the PMHNP document this extrapyramidal symptom?
A. Dystonia
B. Tardive Dyskinesia
C. Akathisia
D. Pseudoparkinsonism
Correct Answer: C
Pharmacology Psychopharmacology for the
PMHNP | Actual Q&A with Rationale (NR546 Week
9 Exam) | Chamberlain University
1. A PMHNP is considering starting a patient on Clozapine. Which laboratory value must be
documented in the National Clozapine Registry before the medication can be dispensed?
A. Platelet count
B. Absolute Neutrophil Count (ANC)
C. Liver Function Tests (LFTs)
D. Blood Urea Nitrogen (BUN)
Correct Answer: B
Explanation: The Absolute Neutrophil Count (ANC) is the critical laboratory value
required for monitoring patients on Clozapine due to the risk of severe neutropenia. The
Clozapine REMS program mandates that clinicians track these values to prevent life-
threatening agranulocytosis. Treatment must be interrupted if the ANC falls below specific
thresholds defined by the registry.
2. When prescribing Lithium for a patient with bipolar disorder, which of the following
represents the standard therapeutic range for acute stabilization?
A. 0.8 - 1.2 mEq/L
B. 0.1 - 0.5 mEq/L
,C. 1.5 - 2.0 mEq/L
D. 2.5 - 3.0 mEq/L
Correct Answer: A
Explanation: The standard therapeutic range for Lithium during acute manic episodes is
generally 0.8 to 1.2 mEq/L. Maintaining levels within this window is vital because Lithium
has a narrow therapeutic index, meaning toxicity occurs just above therapeutic levels.
Monitoring serum levels is mandatory to ensure efficacy while avoiding severe side effects
like tremors, confusion, or renal failure.
3. A patient taking Phenelzine (Nardil) attends a party and consumes aged cheese and red
wine. Which medical emergency should the PMHNP be most concerned about?
A. Serotonin Syndrome
B. Hypertensive Crisis
C. Neuroleptic Malignant Syndrome
D. Agranulocytosis
Correct Answer: B
Explanation: Phenelzine is a Monoamine Oxidase Inhibitor (MAOI) that prevents the
breakdown of tyramine found in aged foods. When high levels of tyramine enter the
bloodstream, they trigger a massive release of norepinephrine, leading to a dangerous
hypertensive crisis. Patients on MAOIs must strictly follow a low-tyramine diet to prevent
significant morbidity and mortality.
, 4. Which mechanism of action best describes how Selective Serotonin Reuptake Inhibitors
(SSRIs) exert their antidepressant effect?
A. Blocking the SERT reuptake pump
B. Antagonizing 5-HT2A receptors
C. Inhibiting Monoamine Oxidase enzymes
D. Increasing GABAergic transmission
Correct Answer: A
Explanation: SSRIs work by specifically binding to and inhibiting the serotonin
transporter (SERT) at the presynaptic neuron. This action increases the concentration of
serotonin available in the synaptic cleft for postsynaptic binding. Over time, this sustained
increase in serotonin leads to downstream neurobiological changes that alleviate
depressive symptoms.
5. A patient treated with Haloperidol presents with internal restlessness, inability to sit still,
and pacing. How should the PMHNP document this extrapyramidal symptom?
A. Dystonia
B. Tardive Dyskinesia
C. Akathisia
D. Pseudoparkinsonism
Correct Answer: C
