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Difficulty: MediumBipolar and Related Disorders

A 23-year-old male construction worker is evaluated at an occupational health clinic after sustaining a minor ankle sprain. During the evaluation, the physician notes that the patient exhibits psychomotor retardation and a markedly flat affect. The patient admits to feeling overwhelmingly sad and sleeping nearly 15 hours a day for the past six weeks, which has severely impaired his job performance. A thorough psychiatric review of systems reveals that two years ago, he experienced a distinct 6-week period where he worked his construction job all day, drove for a rideshare company all night, slept only 90 minutes per night, and felt "more powerful than ever." He is not currently taking any medications. Which of the following medications are appropriate monotherapy choices for his current clinical presentation? (Select all that apply)

  1. QuetiapineAnswer
  2. LurasidoneAnswer
  3. C
    Paroxetine
  4. D
    Venlafaxine
  5. E
    Fluoxetine

Answer

Quetiapine and Lurasidone
This patient is presenting with a major depressive episode but has a clear history of a past manic episode (decreased need for sleep, boundless energy, and hyper-productivity lasting six weeks). This establishes a diagnosis of bipolar I disorder, currently depressed. The standard of care for acute bipolar depression includes monotherapy with specific second-generation antipsychotics (e.g., quetiapine, lurasidone, cariprazine) or certain mood stabilizers (e.g., lithium, lamotrigine). Both quetiapine and lurasidone are highly effective, FDA-approved first-line options for acute bipolar depression.

Step-by-Step Solution

1
Evaluate the current symptom profile.
The patient is experiencing a major depressive episode, indicated by psychomotor retardation, severe sadness, and hypersomnia lasting six weeks.
Identifying the current mood state is the first step in determining appropriate pharmacotherapy.
2
Review the patient's past psychiatric history.
There is a clear history of a distinct period of elevated mood, decreased need for sleep, and increased goal-directed activity lasting six weeks.
Past episodes of mania or hypomania fundamentally change the diagnosis and management of current depressive symptoms.
3
Synthesize the findings to establish a diagnosis.
The combination of a current major depressive episode and a past manic episode confirms a diagnosis of bipolar I disorder, currently depressed.
Treatment for bipolar depression differs significantly from unipolar major depressive disorder.
4
Select appropriate pharmacotherapy.
Quetiapine and Lurasidone are both approved and effective monotherapies for bipolar depression. Antidepressant monotherapy (such as Paroxetine, Venlafaxine, or Fluoxetine) must be avoided.
Antidepressant monotherapy in bipolar disorder can precipitate a dangerous manic switch.

Key Concept

Bipolar I depression requires treatment with specific mood stabilizers or atypical antipsychotics; antidepressant monotherapy is contraindicated due to the risk of inducing a manic episode.
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Bipolar and Related Disorders

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