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Difficulty: MediumBipolar and Related Disorders

A 38-year-old male software engineer is evaluated in the clinic for worsening mood. He reports feeling profoundly sad, having no energy, sleeping up to 14 hours a day, and gaining 4.5 kg (10 lb) over the past 6 weeks. His husband notes that the patient has been unable to concentrate on his work and frequently expresses feelings of worthlessness. The patient has no other medical conditions and currently takes no medications. A review of his medical records reveals a psychiatric hospitalization three years ago for a 10-day episode characterized by an abnormally elevated mood, a decreased need for sleep (averaging 2 hours per night), pressured speech, and reckless financial investments that led to personal bankruptcy. His vital signs and physical examination today are unremarkable. Which of the following are appropriate pharmacological interventions for this patient's current condition? (Select all that apply)

  1. Initiate treatment with lurasidoneAnswer
  2. Initiate treatment with quetiapineAnswer
  3. C
    Initiate monotherapy with sertraline
  4. D
    Initiate treatment with fluoxetine and phenelzine
  5. Initiate treatment with lithiumAnswer

Answer

The appropriate pharmacological interventions for this patient are initiating treatment with lurasidone, quetiapine, or lithium.
The patient is experiencing an acute depressive episode in the context of Bipolar I Disorder, which is diagnosed based on his current presentation and a history of a severe manic episode that required hospitalization. The standard of care for acute bipolar depression includes initiating a mood stabilizer (such as lithium) or specific second-generation antipsychotics (such as quetiapine or lurasidone). These agents are favored because they have proven efficacy in treating the depressive phase of bipolar disorder without a significant risk of inducing a manic switch.

Step-by-Step Solution

1
Evaluate the current presenting symptoms.
The patient exhibits profound sadness, hypersomnia, weight gain, anhedonia, and poor concentration lasting for 6 weeks, which meets the criteria for a major depressive episode.
Identifying the current phase of the mood disorder is essential to selecting the right intervention.
2
Review the patient's psychiatric history.
The patient has a history of a 10-day episode involving elevated mood, decreased need for sleep, pressured speech, and reckless behavior requiring hospitalization, establishing a past manic episode.
A history of a manic episode changes the diagnosis from Major Depressive Disorder to Bipolar I Disorder, fundamentally altering the treatment protocol.
3
Select appropriate pharmacological therapies for acute bipolar depression.
First-line treatments for acute bipolar depression include specific second-generation antipsychotics (quetiapine, lurasidone) and mood stabilizers (lithium, valproate).
These medications effectively treat depressive symptoms in bipolar patients without carrying the high risk of inducing a manic switch that is associated with antidepressant monotherapy.

Key Concept

The management of acute bipolar depression requires mood stabilizers or specific second-generation antipsychotics, explicitly avoiding antidepressant monotherapy due to the risk of precipitating a manic switch.
Estimated Time:1m 30s
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Bipolar and Related Disorders

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