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Difficulty: HardBipolar and Related Disorders

A 35-year-old male architect is brought to the outpatient psychiatry clinic by his brother due to worsening depression. For the past 5 weeks, the patient has exhibited profound sadness, anhedonia, and severe fatigue. He struggles to concentrate at work and is sleeping up to 14 hours a day. The brother reports that 3 years ago, the patient had a 3-week period where he slept only 2 hours a night, spoke extremely rapidly, and believed he was receiving direct telepathic messages from aliens instructing him to redesign the city's infrastructure. During that time, he drained his personal savings to fund the project before his symptoms gradually subsided without formal medical treatment. The patient has no other medical conditions and takes no medications. Vital signs are within normal limits. Mental status examination reveals a depressed affect, psychomotor retardation, and tearfulness, but no current suicidal ideation or psychotic symptoms. Which of the following is the most appropriate next step in management?

  1. Initiate lurasidoneAnswer
  2. B
    Initiate sertraline
  3. C
    Initiate venlafaxine
  4. D
    Contact the patient's employer to warn them of potential architectural errors
  5. E
    Diagnose schizophreniform disorder and initiate risperidone

Answer

Initiate lurasidone
This patient is currently experiencing a major depressive episode, but his history of a 3-week episode characterized by decreased sleep, pressured speech, and grandiose delusions confirms a diagnosis of Bipolar I Disorder. First-line pharmacotherapy for acute bipolar depression includes certain second-generation antipsychotics (e.g., lurasidone, quetiapine, cariprazine) or mood stabilizers (e.g., lithium). Lurasidone is highly effective for bipolar depression and has a favorable metabolic profile.

Step-by-Step Solution

1
Analyze the patient's past psychiatric history.
The patient had a 3-week episode of decreased sleep, pressured speech, severe impulsivity (draining savings), and grandiose delusions.
Identifying past episodes is crucial to differentiating unipolar major depressive disorder from bipolar disorder. The prior episode meets full criteria for a Manic Episode with psychotic features.
2
Assess the current clinical presentation.
The patient is currently experiencing a major depressive episode (depressed mood, anhedonia, hypersomnia, fatigue, psychomotor retardation for 5 weeks).
Combining the past manic episode with the current depressive episode establishes a diagnosis of Bipolar I Disorder, currently in a depressed phase.
3
Evaluate treatment options for acute bipolar depression while ruling out contraindications.
Antidepressant monotherapy must be avoided. An agent approved for bipolar depression, such as lurasidone, is required.
Using traditional antidepressants without a mood stabilizer in Bipolar I disorder can precipitate a manic switch. First-line treatments for acute bipolar depression include lurasidone, quetiapine, cariprazine, or the olanzapine-fluoxetine combination.

Key Concept

Patients presenting with depressive episodes must be screened for past manic episodes to accurately diagnose Bipolar I Disorder and avoid the administration of antidepressant monotherapy, which can trigger a manic switch.
Estimated Time:1m 30s
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Topics

Bipolar and Related Disorders

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