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Difficulty: MediumDepressive Disorders

A 6565-year-old retired firefighter is brought to the outpatient clinic by his husband. For the past 55 weeks, the patient has experienced a pervasive low mood, early morning awakenings, and a lack of interest in his previously beloved woodworking projects. He has lost 55 kg (1111 lb) during this period. The symptoms started roughly 22 weeks after he suffered an uncomplicated myocardial infarction. He says, "My life is essentially over; there is nothing to look forward to." Past medical history includes hypertension and the recent myocardial infarction. Thirty-five years ago, he experienced an episode of paranoia and auditory hallucinations that lasted for 1414 days and resolved completely without any subsequent psychotic symptoms. Current medications include aspirin, ticagrelor, metoprolol, rosuvastatin, and linezolid, which was started 44 days ago for a methicillin-resistant Staphylococcus aureus skin infection. The patient's advance directive designates his sister as his healthcare proxy. He is alert, oriented, and demonstrates a clear understanding of his diagnosis and treatment options. His husband pulls the physician aside and says, "He is too sad to think straight; I am his spouse, so I authorize you to prescribe whatever strong medication he needs right now." The physician concludes that the patient is experiencing a major depressive episode. Which of the following is the most appropriate next step in management?

  1. Inquire about prior episodes characterized by unusually high energy, grandiosity, and reduced sleepAnswer
  2. B
    Begin therapy with escitalopram and arrange for a clinical reassessment in 11 month
  3. C
    Establish a diagnosis of schizophrenia due to the historical psychiatric hospitalization and start olanzapine
  4. D
    Prescribe tranylcypromine to aggressively manage the current major depressive episode
  5. E
    Obtain consent for antidepressant therapy from the husband, acting as the primary next-of-kin

Answer

Inquire about prior episodes characterized by unusually high energy, grandiosity, and reduced sleep
Before initiating antidepressant monotherapy for a major depressive episode, it is critical to rule out a history of bipolar disorder. Unopposed antidepressants (such as SSRIs) can precipitate a manic or hypomanic episode in patients with bipolar depression. Therefore, the physician must inquire about prior episodes of elevated mood, impulsivity, and decreased need for sleep to ensure safe pharmacotherapy.

Step-by-Step Solution

1
Evaluate the patient's presenting symptoms and timeline.
The patient meets the diagnostic criteria for a major depressive episode (depressed mood, anhedonia, weight loss, insomnia) lasting more than 22 weeks.
To establish the primary psychiatric syndrome requiring intervention.
2
Review the patient's past psychiatric history and current medication list.
The history reveals a resolved brief psychotic disorder and current linezolid use, but no documented screening for bipolar disorder.
To identify contraindications or necessary prerequisites before starting pharmacotherapy.
3
Determine the safest next clinical action before initiating standard depression treatment.
Screening for past hypomanic or manic episodes must be performed to differentiate unipolar from bipolar depression.
Antidepressant monotherapy in bipolar depression can induce a dangerous manic switch.

Key Concept

All patients presenting with a major depressive episode must be carefully screened for a history of mania or hypomania to rule out bipolar disorder before initiating unopposed antidepressant therapy.
Estimated Time:1m 30s
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Topics

Depressive Disorders

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