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Difficulty: MediumDepressive Disorders

A 47-year-old male accountant presents to an outpatient psychiatric clinic with a 3-month history of pervasive sadness, anhedonia, terminal insomnia, profound fatigue, impaired concentration, and a 12-lb (5.4 kg) weight loss. He is diagnosed with a severe episode of major depressive disorder without psychotic features. Over the next 14 months, his condition proves remarkably difficult to treat, eventually culminating in a hospitalization for depressive stupor and mood-congruent delusions.

Arrange the following therapeutic interventions in the most appropriate chronological sequence according to standard stepped-care escalation algorithms for major depressive disorder.

  1. 1Initiation of a selective serotonin reuptake inhibitor (e.g., citalopram)
  2. 2Cross-tapering to a serotonin-norepinephrine reuptake inhibitor (e.g., duloxetine)
  3. 3Augmentation therapy with a second-generation antipsychotic (e.g., aripiprazole)
  4. 4Administration of electroconvulsive therapy (ECT)

Answer

The correct sequence for the stepped-care management of major depressive disorder is: 1) Initiation of an SSRI, 2) Cross-tapering to an SNRI after monotherapy failure, 3) Augmentation with a second-generation antipsychotic after multiple monotherapy failures, and 4) Electroconvulsive therapy for treatment-refractory depression with the emergence of psychotic features.
Stepped-care for major depressive disorder begins with a single first-line agent, typically an SSRI. If this fails, the next step is switching to an alternative monotherapy, such as an SNRI or an atypical antidepressant (e.g., bupropion). If the patient remains resistant after multiple monotherapy trials, augmentation strategies are employed (e.g., adding a second-generation antipsychotic, lithium, or T3). Finally, for severe treatment-resistant depression—or when life-threatening complications like depressive stupor or psychotic features arise—electroconvulsive therapy (ECT) becomes the treatment of choice.

Step-by-Step Solution

1
Identify the standard first-line treatment for a new diagnosis of major depressive disorder.
Initiation of an SSRI (citalopram) is placed first in the sequence.
SSRIs have a favorable side-effect profile and are the gold standard for initial outpatient management.
2
Determine the next step when the initial first-line therapy fails to produce remission.
Cross-tapering to an SNRI (duloxetine) is placed second.
Switching monotherapies within or across classes is generally preferred before moving to polypharmacy in order to minimize medication burden.
3
Determine the strategy for a patient who has now failed multiple trials of monotherapy.
Augmentation therapy with a second-generation antipsychotic (aripiprazole) is placed third.
Once multiple monotherapies have failed, adding an augmenting agent is the next evidence-based step for treatment-resistant depression.
4
Identify the ultimate intervention for highly refractory disease, especially when complicated by psychosis or stupor.
Electroconvulsive therapy (ECT) is placed last in the sequence.
The patient eventually developed depressive stupor and mood-congruent delusions, which are primary indications for ECT in severe, refractory cases.

Key Concept

Stepped-care escalation for treatment-resistant major depressive disorder
Estimated Time:1m 0s
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Topics

Depressive Disorders

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