Intranasal esketamine plus oral antidepressant for treatment-resistant depression: acute induction and maintenance relapse-prevention outcomes in a systematic review and meta-analysis - Scorecard - MDSpire

Intranasal esketamine plus oral antidepressant for treatment-resistant depression: acute induction and maintenance relapse-prevention outcomes in a systematic review and meta-analysis

  • By

  • Jingqiang Xie

  • Chunying Pu

  • Mingyue Sun

  • July 3, 2026

  • 0 min

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Clinical Scorecard: Combination of Intranasal Esketamine and Oral Antidepressant for Treatment-Resistant Depression: Outcomes of Acute Induction and Maintenance in a Systematic Review and Meta-Analysis

At a Glance

CategoryDetail
ConditionTreatment-Resistant Depression (TRD)
Key MechanismsGlutamatergic modulation via NMDA receptor antagonism
Target PopulationPatients with Major Depressive Disorder (MDD) who are treatment-resistant
Care SettingSupervised clinical administration

Key Highlights

  • Intranasal esketamine plus oral antidepressant shows greater symptom reduction at day 28.
  • Rapid improvement in symptoms observed by day 2.
  • Esketamine reduces relapse risk during maintenance in stabilized responders/remitters.
  • Increased risk of treatment-emergent adverse events with esketamine in acute induction.
  • Notable increases in dissociation and blood pressure events.

Guideline-Based Recommendations

Diagnosis

  • Defined as nonresponse to at least two antidepressant trials of adequate dose and duration.

Management

  • Use of intranasal esketamine as an adjunct to oral antidepressants in TRD.

Monitoring & Follow-up

  • Post-dose monitoring required due to safety considerations.

Risks

  • Increased risk of dissociation, sedation, and blood pressure increases.

Patient & Prescribing Data

Adults with treatment-resistant major depressive disorder.

Esketamine provides rapid, modest acute improvement and reduces relapse risk.

Clinical Best Practices

  • Administer esketamine under supervised care.
  • Conduct individualized benefit-risk assessments for patients.

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