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Updated: Jun 25, 2025
08:20
MRI-guided dmPFC-rTMS as a Treatment for Treatment-resistant Major Depressive Disorder
Published on: August 11, 2015
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Depression: Managing Resistance and Partial Response to Treatment
Heidi L Gaddey1, Brandyn Mason1, Amol Naik1
1Carle Foundation Hospital Family Medicine Residency, Urbana, Illinois.
American Family Physician
|May 28, 2024
Summary
Treatment-resistant depression (TRD) affects many patients despite multiple medication trials. Management involves psychotherapy, medication adjustments, or novel treatments like ketamine, electroconvulsive therapy, and transcranial magnetic stimulation.
Area of Science:
- Neuroscience
- Psychiatry
- Pharmacology
Background:
- Treatment-resistant depression (TRD) is a significant clinical challenge, affecting up to 31% of individuals with major depressive disorder.
- TRD is characterized by a lack of remission despite adequate trials of at least two antidepressant medications.
- Partial response, defined as less than 50% symptom reduction, necessitates careful adherence confirmation before diagnosing TRD.
Purpose of the Study:
- To outline current management strategies for treatment-resistant depression (TRD).
- To review pharmacologic and non-pharmacologic interventions for TRD.
- To discuss the role of newer treatments and the limitations of pharmacogenetic testing.
Main Methods:
- Review of current clinical guidelines and evidence for TRD management.
- Identification of augmentation strategies including pharmacologic and non-pharmacologic options.
- Evaluation of emerging treatments such as ketamine, esketamine, electroconvulsive therapy (ECT), and repetitive transcranial magnetic stimulation (rTMS).
Main Results:
- Augmentation with second-generation antidepressants, atypical antipsychotics, tricyclic antidepressants, lithium, or triiodothyronine are recommended pharmacologic options.
- Ketamine and esketamine show potential for TRD and reducing suicidal ideation.
- Electroconvulsive therapy (ECT) and repetitive transcranial magnetic stimulation (rTMS) are effective non-pharmacologic interventions.
- Pharmacogenetic testing currently lacks sufficient evidence for routine clinical recommendation.
Conclusions:
- Effective management of TRD involves a multimodal approach, including psychotherapy, medication class switching, and augmentation.
- Novel pharmacologic agents (ketamine, esketamine) and neuromodulation techniques (ECT, rTMS) offer promising alternatives for refractory depression.
- Confirmation of medication adherence and dose is critical prior to implementing advanced TRD strategies.
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