Exploring the influencing factors of initial seizure time during modified electroconvulsive therapy in patients under 30 years old with mental disorders - Report - MDSpire

Exploring the influencing factors of initial seizure time during modified electroconvulsive therapy in patients under 30 years old with mental disorders

  • By

  • Wanwen Li

  • Mingjian Cai

  • Xiaoli Sun

  • Huali Huang

  • Chao Ding

  • Shuang Fu

  • Changjiang Zhu

  • July 8, 2026

  • 0 min

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Clinical Report: Factors Affecting Initial Seizure Duration in MECT

Overview

This study investigates factors influencing initial seizure duration during modified electroconvulsive therapy (MECT) in patients under 30 years old with mental disorders. Key predictors identified include age, energy percentage, and etomidate dose.

Background

Modified electroconvulsive therapy (MECT) is a critical intervention for young patients with severe mental disorders, yet standardized guidelines for its application in this demographic are lacking. Seizure duration is closely linked to therapeutic outcomes, with ideal durations ranging from 15 to 75 seconds. Prolonged seizures can lead to adverse effects.

Data Highlights

MetricValue
Average Precision76.9%
Recall75.1%
F1-Score74.4%
Age Importance Coefficient0.338
Energy Percentage Importance Coefficient0.252
Etomidate Dose Importance Coefficient0.208

Key Findings

  • Age, energy percentage, and etomidate dose are the primary factors influencing seizure duration during MECT.
  • The model achieved an average precision of 76.9%.
  • Seizure durations exceeding 75 seconds significantly increase the risk of cognitive impairment and delirium.
  • Only 30% of patients under 30 years old achieved ideal seizure durations with traditional energy settings.

Clinical Implications

Clinicians should consider age, energy percentage, and etomidate dosage when determining initial treatment parameters for MECT in patients under 30.

Conclusion

The study identifies age, energy percentage, and etomidate dose as critical predictors of ideal seizure duration during initial MECT.

Related Resources & Content

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  2. Brain, 2025 -- Influence of Seizure Localization on the Efficacy of Responsive Neurostimulation in a State-Dependent Manner
  3. Diverse Ictal Onset Patterns Contribute to Seizure Development in Seizure-Free Individuals Post-Temporal Lobe Epilepsy Surgery: Insights from an SEEG Analysis, 2021
  4. Intensive Care Medicine — Incidence and Outcomes of Seizures in 204 Unconscious Pediatric Patients
  5. The practice of electroconvulsive therapy: recommendations for treatment, training, and privileging
  6. Brain Stimulation Therapies - National Institute of Mental Health (NIMH)
  7. Depression in adults: treatment and management NICE guideline NG222 | 2025 surveillance of electroconvulsive therapy
  8. Policy Statement on Electroconvulsive Therapy
  9. Electroconvulsive Therapy - StatPearls - NCBI Bookshelf
  10. Seizure Duration and Electroconvulsive Therapy in Major Depressive Disorder | Neurology | JAMA Network Open | JAMA Network
  11. Age and First Seizure Length in Electroconvulsive Therapy - PubMed
  12. Electroconvulsive therapy-induced motor seizure length trajectories and their association with clinical remission: a retrospective cohort study across diagnoses
  13. Anesthetic choice matters: a retro-prospective analysis of propofol vs etomidate on seizure and recovery parameters in modified electroconvulsive therapy | Middle East Current Psychiatry | Springer Nature Link
  14. Beyond the surface: analyzing etomidate and propofol as anesthetic agents in electroconvulsive therapy—A systematic review and meta-analysis of seizure duration outcomes - PMC
  15. The influence of anaesthetic choice on seizure duration of electroconvulsive therapy; etomidate versus methohexital | BMC Anesthesiology | Springer Nature Link
  16. Effectiveness and Safety of Flumazenil Augmentation During Electroconvulsive Therapy - PubMed

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