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Optimizing Stimulation Parameters for Electroconvulsive Therapy (PRESTO)

2 september 2026 uppdaterad av: Zach Rosenthal, University of Pennsylvania

Parameter Refinement for ECT Stimulation and Titration Optimization

The goal of this clinical trial is to improve how electroconvulsive therapy (ECT) stimulation settings are chosen. Researchers will use real-time brain monitoring to measure both seizures and a recently identified brain event called cortical spreading depolarization (CSD).

The main questions it aims to answer are:

What is the best way to increase ECT stimulation settings? How do different pulse settings affect the brain's response? Can certain settings produce CSD without causing a seizure?

Participants already receiving ECT as part of their care will take part. They will be assigned to one of two groups:

Index ECT group: Participants starting ECT will receive different standard titration approaches.

Maintenance ECT group: Participants receiving ongoing ECT will undergo a brief, low-dose stimulation test before treatment.

All participants will be monitored using brain physiology (EEG and blood flow) and symptom scales during treatment.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This is an exploratory, single-center open-label clinical trial at Pennsylvania Hospital (PAH) intended to optimize stimulation settings for electroconvulsive therapy (ECT), guided by real-time monitoring of both seizure and a recently discovered postictal event: cortical spreading depolarization (CSD). We will address three key questions: 1. What is the best strategy for up-titrating settings for ECT?; 2. How do individual pulse parameters impact brain evoked response?; 3. Are there stimulation settings that directly induce CSD waves without seizure?

This study will take place in the context of routine treatments for patients already consenting to receive ECT for a wide range of clinical indications. Patients will be enrolled in one of two arms:

  1. Index Titration Arm: Patients coming in for initial index ECT courses (acute phase) will be randomized to one of several stimulation parameter titration tables while receiving otherwise routine ECT care.
  2. Maintenance Arm: In clinically stable patients receiving monthly maintenance ECT, a sub-convulsive stimulation settings ramp will be performed under anesthesia immediately preceding their regular ECT treatment.

All patients being treated with ECT at PAH are eligible for this study. Outcomes will include non-invasive monitoring of brain hemodynamics and EEG as well as clinical symptom scales.

Studietyp

Interventionell

Inskrivning (Beräknad)

64

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

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Studieorter

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Barn
  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inclusion Criteria:

  • Any patients being treated with electroconvulsive therapy at Pennsylvania Hospital who are willing and able to participate are eligible to be subjects in this study.

Exclusion Criteria:

  1. They are unwilling or unable to consent first to the SWEET COMBO protocol for optical monitoring during ECT
  2. Clinically significant psychiatric comorbidity as determined by clinical interview and in the opinion of the Investigator and clinical team would alter the risk/benefit of the study
  3. History of poor response to ECT treatment in the opinion of the Investigator and clinical team that would alter the risk/benefit of the study

  4. Presence of any disease, medical condition or physical condition that, in the opinion of the Investigator, may compromise, interfere with, limit, affect or reduce the:

    1. subject's ability to participate safely in the study
    2. integrity of the data or
    3. subject's ability to complete the full duration of the study.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Dubbel

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Aktiv komparator: Index: Standard titration table
Patients are treated with ECT using titration table 1 (alternating increases in frequency and duration)
Procedur: Electroconvulsive Therapy
Electrical stimulation under anesthesia
Experimentell: Index: Frequency-then-duration
ECT provided using Table 2, frequency uptitration followed by duration uptitration
Procedur: Electroconvulsive Therapy
Electrical stimulation under anesthesia
Experimentell: Index: Duration then Frequency
ECT provided using Table 3, duration titration then frequency titration
Procedur: Electroconvulsive Therapy
Electrical stimulation under anesthesia
Övrig: Maintenance
Internal cross-over arm in which patients undergo 8 sessions using 8 randomized sub-convulsive stimulation protocols
Procedur: Electroconvulsive Therapy
Electrical stimulation under anesthesia

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Brain hemodynamics
Tidsram: Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Functional near infrared spectroscopy imaging will be performed during each ECT treatment, from which we will extract oxy- and deoxyhemoglobin concentrations (in mM) over time.
Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Electroencephalography - Seizure Duration
Tidsram: Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Bilateral EEG over FP1 and FP2 zones, from which we will compute seizure duration (in seconds)
Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Electroencephalography - theta band power
Tidsram: Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Bilateral EEG over FP1 and FP2 zones, from which we will compute theta band power (in dB)
Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Electroencephalography - Brain Symmetry Index
Tidsram: Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.
Bilateral EEG over FP1 and FP2 zones, from which we will compute brain symmetry index (unitless)
Periprocedural (10-20 minutes per ECT session). Assessed repeatedly over approximately 12 ECT sessions for index arm patients (3 times/week for 4-6 weeks), or for 8 sessions (once a month for 8 months) in the maintenance arm.

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Quick Inventory of Depression Self-Report
Tidsram: Administered pre-procedurally at baseline and once weekly for index arm patients (for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Depression symptom scale filled out by patient. Unitless, ranging from 0-27.
Administered pre-procedurally at baseline and once weekly for index arm patients (for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Bush Francis Catatonia Rating Scale
Tidsram: Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Catatonia rating scale conducted by clinical team. Unitless, ranging from 0-69.
Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Single Letter Fluency
Tidsram: Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Test of verbal fluency. Unit is number of words starting with a given letter provided in a one minute period.
Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
3 word registration and recall
Tidsram: Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Test of short term memory. Unit is number (out of 3) words registered and repeated back at 0 minutes, and the same at 3 minutes delay.
Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
Psychotic Depression Assessment Scale (PDAS)
Tidsram: Administered pre-procedurally at baseline and once weekly for index arm patients (for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients
Psychosis rating scale for patients with psychosis, to be administered by clinical team. Unitless, ranging from 0-44.
Administered pre-procedurally at baseline and once weekly for index arm patients (for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients
Clinical Global Impressions Scale for Severity and Improvement
Tidsram: Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.
To be determined by clinical team. Unitless, ranging from 0-7.
Administered pre-procedurally at baseline and prior to every ECT treatment for index arm patients (12 treatments, 3 times weekly for for 4-6 weeks), or once monthly (for 8 months) in maintenance arm patients.

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Sponsor

University of Pennsylvania

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

1 december 2026

Primärt slutförande (Beräknad)

30 juni 2029

Avslutad studie (Beräknad)

30 juni 2030

Studieregistreringsdatum

Först inskickad

25 mars 2026

Först inskickad som uppfyllde QC-kriterierna

23 april 2026

Första postat (Faktisk)

1 maj 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

4 september 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

2 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 26-6396

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