50 Hz vs. 25 Hz Magnetic Seizure Therapy for Schizophrenia

Shanghai Mental Health Center18 enrolled

Overview

This trial attempts to investigate whether the dosage (frequency) has an effect on the treatment efficacy and cognitive outcomes of magnetic seizure therapy (MST) among schizophrenia patients. Half of the participants will be recruited to receive 25 Hz MST, while the other half will be recruited to 50 Hz MST.

Magnetic seizure therapy (MST) is likely to be an alternative options to electroconvulsive therapy (ECT).Widespread stimulation of cortical and subcortical regions is inevitable for ECT since the substantial impedance of the scalp and skull shuts most of the electrical stimulus away from the brain. Nevertheless, magnetic pulses are capable to focus the stimulus to a specific area of the brain because they can pass the scalp and skull without resistance. In Addition, electric current will penetrate into deeper structures, while magnetic stimulus are only capable to reach a depth of a few centimeters. As a consequence, MST are able to generate focus stimuli on superficial regions of the cortex while ECT can't, which may give MST the capability to produce comparable therapeutic benefits with the absence of apparent cognitive side effects. Though high dose (frequency) MST is gaining popularity, there is no evidences supporting its superiority over low dose (frequency) MST either on efficacy, safety, or seizure quality.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Schizophrenia

Interventions

25 Hz magnetic seizure therapyPROCEDURE

In addition to treatment as usual (TAU), participants were supposed to receive ten sessions of 25 Hz MST in four weeks, with three sessions per week in the first two weeks and two sessions per week in the following two weeks.

50 Hz magnetic seizure therapyPROCEDURE

In addition to treatment as usual (TAU), participants were supposed to receive ten sessions of 50 Hz MST in four weeks, with three sessions per week in the first two weeks and two sessions per week in the following two weeks.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 55 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. DSM-5 diagnosis of schizophrenia; 2. convulsive therapy clinically indicated, such as severe psychomotor excitement or retardation, attempts of suicide, being highly aggressive, pharmacotherapy intolerance, and ineffectiveness of antipsychotics; 3. the positive and negative syndrome scale (PANSS)\[20\] score ≥ 60; 4. informed consent in written form. Exclusion Criteria: 1. diagnosis of other mental disorders; 2. severe physical diseases, such as stroke, heart failure, liver failure, neoplasm, and immune deficiency; 3. present with a laboratory abnormality that could impact on efficacy of treatments or safety of participants; 4. failure to respond to an adequate trial of ECT lifetime; 5. are pregnant or intend to get pregnant during the study; 6. other conditions that investigators consider to be inappropriate to participate in this trial.

Locations (1)

Shanghai Mental Health Center

Shanghai, Shanghai Municipality, China

Outcomes

Primary Outcomes

changes of The Positive and Negative Syndrome Scale (PANSS)

Time frame: At baseline, 4-week follow-up

Secondary Outcomes

changes of The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS)

Time frame: At baseline and 4-week follow-up

seizure duration

Time frame: at each treatment session, up to 4 weeks

Adverse events

Time frame: up to 4 weeks

Data from ClinicalTrials.gov

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