Change in Seizure Threshold During Electroconvulsive Therapy

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In a study of continuation treatments after successful ECT, the ST was determined at the first treatment and again 1 week after remission using a conventional ST measurement protocol. Patients were treated with bilateral electrode placement at 150% above the measured ST.


In 80 subjects, the ST measured the same in 70%, increased in 21%, and decreased in 9% at remission.


In a study of bilateral ECT, the ST did not rise conclusively with remission.

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