The Use of the Stabilization Period in ECT Research in
Schizophrenia : I. A Pilot Study
WORRAWAT CHANPATTANA,M.D.*,
Affiliation : * Department of Psychiatry, Srinakharinwirot University, Vajira Hospital, Samsen, Dusit, Bangkok 10300, Thailand.
t Some parts were presented at the ACT 6th Annual Meeting, Sheraton NewYork Hotel and Towers, New York, USA.
May 5th, 1996; and to the Xth World Congress of Psychiatry, Palacio de Congresos, Madrid, Spain, August 27th.
1996.
tt Partial support was provided by The Thailand Research Fund, grant BR 3980009.
AbstractElectroconvulsive therapy (ECT) has been used to control schizoe~reni~ patients smce
1938. At the present time, the role of ECT treatment in schizophrenia is still controversial. This is
because of the paucity of research of both acute and long term ECT uses, which has also been
characterized by serious methodological flaws. The main problems of these difficulties are :
1) lacking standard of ECT techniques, 2) using heterogeneous groups of patients, and, 3) no
proper outcome measurements. The author hypothesized the 3-week-stabilization- period in
order to use as : 1) a response criterion to delineate the ECT responders from non-res-
ponders, 2) a screening method to obtain a homogeneous group of patients for continuation
treatment study in schizophrenia, and 3) a method to terminate acute ECT treatment. This
pilot study was done prospectively on 35 schizophrenic patients suffering psychotic exacer-
bations. Twenty three patients passed the stabilization period and there were a clear distinction
between responders and non-responders. This study could identify a homogeneous group of
patients, which might be suitable for continuation treatment study. Critical questions regarding
the ECT methodological issues are extensively discussed.
Keywords : ECT, Schizophrenia, Therapeutic Efficacy, Prospective Study, Stabilization Period
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