Berens E S, Yesavage J A, Leirer V O
J Clin Psychiatry. 1982 Apr;43(4):126-8.
In a retrospective study of 30 patients receiving either single ECT (N = 17) or multiple monitored ECT (N = 13), no difference in effectiveness or safety was seen between treatments. However, patients who received multiple monitored ECT had fewer sessions of general anesthesia and a significantly more rapid course of treatment.