Minimum Plasma Lithium Levels Required for Effective Prophylaxis in DSM III Bipolar Disorder: A Prospective Study
- 1 November 1986
- journal article
- clinical trial
- Published by Georg Thieme Verlag KG in Pharmacopsychiatry
- Vol. 19 (06) , 420-423
- https://doi.org/10.1055/s-2007-1017280
Abstract
Four groups of DSM III bipolar patients, whose plasma lithium levels were maintained at 0.30-0.45 (group A), 0.46-0.60 (group B), 0.61-0.75 (group C), and 0.76-0.90 (group D) mEq/l respectively, were followed-up for two years. The mean number of affective episodes and the mean total morbidity during the lithium treatment period were significantly decreased in all groups except group A when compared with the pre-lithium period. Moreover, in group A, the mean total scores on CPRS depressive and manic items during the interepisodic periods were significantly higher than in each of the other groups. As a result of the low scores of patients in group A and the high scores of patients in group D on the side effect checklist, the frequency and intensity of side effects differed significantly among the four groups. These data suggest that, in the prophylactic treatment of bipolar patients, plasma lithium levels should, as a rule, be adjusted to the range 0.46-0.75 mEq/l. Vier Gruppen von bipolaren Patienten, die mit Lithium-Plasmaspiegeln von 0,30-0,45 (Gruppe A), 0,46-0,60 (Gruppe B), 0,61-0,75 (Gruppe C) und 0,76-0,90 (Gruppe D) mEq/l behandelt wurden, wurden zwei Jahre lang beobachtet. Der Mittelwert von affektiven Rezidiven und die mittlere Totalmorbidität im Laufe der Lithiumbehandlungszeit nahmen in allen Gruppen, mit Ausnahme von Gruppe A, im Vergleich mit jenen vor der Lithiumbehandlung, signifikant ab. Die Häufigkeit und Intensität von Nebenwirkungen war in den vier Gruppen signifikant verschieden, was hauptsächlich den hohen Werten in der Gruppe D zuzuschreiben war. Diese Ergebnisse geben Anlaß zur Annahme, daß in der prophylaktischen Behandlung von bipolaren Patienten anfangs Lithium-Plasmaspiegel im Bereich 0,46-0,75 mEq/l eingestellt werden sollten.Keywords
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