Discontinuation vs. continuation treatment with neuroleptics for a better long-term outcome

Abstract

Background

Long-term functional outcome of dose-reduction/discontinuation strategies in first-episode psychosis (FEP) has not been studied before. The present study compared 7-year outcome of an early antipsychotic dose-reduction/discontinuation (DR) strategy with maintenance treatment (MT). Primary outcome was (symptomatic and functional) recovery; relapse rates, functional and symptomatic remission were secondary outcomes.

Methods

FEP patients (n = 128) symptomatically remitted for 6 m during their first treatment year who completed an 18 months trial comparing MT and DR were followed-up at 7 years. Symptomatic remission criteria were adopted from Andreasen et al., functional remission criteria were based on a functioning scale. Recovery was defined as meeting both criteria sets. MT or DR strategy, and baseline parameters were entered in a logistic regression analysis with symptom and functional remission and recovery at 7-years follow-up as dependent variables.

Results

One hundred and three patients consented to participate. DR-patients showed twice the recovery-rate of MT-patients (40% against 18%), odds ratio 3.5 (P = .014). Symptomatic remission-rates were equal (69% and 67%). Better DR recovery-rates were attributable to higher functional remission-rates (46% vs. 20%) in DR. Predictors of recovery were DR, baseline living together and less severe negative symptoms. During the last 2 years of follow-up the mean daily dose in haloperidol equivalents was 2.20 mg in DR vs. 3.60 mg in MT (P = .031).

Relapse rates were initially higher in DR but leveled at 3 years; 61.5% relapsed in DR and 68.6% in MT in 7 years.

Conclusion

DR of antipsychotics during early stages of remitted FEP significantly improved 7-years outcome in terms of recovery and functional remission compared to maintenance treatment. Though initially relapse rates in GD were higher, these equalled those in MT from 3 years to the end of the study. While the necessity of immediate antipsychotic treatment in FEP and positive symptoms relapse is robustly demonstrated in a great number of studies, this study suggests that we are faced with a dilemma concerning the drawbacks of long-term maintenance antipsychotic treatment on functional capacity. Though antipsychotic discontinuation appears only feasible without relapse in a substantial minority of patients, guided dose-reduction as far as positive symptoms remain subsided and allow it, appears a feasible strategy in view of functional recovery, doing justice to both sides of the dilemma.

Disclosure of interest

The authors have not supplied their declaration of competing interest.