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Clinical Trial Summary

Chronic posttraumatic stress disorder (PTSD) is a debilitating disorder and treatment response to pharmacological interventions has been modest for these patients. Chronic elevated anxiety and associated psychophysiological parameters including increased heart rate and alterations in skin conductance are key symptoms of chronic PTSD. Antidepressants, including selective serotonin reuptake inhibitors (SRIs) or norepinephrine-serotonin re-uptake inhibitors are considered treatment of first choice for these patients, however a substantial portion of patients do not respond sufficiently (Zhang and Davidson 2007). Therefore, there is a need to establish novel and effective add-on treatment strategies for these patients. Recently, atypical neuroleptics have received considerable attention since it was shown in multiple controlled and naturalistic trials that these medications are an effective treatment option for patients with PTSD (Davis et al 2006). In chronic PTSD, the psychophysiological responses at baseline and in response to treatment have yet been inadequately studied and may provide novel insight into antidepressant and anxiolytic mechanisms of medications used in the treatment of PTSD. Therefore, in addition to evaluating the antidepressant and anxiolytic effects of paliperidone, a novel atypical neuroleptic, in the treatment of PTSD, we also aim to compare neurophysiological responses at baseline with post-treatment effects in antidepressant-refractory PTSD patients.

Primary Aim 1: Evaluate the anxiolytic and antidepressant effects of paliperidone in patients with PTSD.

Secondary Aim 2: Evaluate the effects of paliperidone on fear conditioned psychophysiological responses (including startle eyeblink, skin conductance, and cardiovascular inter-beat interval) at baseline and after 6 weeks of naturalistic treatment in chronic PTSD patients.


Clinical Trial Description

n/a


Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00766064
Study type Interventional
Source Yale University
Contact
Status Withdrawn
Phase Phase 4
Start date September 2008
Completion date November 2009

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