Prazosin vs. Paroxetine in Combat Stress Symptoms in OIF/OEF Returnees

NCT ID: NCT00261729

Last Updated: 2009-12-03

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 210 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2004-07-31
• Study Completion Date: 2009-12-31

Brief Summary

Evaluate the efficacy and tolerability of the drug prazosin compared to placebo for combat stress-related nightmares, sleep disturbance and overall function in recently combat-exposed returnees from OIF and OEF. To evaluate the effects of the SSRI paroxetine on behavioral symptoms and overall function in this population.

Detailed Description

Trauma-related nightmares and sleep disruption that follow combat exposure are distressing and frequently treatment resistant symptoms that impair quality of life and overall function. These symptoms closely resemble core nighttime symptoms of posttraumatic stress disorder (PTSD), and are increasingly recognized in returnees from Operation Iraqi Freedom (OIF) and Operation Enduring Freedom (OEF). Prazosin, a generically available brain active alpha-1 adrenergic receptor antagonist, markedly reduced or eliminated combat trauma-related nightmares and sleep disruption in 23 of 25 combat-exposed returnees from OIF at Madigan Army Medical Center (MAMC). The use of prazosin in OIF returnees was based on clinical efficacy of prazosin for trauma-related nightmares, sleep disturbance, and overall function in Vietnam combat veterans with chronic PTSD. The only drugs FDA approved for PTSD are the selective serotonin reuptake inhibitors (SSRIs) sertraline and paroxetine. However, SSRI effectiveness in combat trauma PTSD, especially for nighttime symptoms, remains questionable.

This is a placebo-controlled clinical trial of prazosin vs. the SSRI paroxetine for combat trauma-related nightmares, sleep disturbance, and overall posttraumatic stress disorder (PTSD) clinical severity in OIF/OEF returnees. Both neurobiologic considerations and our preliminary clinical treatment data provide support for the proposed trial. Preclinical and clinical studies suggest a role for increased central nervous system (CNS) adrenergic outflow and/or responsiveness in PTSD pathophysiology. Possible mechanisms include alpha-1 adrenergic receptor-mediated effects on sleep physiology, corticotropin releasing hormone secretion, and disruption of cognitive processing.

Here we propose a double-blind, placebo-controlled parallel group 12 week clinical trial of prazosin vs. paroxetine to test the following hypotheses:Hypothesis 1. Prazosin will be more effective than paroxetine or placebo for reducing frequency and intensity of combat trauma-related nightmares (as measured by the "distressing dreams" item of the Clinician Administered PTSD Scale [CAPS]).

Hypothesis 2. Prazosin will be more effective than paroxetine or placebo for improving sleep quality (as measured by the Pittsburgh Sleep Quality Index [PSQI]).

Hypothesis 3. Prazosin will be more effective than paroxetine or placebo for improving overall clinical status (as measured by the Clinical Global Impression of Change [CGIC]).

Hypothesis 4. Prazosin will be better tolerated than paroxetine as measured by days retained in the study and frequency of adverse events. Primary outcome measures will assess trauma-related nightmares, sleep disturbance and change in global clinical status: these will include the CAPS [59] Recurrent Distressing Dreams item, the PSQI (60) and the CGIC (58) score. Secondary outcome measures will include total CAPS score, the CAPS subscale scores (Reexperiencing/ Intrusions, Avoidance/Numbing, and Hyperarousal), the Nightmare Frequency Questionnaire (NFQ), Insomnia Severity Index, and measures of depressive signs and symptoms, quality of life, and number of study days completed.

Conditions

Sleep Disorders; Stress Disorders, Post-Traumatic

Keywords

Paroxetine; Prazosin; Sleep Disorders; Stress Disorders, Post-Traumatic

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

1

paroxetine

Group Type: EXPERIMENTAL

Paroxetine

Intervention Type: DRUG

paroxetine 20 mg

2

placebo

Group Type: PLACEBO_COMPARATOR

placebo

Intervention Type: DRUG

placebo capsules

3

prazosin

Group Type: EXPERIMENTAL

Prazosin

Intervention Type: DRUG

Prazosin

Interventions

Paroxetine

paroxetine 20 mg

Intervention Type: DRUG

Prazosin

Prazosin

Intervention Type: DRUG

placebo

placebo capsules

Intervention Type: DRUG

Other Intervention Names

Paxil

Eligibility Criteria

Inclusion Criteria

• Hazardous duty in Iraq or Afghanistan with the US Armed Forces during Operations Iraqi Freedom and Operation Enduring Freedom
• Exposure to at least a moderate level of combat (>5 on Revised Combat Exposure Scale)
• Good general medical health
• Stable dose of non-excluded medications for at least 4 weeks prior to randomization
• >5 on CAPS recurrent distressing dreams item
• >5 on CAPS difficulty falling or staying asleep item

Exclusion Criteria

• Acute or significant chronic medical illness, preexisting hypotension or orthostatic hypotension, pancreatitis, gout, M ni re's disease, benign positional vertigo, narcolepsy, or any other unstable medical condition.
• Women of childbearing potential with either positive pregnancy test or refusal to use effective birth control method will be excluded.
• Lifetime schizophrenia, schizoaffective disorder, bipolar disorder, psychotic disorder or any DSM-IV cognitive disorder, current delirium, substance dependence disorder within 3 months of the study, severe psychiatric instability or severe situational life crises, including evidence of being actively suicidal or homicidal, or any behavior which poses an immediate danger to patient or others.
• Allergy or previous adverse reaction to prazosin or other alpha-1 antagonist or paroxetine or any other SSRI, no concurrent use of another alpha-1 antagonist agent, no concurrent use an antidepressant (other than trazodone prescribed for sleep).

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

US Department of Veterans Affairs

FED

Sponsor Role: lead

Responsible Party

Department of Veterans Affairs

Principal Investigators

Elaine Peskind, MD

Role: PRINCIPAL_INVESTIGATOR

VA Puget Sound Health Care System, Seattle

Locations

VA Puget Sound Health Care System, Seattle

Seattle, Washington, United States

Countries

United States

References

Raskind MA, Dobie DJ, Kanter ED, Petrie EC, Thompson CE, Peskind ER. The alpha1-adrenergic antagonist prazosin ameliorates combat trauma nightmares in veterans with posttraumatic stress disorder: a report of 4 cases. J Clin Psychiatry. 2000 Feb;61(2):129-33. doi: 10.4088/jcp.v61n0208.

Reference Type: BACKGROUND

PMID: 10732660 (View on PubMed)

Peskind ER, Bonner LT, Hoff DJ, Raskind MA. Prazosin reduces trauma-related nightmares in older men with chronic posttraumatic stress disorder. J Geriatr Psychiatry Neurol. 2003 Sep;16(3):165-71. doi: 10.1177/0891988703256050.

Reference Type: BACKGROUND

PMID: 12967060 (View on PubMed)

Raskind MA, Peskind ER, Kanter ED, Petrie EC, Radant A, Thompson CE, Dobie DJ, Hoff D, Rein RJ, Straits-Troster K, Thomas RG, McFall MM. Reduction of nightmares and other PTSD symptoms in combat veterans by prazosin: a placebo-controlled study. Am J Psychiatry. 2003 Feb;160(2):371-3. doi: 10.1176/appi.ajp.160.2.371.

Reference Type: BACKGROUND

PMID: 12562588 (View on PubMed)

Raskind MA, Thompson C, Petrie EC, Dobie DJ, Rein RJ, Hoff DJ, McFall ME, Peskind ER. Prazosin reduces nightmares in combat veterans with posttraumatic stress disorder. J Clin Psychiatry. 2002 Jul;63(7):565-8. doi: 10.4088/jcp.v63n0705.

Reference Type: BACKGROUND

PMID: 12143911 (View on PubMed)

Taylor FB, Martin P, Thompson C, Williams J, Mellman TA, Gross C, Peskind ER, Raskind MA. Prazosin effects on objective sleep measures and clinical symptoms in civilian trauma posttraumatic stress disorder: a placebo-controlled study. Biol Psychiatry. 2008 Mar 15;63(6):629-32. doi: 10.1016/j.biopsych.2007.07.001. Epub 2007 Sep 14.

Reference Type: RESULT

PMID: 17868655 (View on PubMed)

Raskind MA, Peskind ER, Hoff DJ, Hart KL, Holmes HA, Warren D, Shofer J, O'Connell J, Taylor F, Gross C, Rohde K, McFall ME. A parallel group placebo controlled study of prazosin for trauma nightmares and sleep disturbance in combat veterans with post-traumatic stress disorder. Biol Psychiatry. 2007 Apr 15;61(8):928-34. doi: 10.1016/j.biopsych.2006.06.032. Epub 2006 Oct 25.

Reference Type: RESULT

PMID: 17069768 (View on PubMed)

Other Identifiers

0026

Identifier Type: -

Identifier Source: secondary_id

MHBA-025-05S

Identifier Type: -

Identifier Source: org_study_id

NCT00240201

Identifier Type: -

Identifier Source: nct_alias