Posttraumatic Stress Disorder Clinical Trial
Official title:
Prevention of PTSD With Early Hydrocortisone Treatment: Pilot
People experience a wide range of outcomes following a traumatic event. Although rates differ depending on type of trauma, 20-60% of trauma victims may develop posttraumatic stress disorder (PTSD). However, not all trauma victims develop PTSD. Previous research has found that trauma victims who develop PTSD excrete lower levels of urinary cortisol immediately after a trauma than victims who do not develop PTSD. Other research has suggested that increasing levels of cortisol may protect against the development of PTSD in patients such as yourself- but this has not yet been examined. Cortisol is a naturally occurring hormone in your body, and the present study is designed to test whether increasing cortisol levels can protect against or decrease symptoms of PTSD. Participants in this study will be randomly assigned to one of two treatment groups. Participants will receive either hydrocortisone (20mg, twice per day) or a placebo (a sugar pill) for 10 days with a six-day taper. There is an equal chance of being in either treatment group, and neither the participant nor the experimenters will know which treatment was received (except in case of an emergency).
Posttraumatic stress disorder (PTSD) is the fourth most common psychiatric disorder and is
estimated to affect more than ten million American children and adults at some point in
their lives. Although a number of pre-, peri-, and acute phase post-trauma variables (e.g.,
prior trauma history, subjective life threat, injury) have been shown to increase one's risk
of developing PTSD, initial psychological reaction to a traumatic event is an imperfect
predictor of subsequent diagnosis. In addition, early psychological interventions have
generally proven ineffective, and in some cases, detrimental with regards to subsequent
symptomatology. In light of this, researchers have recently begun to examine possible
pharmacological interventions that could be administered in the acute phase of responding to
trauma to prevent or reduce the severity of subsequent post-traumatic stress.
Biopsychological research has frequently (but not always) indicated that patients with PTSD
excrete lower levels of cortisol than similarly-exposed trauma victims who do not develop
PTSD. Further, recent research has shown that lower cortisol levels present soon after a
trauma are associated with increased risk for developing PTSD symptoms. These results
suggest that higher levels of cortisol during and immediately after a traumatic event may
buffer the development of PTSD symptoms. In addition, preliminary findings have suggested
that exogenously elevating patients' levels of cortisol during and immediately following
trauma results in decreased incidence of PTSD. However, these data were collected on
relatively small samples of trauma patients with confounding medical conditions (e.g.,
shock, cardiac surgery, or paralysis). A randomized controlled trial (RCT) is necessary to
determine the efficacy of early cortisol administration at buffering the development of
post-traumatic stress in a heterogeneous trauma sample.
Prior to conducting a large-scale RCT, it is necessary to pilot test the efficacy of early
cortisol treatment at reducing or preventing PTSD symptoms in a representative sample of
heterogeneous trauma victims. The proposed research is designed to examine the efficacy of
hydrocortisone (commercially-available cortisol) in preventing post-traumatic stress in a
small-scale, randomized, double-blind trial. More specifically, incidence of PTSD and
comorbid disorders (i.e., mood, anxiety and substance abuse/dependence disorders), severity
of symptoms, health-related quality of life, and hormonal correlates of distress will be
prospectively examined in trauma victims who are randomly assigned to receive either a
course of hydrocortisone or placebo within 12 hours of the traumatic event. As psychological
and physiological reactions to trauma may develop over a number of months post-trauma,
prospective follow-up will allow us to examine the efficacy of cortisol administration at
reducing both early as well as delayed development of symptoms. The proposed research will
provide pilot data and effect size estimates for a subsequent large-scale trial, should
pilot results be promising.
Specific objectives of the proposed research include:
1. Examination of the effects of early (within 12 hours of trauma) cortisol administration
on subsequent symptoms of PTSD in trauma victims. Specifically, victims admitted to the
Level 1 trauma unit of a local hospital will be randomly assigned to receive
double-blind, low-dose cortisol (20mg, twice daily: bid) or placebo for ten days plus a
6-day taper period. Symptoms of psychopathology will be measured at 1- and 3-months
post-trauma. Secondary analyses will examine the effects of cortisol on disorders
commonly comorbid with PTSD (i.e., anxiety, mood, and substance abuse/dependence
disorders) and on health-related quality of life.
2. Examination of the extent to which early cortisol administration influences the
relationship between preexisting and trauma-related factors and psychophysiological
responses to trauma. In particular, as lifetime incidence of psychopathology, prior
trauma exposure, and injury severity have been associated with increased risk for PTSD,
we will examine whether this relationship is weakened in patients receiving the
cortisol regimen. Due to budgetary constraints of the R34 mechanism and the exploratory
nature of the proposed research, we will not be able to recruit enough participants to
sufficiently examine this objective, and it is thus considered a secondary aim.
However, results will be used to strengthen and guide the design of a subsequent R01
proposal.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention
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