Evidence-Based Treatment for Posttraumatic Stress Disorder: Preparing for the Aftermath of Disaster

Transcription

1 Evidence-Based Treatment for Posttraumatic Stress Disorder: Preparing for the Aftermath of Disaster Shawn P. Cahill, Ph.D. Center for the Treatment and Study of Anxiety University of Pennsylvania

2 The Problem of PTSD

3 PTSD A. Exposure to a traumatic event as defined by both A1 and A2 A1. Person experienced, witnessed, or was confronted with an event or events that involved actual or threatened death or serious injury, or threat to the physical integrity of self or others A2. Person s response involves intense fear, helplessness, or horror

4 PTSD (cont d) B. Traumatic event is persistently reexeperienced (need at least one) (1) Recurrent, intrusive, distressing recollections; (2) recurrent distressing dreams; (3) flashbacks; (4) psychological distress in response to reminders; (5) cued physiological reactivity

5 PTSD (cont d) C. Persistent avoidance of stimuli associated with the trauma and numbing of general responsiveness (need at least three) (1) Avoiding thoughts, feelings, conversations about trauma; (2) avoiding activities, people, places, or people that arouse recollections of the trauma; (3) Inability to recall important aspects of the trauma; (4) marked diminished interest or participation in significant activities; (5) feelings of detachment or estrangement from others; (6) restricted range of affect; (7) sense of foreshortened future

6 PTSD (cont d) D. Persistent symptoms of increased arousal (need at least two) (1) Difficulty falling or staying asleep; (2) irritability or outbursts of anger; (3) difficulty concentrating; (4) hypervigilance; (5) exaggerated startle response E. Duration of disturbance is more than one month Acute PTSD: Duration is 1-3 months Chronic PTSD: Duration is > 3 months Specify if delayed onset: Symptom onset > 6 months after trauma

7 Lifetime Prevalence Of Trauma Percent (%) Any One Multiple Men Women Kessler et al., 1995

8 Lifetime Prevalence Of PTSD In The Community 20 Percent (%) Davidson et al., 1991 Breslau et al., 1991 Kessler et al., 1995

9 Prevalence of PTSD by Gender 20 Percent (%) Breslau et al., 1991 Kessler et al., 1995 Resnick et al., 1993 Males Females

10 Rate of PTSD is Influenced by the Nature of the Trauma Percent (%) Disaster Accident Assault Molestation Combat* Rape Trauma PTSD Kessler et al., 1995

11 Natural Recovery: Percentage of Victims with PTSD as a Function of Time 100 Percent (%) Weekly Assessment Rape Victims Non-Sexual Assault

12 Percentage of Victims with PTSD 100 Percent (%) Wk 1 Mo 2 Mos 3 Mos 6 Mos 12 Mos Assessment Rape Victims Non-Sexual Assault

13 Comorbidity with PTSD MD Dys Phobia Soc Anx Agora GAD PD Alc Drug Any Kessler et al., 1995 Women Men

14 PTSD Impairs Quality of Life 60 Percent (%) Not Working Fair or Poor Health Reduced Well Being Physical Limitations Violent Behavior Past Year PTSD Non-PTSD

15 Predictors of PTSD from Meta-analyses analyses Brewin et al. (2000) Trauma severity Lack of social support Additional life stress Gender Age at trauma Race Education Prior trauma Psychiatric history Ozer et al. (2003) Prior trauma Prior psychological adjustment Family history of psychopathology Perceived life threat Posttrauma social support Peritraumatic emotional response Peritraumatic dissociation

16 Epidemiology of 9/11

17 Immediate Reactions Random Digit Dialing, nationally representative sample of 560 US adults between 9/14/01 9/16/01 44% of adults had a substantial stress reaction Predictors: Gender (female), race/ethnicity (non-white), prior mental health problems (yes), distance from WTC (closer), hours of TV viewing (more) Schuster et al., 2001

18 Acute Reactions Random Digit Dialing, representative sample of 1008 adults living south of 110 th St. in Manhattan between 10/16/01 11/15/01 Overall incidence of PTSD was 7.5%, but 20% for those living south of Canal St. Predictors: Gender (female), race/ethnicity (non-white; trend), stressors in past year (more), social support (less), distance of residence from WTC (closer), directly witnessed events (yes), loss of possessions (yes), involved in rescue (yes), lost of job (yes), symptoms of panic attack during or soon after event (yes) Galea et al., 2002

19 Natural Recovery National probability sample of 3496 US adults received Web-based survey 9-23 days after 9/11; a random subsample of 1069 participants living outside of New York City received a second survey two months following 9/11, and third wave (n = 787) was completed six months after 9/11 17% of participants had PTSD two months after 9/11, compared to 5.8% at six months Predictors: Gender (female), prior physician diagnosis of depression or anxiety disorder (yes), marital status (separated), physical illness (yes), severity of exposure to attacks (greater severity), early disengagement of coping efforts (yes) Silver et al., 2002

20 Acute Stress Disorder and the Prediction of PTSD

21 Acute Stress Disorder (ASD) A. Exposure to a traumatic event B. Dissociation either while experiencing or after experiencing the trauma (at least 3): Numbing, detachment, absence of emotional responsiveness Reduction in awareness of one s surroundings Derealization Depersonalization Dissociative amnesia

22 ASD (cont d) C. Reexperiencing the trauma through recurrent images, thoughts, dreams, illusions, flashbacks, distress upon exposure to reminders of the trauma (at least 1) D. Marked avoidance of stimuli that arouse recollections of the trauma E. Marked symptoms of anxiety or increased arousal F. Disturbance causes functional impairment G. Lasts a minimum of 2 days, a maximum of 4 weeks, and occurs within 4 weeks of the trauma

23 Why ASD? Recognize posttraumatic stress can occur in the acute trauma phase Permit the prediction of chronic PTSD ASD emphasizes the role of dissociative symptoms in preventing long-term recovery

24 Criticisms of ASD Insufficient evidence to support the necessity of dissociation in the acute trauma response Questionable practice to introduce a new diagnosis in order to predict another diagnosis Concern about pathologizing transient stress reactions Questionable practice to distinguish between two diagnoses with similar symptom clusters on the basis of duration Harvey & Bryant, 2002

25 ASD and Chronic (6 mos) PTSD Following MVA Percent ASD Chronic PTSD 20 0 Harvey & Bryant, 1998 Full Partial None *Partial ASD and PTSD: Meets criteria for all but one symptom cluster

26 Relationship Between ASD and Chronic PTSD Percent Full PTSD Partial PTSD* None 0 Full ASD Partial ASD* None Harvey & Bryant, 1998 (Table 1) *Partial ASD and PTSD: Meets criteria for all but one symptom cluster

27 Relationship Between ASD and Acute PTSD in College Students Following 9/11 Percent Acute PTSD ASD No ASD Blanchard et al., 2004

28 ASD, PTSD, and Depression in College Students Following /11 Percent ASD PTSD Depression 0 Albany, NY Augusta, GA Fargo, ND Blanchard et al., 2004

29 Predictive Model of PTSD and Depression in College Students Following 9/11 Gender PTSD TV Hours Past Dep ASDS Knew Died Depression Traumas Blanchard et al., 2004 Rep Acts

30 Breakdown of Model: Step 1 PTSD ASDS Depression Rep Acts

31 Breakdown of Model: Step 2 Gender PTSD Past Dep ASDS Depression Traumas Rep Acts

32 Breakdown of Model: Step 3 Gender PTSD TV Hours Past Dep ASDS Knew Died Depression Traumas Rep Acts

33 Breakdown of Model: Step 4 Gender PTSD TV Hours Past Dep ASDS Knew Died Depression Traumas Rep Acts

34 Full Model Gender PTSD TV Hours Past Dep ASDS Knew Died Depression Traumas Rep Acts

35 Conclusion Reaction to mass trauma (e.g., 9/11) similar to reactions to other types of traumas (e.g., rape, physical assault, motor vehicle accidents, etc.) Effect of media exposure and reparative acts

36 Treatment of PTSD

37 Empirically Supported Treatments for PTSD Medications with FDA indication for PTSD Sertraline (Zoloft) Paroxetine (Paxil) Cognitive Behavior Therapy Exposure therapy Stress inoculation training (SIT) Cognitive therapy (CT, CR, CPT) Combinations of exposure therapy with SIT and/or CR EMDR

38 Efficacy of Sertraline Brady et al., 2000 Davidson et al., CAPS CAPS Wk 0 Wk Wk 0 Wk 12 SERT PBO SERT PBO

39 Efficacy of Medication: Paroxetine: Marshall et al., Tucker et al., 2001 CAPS CAPS Wk 0 Wk Wk 0 Wk 12 PAROX (20 mg) PAROX (40 mg) PBO PAR PBO

40 Summary of Medication Substantial placebo effect Significant medication effect Residual symptoms Many non-responders Many responders still experience significant symptoms

41 Cognitive-Behavioral Treatment Anxiety management or stress inoculation training (SIT) Cognitive therapy (CT) Exposure therapy As primary intervention Combined with SIT or CT EMDR

42 Anxiety Management A set of techniques that helps patients manage their anxiety Relaxation training Controlled breathing Positive self-talk and guided imagery Social skills training Distraction techniques (e.g., thought stopping)

43 Cognitive Therapy A set of techniques that help patients change their negative, unrealistic cognitions by: Identifying dysfunctional, unrealistic, or unhelpful cognitions (thoughts and beliefs) Challenging these cognitions Replacing these cognitions with more functional, realistic, or helpful cognitions

44 Exposure Therapy A set of techniques designed to help patients confront their feared objects, situations, memories, and images (e.g., systematic desensitization, prolonged exposure [PE], flooding).

45 EMDR Components Access trauma images and memories Evaluate their aversive qualities Generate alternative cognitive appraisal Focus on the alternative Sets of lateral eye movements while focusing on response

46 Efficacy of CBT for PTSD Marks et al., 1998 Foa et al., 1999 Percent Good End-State Functioning* Post-Tx Percent Good End-State Functioning* Post-Tx FU PE CR PE/CR RLX * > 50% decrease on PSS, BDI < 7, STAI-S < 35. PE SIT PE/SIT WL * PSS-I < 20, BDI < 10, STAI-S < 40.

47 Efficacy of CBT for PTSD (cont d) Resick et al., 2002 Rothbaum et al., 2005 Percent Good End- State Functioning* Post- Tx 6-Mo FU 9-Mo FU Percent Good End- State Functioning* Post-Tx 6- Mo FU PE CPT WL PE EMDR WAIT * PSS < 20, BDI < 10. * > 50% decrease on CAPS, BDI < 10, STAI-S < 40.

48 Efficacy of Treatment for PTSD: Change in PTSD Status Condition N Conditions Mean Completers 95% CI All active Tx % CBT % EMDR % EX % EX+CBT % SC % WL % Bradley et al., 2005

49 Paroxetine vs. PE/SIT CAPS Wk 0 Wk 12 Frommberger et al., 2004 PAR PE/SIT

50 Efficacy of CBT: Summary Several forms of CBT are efficacious Treatment gains generally maintained at follow-up (up to 1 year) Some patients show only a partial or no response (residual symptoms) Combined treatments (PE/SIT, PE/CR) not significantly more efficacious than individual treatments (PE, SIT, CR) CBT and SSRI of comparable efficacy

51 Improving Treatment Outcome

52 Strategies for Improving Treatment Outcome Combining treatments within the same treatment modality (i.e., psychotherapy or medication) Adding SIT or CR to PE (hasn t worked very well) What about combining medications? Extending duration of treatment Combining treatments across treatment modalities SSRI+CBT (e.g., adding CBT to medication)

53 Sertraline Continuation CAPS Open label continuation treatment Double blind acute treatment Wk 0 Wk Londborg et al., 2001

54 Response Status after 36 Weeks of Sertraline Percent Wk 36 Continuous Responder Relapser Eventual Responder Non-Responder

55 Time to Discontinuation Due to Relapse or Clinical Deterioration Kaplan-Meier Survival Probability Weeks Sertraline Placebo Davidson, Pearlstein et al., 2001.

56 Flexible Dosing of Psychotherapy Patients were randomly assigned to PE, PE/CR, or WL Patients who achieved a minimum 70% reduction on self-reported PTSD severity by session 8 terminated at session 9 Others were offered additional sessions, to a total of 12 Foa, Hembree, Cahill et al., 2005

57 Effects of PE and PE/CR in Female Assault Victims 40 PTSD Severity (PSS-I) PE PE/CR WL Pre Post FU

58 Continuation Treatment for Partial Responders 40 PTSD Severity Pre S-8 S-10 S-12 Post 9 Sessions Sessions

59 Augmenting SSRI with CBT: Study Design Sertraline Only (10 weeks, open label treatment) Continue Sertraline Only (5 weeks) Sertraline + PE (5 week, 2x weekly therapy) Rothbaum, Cahill, Foa, Davidson et al. (2006)

60 Overall Effects of SSRI Augmentation by CBT 40 PTSD Severity * * ns * ns 0 Wk 0 Wk 10 Wk 15 Assessment SERT SERT/PE

61 CBT Augmentation for Medication Partial-Responders 40 Phase I Remitters Phase I Partial-Responders PTSD Severity * * ns * * * ns * * ns ns * 0 ns ns Wk 0 Wk 10 Wk 15 Wk 40 Wk 0 Wk 10 Wk 15 Wk 40 Assessment SERT SERT/PE

62 Improving Outcome: Summary Strategies that haven t worked: Combining separately effective CBT programs Strategies that have worked: Extending treatment (SSRI and CBT) Augmenting SSRI with CBT for SSRI partial responders Strategies to be investigated: Augmenting CBT with medication Augmenting SSRI with other medications

63 Treatment of ASD/ Prevention of Chronic PTSD

64 Treatment of ASD/Prevention of Chronic PTSD Little research on treatment of ASD, compared to amount of research on PTSD Extant research on CBT for ASD yields similar results/conclusions as research on CBT for PTSD

65 CBT for Treatment of ASD/ Prevention of PTSD (Bryant et al., 1998, 1999, 2003a, 2005) Percent PTSD Post 6-Mo FU CBT PE CBT+Hyp 1 MVA, IA 3 MBI: MVA, NSA MVA: Natural recovery (6 mos post-trauma) 2 MVA, NSA 4 Civilian trauma SC

66 Use of Evidence-Based Treatments

67 Survey of Psychologists Attitudes and Utilization of Exposure Therapy for PTSD Survey of 852 psychologists from New Hampshire, Vermont, and Texas (San Antonio & Austin) 58 surveys were undeliverable 217 of 794 surveys were returned (27.3%), of which 10 provided no relevant data Final n = 207 Becker, Zayfert, & Anderson (2004)

68 Do Therapists Treat PTSD? # of PTSD Patients Treated < Missing data

69 Are Therapists Trained in the Use of Exposure Therapy? 100 Percent Trained Im Exp for PTSD IV Exp for PTSD Exp for Anx DO

70 Do Therapists Use Exposure Therapy? The Effect of Training Main Sample (n = 207) No Training (n = 148) Trained (n = 59) Patients Treated with Imaginal Exposure None < 50% 50% - 80% > 80%

71 Reasons for not Using Imaginal Exposure to Treat PTSD Percent Endorsing Limited Training Prefers "Individualized" Treatment Fear of Patient Decompensation All participants (n = 207) Trained in IE but not Using (n = 27)

72 Psychotropic Treatment of PTSD: Use Patterns PTSD Depr PTSD/Depr % Usage SSRI TRAZ ATYP NEUR BZ Mellman et al, 2003

73 Stepped Care Model of Intervention for Trauma Survivors CBT Experts Psychiatrists MA therapists Primary care Drs. Drs., nurses, teachers, social workers, clerics PRE-TRAUMA EDUCATION OF THE PUBLIC