7.4 PTSD: Protective Factors, Crisis Interventions & Evidence-Based Treatments

Protective Factors & Resilience

  • Prime populations for studying resilience

    • First-responders (fire-fighters, police, paramedics) must stay calm during disasters → ideal group for examining protective factors against PTSD.

  • Post-disaster data point

    • 22%22\% of New Orleans fire-fighters met PTSD criteria 55 months after Hurricane Katrina (\approx Feb 2005).

  • Base-rate comparison

    • Overall, emergency workers are less than half as likely to develop PTSD compared with other trauma-exposed civilians.
    • Possible buffers: formal training, repeated preparation, strong sense of purpose/mission.

  • Trait Hardiness

    • Composite of Commitment, Control, Challenge.
    • High scores predict lower PTSD risk.
    • Emergency workers usually score high → partial explanation for lower prevalence.
    • Hardiness scales exist; higher scores correlate with:
    • Persistence in valued goals (Commitment)
    • Belief in influence over outcomes (Control)
    • Framing stress as conquerable (Challenge).

Immediate Community-Level Interventions

  • Goal: Cannot prevent disasters, but can potentially prevent PTSD via rapid post-trauma interventions.
  • FEMA role in U.S.
    • Allocates crisis funds to local health centers during declared disasters.
    • Service range:
    • Intensive one-on-one counseling for victims (e.g., hurricane survivors).
    • Group debriefings for children after school violence.
  • Universal aim: Offer immediate emotional support even if specific techniques differ.

Critical Incident Stress Debriefing (CISD / CIS-D)

  • Structure
    • Single 11–55-hour group session held 11–33 days post-event.
    • Phases: experience-sharing → emotional reaction → psycho-education → assessment & referral.
  • Evaluation difficulties
    • Implemented in chaotic settings → hard to randomize/control research.
  • Mixed evidence
    • No solid proof of PTSD prevention.
    • Some studies suggest potential harm: prompts too much emotion too early.
    • Outsider-led groups (lack of prior relationships) may reduce receptivity.

Cognitive-Behavioral Therapies (CBT) for PTSD

  • Prolonged Exposure (PE)
    • Pioneering study: rape survivors relived trauma across 99 sessions → larger long-term PTSD reduction vs.
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    • Now applied to child sexual abuse, combat, natural disasters, etc.
    • Possible formats:
    • In-vivo confrontation of feared cues.
    • Imaginal reliving in session.
    • Detailed verbal recounting.
  • Imagery Rehearsal Therapy (IRT)
    • Targets chronic nightmares.
    • Client consciously rewrites nightmare script while awake → rehearses preferred ending.
  • Cognitive Restructuring add-ons
    • Challenge trauma-generated beliefs: “No one cares,” “World is hopeless,” etc.
    • Evidence: may enhance PE, but exposure remains the critical active ingredient.
  • Overall efficacy
    • Roughly 50%50\% of treated patients still meet PTSD diagnostic criteria post-treatment → need for even more effective or adjunctive approaches.
    • PE viewed as beginning, not end; deeper meaning-making & emotional processing take prolonged time.

Eye-Movement Desensitization & Reprocessing (EMDR)

  • Origin: Francine Shapiro (1995) noticed rapid horizontal eye movements eased her own anxiety.
  • Procedure
    • Client tracks therapist’s fingers/lights while recalling trauma images.
  • Controversy & Current Understanding
    • Lack of solid mechanism theory.
    • Meta-analyses: Positive outcomes likely stem from exposure component, not eye movements.
    • Eye movements may supply relaxation/grounding but are non-essential.

Pharmacological Notes (briefly referenced)

  • Research examines meds for Acute Stress Disorder (ASD) & PTSD, but detailed findings not covered in transcript.

Diagnostic Distinctions: ASD vs. PTSD (Recap)

  • Common Criteria
    • Exposure to actual/threatened death, serious injury, or sexual violence.
    • Exposure paths:
    • Direct experience.
    • Witnessing in person.
    • Learning events befell close family/friend (violent or accidental).
    • Repeated/extreme exposure to aversive details (first-responder jobs).
  • Temporal Boundary
    • Acute Stress Disorder (ASD): symptoms emerge ≥3\ge 3 days and ≤1\le 1 month post-trauma.
    • Post-Traumatic Stress Disorder (PTSD): onset > 1 month (immediate or delayed).

Practical & Ethical Implications

  • Training & Preparedness
    • Bolstering hardiness and purpose early (e.g., in first-responder academies) may confer primary prevention.
  • Post-event Services
    • Must balance rapid aid with respect for victims’ readiness; forced early debriefing may backfire.
  • Research Ethics
    • Studying interventions during crises necessitates sensitivity to participant distress & consent.
  • Long-term Support
    • PTSD often chronic; sustained resources beyond short-term programs remain an ethical imperative.