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Hyperbaric Oxygen Therapy for Veterans With Combat-Associated Posttraumatic Stress Disorder: A Randomized,
Keren Doenyas-Barak1,2,3, Ilan Kutz1, Erez Lang1,2
1Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel.
Hyperbaric oxygen therapy (HBOT) significantly improved combat-associated posttraumatic stress disorder (CA-PTSD) symptoms in veterans. This clinical improvement correlated with enhanced brain connectivity, suggesting HBOT as a viable treatment option.
Area of Science:
- Neuroscience
- Psychiatry
- Hyperbaric Medicine
Background:
- Posttraumatic stress disorder (PTSD) significantly impacts veterans' quality of life.
- Emerging evidence suggests hyperbaric oxygen therapy (HBOT) may offer neuroplastic benefits for PTSD.
- A randomized, sham-controlled trial was needed to rigorously evaluate HBOT for combat-associated PTSD (CA-PTSD).
Purpose of the Study:
- To assess the efficacy of a dedicated HBOT protocol in improving clinical symptoms of CA-PTSD in male veterans.
- To investigate the neurobiological underpinnings of HBOT's effects using resting-state functional magnetic resonance imaging (rsfMRI).
- To determine if HBOT leads to significant reductions in PTSD symptom severity compared to a sham intervention.
Main Methods:
- A randomized, sham-controlled trial involving male veterans (aged 25-60) diagnosed with CA-PTSD.
- Participants received 60 daily sessions of either HBOT (100% oxygen at 2 ATA) or a sham intervention.
- Symptom severity (CAPS-5), depression (BDI-II), anxiety, and stress (DASS-21) were assessed, alongside rsfMRI for brain connectivity analysis.
Main Results:
- The HBOT group showed a significant reduction in CAPS-5 scores (P<.001), unlike the sham group which saw an increase.
- Significant improvements were observed in depression scores (DASS-21 depression domain, BDI-II) for the HBOT group (P=.03, P=.04).
- rsfMRI revealed enhanced functional connectivity in key brain networks (default-mode, central-executive, salience) in the HBOT group compared to sham.
Conclusions:
- A specific HBOT protocol effectively alleviates PTSD symptoms in veterans with CA-PTSD.
- The observed clinical benefits of HBOT are associated with measurable improvements in brain functional connectivity.
- HBOT presents a promising therapeutic avenue for managing CA-PTSD, supported by both clinical and neuroimaging data.
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