Clinical GradeFDA Cleared
For Wound Care
Perry Baromedical
Multiplace Series
Hard-Shell Multiplace·2-18+ person
Pressure3 ATA
$150,000 - $400,000+
●●●○Moderate Evidence
Hyperbaric Therapy for Stroke Recovery
Research on reactivating dormant brain tissue and neuroplasticity after stroke — even years after the event.
Key Takeaways
- Efrati et al. (2013) showed significant neurological improvement in post-stroke patients treated with HBOT, even 6–36 months after the event.
- SPECT imaging documented increased brain perfusion in previously dormant areas after HBOT protocols.
- HBOT targets the ischemic penumbra — brain tissue that is damaged but not destroyed — potentially reactivating dormant neurons.
- 795,000 Americans experience a stroke each year, and up to 65% live with persistent disability.
- Benefits have been documented even 1–5 years post-stroke.
- HBOT for stroke recovery is not FDA-approved and not covered by insurance.
What is Stroke Recovery?
Stroke is a leading cause of long-term disability, with approximately 795,000 Americans experiencing a stroke each year. Up to 65% of stroke survivors live with some degree of persistent disability — motor impairment, speech difficulties, cognitive deficits, or functional limitations. Standard post-stroke rehabilitation (physical therapy, occupational therapy, speech therapy) has limited effectiveness for restoring function in chronic stroke patients, particularly beyond the first 6–12 months. HBOT has been studied as a way to reactivate brain tissue in the ischemic penumbra — areas damaged by reduced blood flow but not destroyed — potentially restoring function years after the initial stroke.
How Hyperbaric Therapy Helps Stroke Recovery
After a stroke, the brain has three zones: the infarct core (dead tissue), the penumbra (metabolically impaired but living tissue), and healthy tissue. Standard rehabilitation works with intact neural pathways. HBOT targets the penumbra. At 2.0 ATA, elevated oxygen restores metabolic function to penumbral neurons that have been dormant due to insufficient oxygen. This can reactivate neural circuits thought to be permanently damaged. SPECT imaging studies have documented increased perfusion in previously hypoperfused brain regions after HBOT protocols. The oxygen also promotes angiogenesis, neurogenesis, and synaptic plasticity — creating the biological conditions for the brain to rewire around damaged areas.
Recommended Protocol
Pressure
2.0 ATA
Sessions
40–60 sessions
Duration
60–90 minutes per session
What Does the Evidence Say?
●●●○Moderate Evidence
The Sagol Center in Israel has conducted the most extensive research on HBOT for post-stroke recovery. Efrati et al. (2013) showed that patients 6–36 months post-stroke who received 40 HBOT sessions at 2.0 ATA had significant improvements in motor function, memory, and attention, with corresponding improvements on SPECT brain imaging. Hadanny et al. (2020) demonstrated that even patients treated 1–5 years post-stroke showed meaningful neurological improvement. These are among the strongest evidence for neuroplasticity induction via HBOT. However, the studies are primarily from a single research group, and larger multi-center trials are needed to confirm the findings.
Off-Label Use
Stroke Recovery is not an FDA-approved indication for HBOT. Treatment is considered off-label and is typically not covered by insurance. Consult your physician before starting any HBOT protocol.
Recommended Chambers for Stroke Recovery
Based on the protocol requirements — minimum 2 ATA, Clinical Grade tier. Sorted by clinical credibility score.
Clinical GradeFDA Cleared
For Wound Care
Perry Baromedical
Sigma 34
Hard-Shell Monoplace·1-person
Pressure3 ATA
$50,000 - $90,000
Clinical GradeFDA Cleared
For Wound Care
Perry Baromedical
Sigma 36
Hard-Shell Monoplace·1-person
Pressure3 ATA
$55,000 - $95,000
Clinical GradeFDA Cleared
For Maximum Comfort
Perry Baromedical
Sigma 40
Hard-Shell Monoplace·1-person
Pressure3 ATA
$65,000 - $110,000
Clinical GradeFDA Cleared
For Wound Care
Perry Baromedical
Sigma 40-II
Hard-Shell Multiplace·2-person
Pressure3 ATA
$100,000 - $160,000
Clinical GradeFDA Cleared
For Wound Care
Perry Baromedical
Sigma Elite
Hard-Shell Monoplace·1-person
Pressure3 ATA
$80,000 - $130,000
Frequently Asked Questions
How long after a stroke can HBOT still help?
Research shows benefit even 1–5 years post-stroke. The Sagol Center has treated patients up to 5 years after their stroke with documented improvements on brain imaging and neurological testing. The penumbral tissue can remain in a dormant state for years, potentially responsive to HBOT's oxygen delivery. Earlier treatment is likely better, but late treatment is not futile.
Can HBOT be combined with traditional stroke rehabilitation?
Yes, and this may be the optimal approach. HBOT creates the neurological conditions for neuroplasticity, and physical/occupational/speech therapy then takes advantage of the brain's enhanced capacity to rewire. Some clinics combine HBOT with intensive rehabilitation for synergistic effects.
Does insurance cover HBOT for stroke recovery?
No. Post-stroke recovery is not an FDA-approved indication for HBOT. Insurance does not cover it. Treatment is out-of-pocket at clinic rates ($150–$300/session, $6,000–$18,000 for a 40–60 session protocol). Some patients pursue treatment at the Sagol Center in Israel where the protocols were developed.
Related Conditions
Sources & References
- Efrati et al. (2013) — Hyperbaric oxygen induces late neuroplasticity in post-stroke patients, PLOS ONE
- Hadanny et al. (2020) — HBOT for chronic post-stroke patients, Restorative Neurology and Neuroscience
- American Stroke Association — About Stroke
- Boussi-Gross et al. (2013) — HBOT can improve post-concussion syndrome years after mild TBI, PLOS ONE
Last updated: March 2026. Data sourced from manufacturer specifications, FDA databases, and published clinical research.
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