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Hyperbaric care · Scottsdale & Glendale, AZ

Hyperbaric oxygen therapy for decompression illness & gas embolism

When gas bubbles interrupt circulation and injure tissue, hyperbaric oxygen therapy can play a decisive role in treatment and recovery.

Decompression sickness and serious arterial gas embolism are established indications for HBOT. Recompression and oxygen address the bubbles themselves while supporting oxygen delivery to affected tissues.3, 4

After emergency evaluation and stabilization, RX-O2 offers a place to review your history, discuss persistent symptoms, and explore whether additional prescribed hyperbaric care belongs in your recovery plan.

Online appointments are for medically stable patients and planned care. Emergency recompression requires a facility equipped for your condition.

Illustration of two scuba buddy divers swimming in blue ocean water
Knowledge for the next chapter of recoveryIllustrative diving scene. Your treatment and return-to-diving decisions deserve an individual medical review.
Physician-led careIndividual evaluation and oversight
FDA-cleared chambersPrescription-level hard-shell systems
100% medical oxygenDelivered through a mask or hood
NHSA-certified techsTrained hyperbaric support

Two related conditions, one important treatment

What is decompression illness?

Decompression illness is an umbrella term that includes decompression sickness and arterial gas embolism related to diving. Gas embolism can also occur during medical procedures.3, 4, 16

Decompression sickness · DCS

Gas comes out of solution

As pressure falls after a dive or other compressed-air exposure, dissolved inert gas can form bubbles in tissues and blood. Symptoms may involve joints, skin, the spinal cord, the inner ear, or other organs. DCS can occur even after a dive that appeared to follow accepted limits.3, 16

Arterial gas embolism · AGE

Gas obstructs arterial circulation

Gas entering arteries can interrupt blood flow to the brain or other vital organs. During diving, this can follow lung overexpansion on ascent. Procedure-related gas embolism has other routes of entry and requires immediate involvement of the treating emergency or hospital team.4

Not every small venous air bubble has the same significance. A medical team must determine the type of embolism, its effects, and the appropriate treatment.4

Why pressure and oxygen matter

HBOT targets the injury in several ways

Recompression reduces bubble volume

Increased ambient pressure makes gas bubbles smaller, helping address the obstruction and tissue effects that drive these injuries.3, 4

Oxygen supports gas elimination

Breathing oxygen under pressure helps remove inert gas from the body and supports the resolution of decompression-related bubbles.3

More oxygen reaches vulnerable tissue

HBOT increases oxygen dissolved in plasma, helping supply tissues whose circulation has been impaired. That is particularly important when the nervous system is involved.3, 4

Treatment is prescribed to match the diagnosis, severity, response, and monitoring needs. A routine wellness session or standard package duration should never be substituted for an emergency recompression protocol.

The evidence behind treatment

Research supports prompt treatment and thoughtful follow-up

Clinical recommendations recognize HBOT as a central treatment for decompression sickness and arterial gas embolism. Cohort studies help explain recovery, timing, and the needs of patients with continuing symptoms.3, 4

Literature checked
September 14, 2026

Decompression illness · 2024

Encouraging outcomes in a 306-diver cohort

93% had no or minor residual symptoms

Blake and colleagues · Retrospective hospital cohort

Among 306 divers treated in Townsville, Australia, 93% had a “good outcome,” defined as no symptoms or only minor symptoms remaining. Initial severity was an important influence on recovery.6

What this means: There is a strong clinical reason to pursue appropriate treatment. The figure includes minor residual symptoms and is not a 93% complete-cure rate. Most divers initially had mild illness, and there was no untreated comparison group.

Read the 2024 study

Cerebral arterial gas embolism · 2023

Earlier HBOT was associated with better outcomes

Fakkert and colleagues · Systematic review and individual patient data meta-analysis

A review of 10 observational studies involving 263 patients with procedure-related cerebral arterial gas embolism found that patients with favorable outcomes received HBOT sooner. An individual patient analysis also linked shorter delays with better outcomes after adjustment for severity.5

What this means: Early coordination with an appropriate hyperbaric service matters. The findings support urgency; they do not establish a safe waiting period or guarantee a particular result.

Read the 2023 analysis

Delayed decompression treatment · 2022

A delay does not make assessment pointless

Sokolowski and colleagues · 546-patient retrospective cohort

A Finnish study found that patients treated more than 48 hours after decompression illness could still have favorable outcomes. Final outcomes were similar across its timing groups, while shorter delays were associated with fewer recompression treatments.7

What this means: If symptoms were missed or access was difficult, seek expert assessment rather than assuming nothing can be done. Differences between patients limit comparisons, and the study does not show that waiting is safe. Its findings do not establish benefit for symptoms persisting months or years later.

Read the 2022 study

More research and clinical guidance

2026: Inner-ear decompression sickness and recovery

A systematic review brought together 24 reports involving 539 cases treated with HBOT. Persistent hearing or balance abnormalities were common, including abnormalities detected by testing when symptoms were less apparent. The findings support careful follow-up, objective testing, and rehabilitation when indicated.9

This review describes treated cases; it does not provide a controlled estimate of HBOT’s effect. New dizziness or hearing changes after diving still require urgent medical assessment.

Read the 2026 systematic review
2026: What technical-diving injuries tell us about follow-up

A French study of 124 technical-diving accidents found that decompression sickness accounted for most cases. Musculoskeletal and inner-ear injuries featured prominently among unfavorable outcomes. The study reinforces the value of reassessing persistent joint, hearing, or balance problems instead of assuming recovery is complete.11

This was an injury cohort, not a trial comparing HBOT with no treatment.

Read the June 2026 study
2025: Current recommendations for DCS and gas embolism

These clinical recommendations describe HBOT as definitive treatment for decompression sickness and a central treatment for arterial gas embolism. They explain diagnosis, oxygen first aid, and the importance of matching hyperbaric treatment to the clinical situation.3, 4

Decompression sickness recommendations · Air and gas embolism recommendations

2025: Recovery after procedure-related cerebral air embolism

A prospective cohort followed 22 patients after HBOT for cerebral air embolism. Recovery varied, and ongoing disability and quality-of-life concerns remained important for some survivors. The study supports continued attention to rehabilitation and daily function after the emergency phase.12

There was no untreated comparison group. Follow-up needs do not automatically mean that additional HBOT will help every patient.

Read the prospective follow-up study
2022: Timing and spinal cord decompression sickness

In an analysis of 195 divers with spinal cord DCS, initial severity and longer time to recompression were associated with incomplete recovery, with the timing relationship most apparent in severe cases. This reinforces early emergency action when weakness, altered sensation, or walking difficulties appear.10

Read the spinal DCS study
2015: Additional evidence on delayed recompression

A retrospective comparison included 76 divers treated at least 48 hours after DCS and 128 treated earlier. Complete and partial recoveries occurred in the delayed group, supporting assessment even after a missed early opportunity.8

This is not evidence that postponing treatment is equivalent to prompt care, nor proof that long-standing symptoms will respond.

Read the delayed-recompression study

Keep exploring the evidence

These studies complement established treatment recommendations. Outcomes depend on injury type, initial severity, time to appropriate care, and other medical factors. Newer papers are useful when their design and patient population match the question being asked.

See the newest PubMed publications on HBOT, DCS, and gas embolism
Illustration of a scuba mask, fins, and mesh gear bag on a dive-boat deck
Diving illustration. Returning to the water starts with an individual medical assessment.

After emergency treatment

Make a plan for what comes next

Persistent numbness, fatigue, joint discomfort, hearing changes, balance problems, or limitations in daily activities deserve attention. The next step is understanding what remains, what may improve with rehabilitation, and whether additional prescribed HBOT is appropriate.

At RX-O2, a consultation can bring your treatment history and current goals together. We can review your emergency records, clarify the role of hyperbaric care, and coordinate with the clinicians responsible for your recovery. A diving-medicine specialist may be needed for fitness-to-dive decisions.

Additional HBOT is an individual decision. Research on treatment delayed by hours or days should not be treated as proof of benefit for every chronic symptom. New or worsening neurological or breathing symptoms require urgent reassessment.7, 8, 12

You do not need all the answers before contacting us. Bring your questions, your current care plan, and what you hope to understand. A consultation can help you weigh potential benefits, uncertainty, practical needs, and costs before making a treatment decision.

The RX-O2 difference

Experienced hyperbaric care in the Phoenix area

Our Scottsdale and Glendale facilities combine medical oversight, trained technicians, and time to understand your recovery goals.

Medical Director Marvin A. Borsand standing beside an RX-O2 hyperbaric chamber
Marvin A. Borsand, DO, FACOS, FACCS, HCC · RX-O2 Medical Director.

A physician-led team

Medical Director Marvin A. Borsand leads clinical oversight. A licensed medical provider evaluates suitability and prescribes treatment when appropriate, with attention to your hospital course and ongoing specialist care.

FDA-cleared hard-shell chambers

Our prescription-level systems support medically selected treatment settings. Emergency diving-injury care requires case-specific protocols and capabilities; emergency services must confirm the receiving facility.

100% medical-grade oxygen

You breathe oxygen through a dedicated mask or hood while the chamber is pressurized with air. Staff monitor your treatment and communication needs.

NHSA-certified hyperbaric technicians

Our technicians are certified through the National Hyperbaric Safety Association and trained in chamber operations, monitoring, and emergency procedures.

For medically stable patients

Make your first consultation useful

01

Bring the full timeline

Include dive profiles or the procedure involved, symptom onset, oxygen first aid, hospital records, recompression reports, imaging, and discharge instructions.

02

Describe your current function

Tell us about walking, work, concentration, hearing, balance, sleep, and pain. Bring your medication list and the names of the clinicians following your recovery.

03

Discuss a coordinated plan

A licensed provider assesses suitability, safety, goals, and whether HBOT is indicated. Ask about rehabilitation, specialist follow-up, treatment costs, and travel restrictions.

Planning your care

Coverage and treatment costs

Medicare’s national HBOT coverage determination lists decompression illness and gas embolism. Coverage still depends on medical necessity, documentation, your health plan, and the treating facility’s billing arrangements.13

Ask RX-O2 about current payment options and whether your plan can reimburse care here. A covered diagnosis does not guarantee payment at every clinic, and follow-up symptoms do not automatically qualify for another course.

View RX-O2 pricing and packages for planned care. Emergency recompression should be arranged through emergency services, not purchased as a routine package.

Questions we can help you work through

Decompression illness & gas embolism FAQs

Can I book online if I think I have the bends?

No. Suspected DCS requires emergency assessment. Call emergency services, then DAN at +1 919-684-9111. Online RX-O2 appointments are for medically stable patients seeking planned consultation or follow-up.1, 2

Why is HBOT used instead of surface oxygen alone?

Surface oxygen is valuable first aid. HBOT adds recompression and higher oxygen delivery, addressing bubbles and oxygen-starved tissue in ways surface oxygen alone cannot. Improvement with first aid does not establish that the injury has resolved.3, 4

Is it too late if symptoms began yesterday or earlier?

Do not decide that on your own. Delayed-treatment studies show that meaningful recovery can still occur, so urgent expert assessment remains worthwhile. They do not justify waiting or predict the value of treatment for symptoms present for months or years.7, 8

Can gas embolism happen without a diving accident?

Yes. Gas can enter circulation during some medical procedures or injuries. Sudden stroke-like symptoms, collapse, or breathing difficulty during or after a procedure require immediate emergency care and notification of the treating team. Clinicians determine whether HBOT is appropriate.4

Does normal imaging rule out arterial gas embolism?

No. Gas may no longer be visible when imaging is performed. The clinical history, symptoms, and examination are important, and the emergency team should not wait for visible bubbles to consider the diagnosis.4

Will I need more than one hyperbaric treatment?

Possibly. Treatment length, pressure, repeat sessions, and monitoring depend on the diagnosis and clinical response. After stabilization, persistent symptoms require reassessment before additional treatment is prescribed. A standard package is not a substitute for that decision.3, 4

When can I fly, drive over mountains, or dive again?

Get individualized advice from the team managing your injury before altitude travel or another dive. Clearance after DCI differs from routine advice for symptom-free recreational divers. Feeling better does not by itself establish fitness to dive; hearing, balance, neurological, or lung assessment may be needed.1, 9, 16

What risks are reviewed before HBOT?

Possible effects include ear or sinus pressure injury, temporary vision changes, and confinement anxiety. Oxygen-related seizures and lung injury are uncommon but important risks. Untreated pneumothorax is a contraindication. Staff review medications, lung and ear history, and chamber fire-safety requirements; unapproved electronics and battery-powered items are not brought into treatment.14, 15

Can RX-O2 help with persistent symptoms after hospital treatment?

For medically stable patients, a consultation can help assess whether additional prescribed HBOT is appropriate and what other follow-up may be useful. Bring your hospital and recompression records. The aim is a coordinated recovery plan, with realistic goals and the right specialists involved.

Where are your Phoenix-area clinics?

RX-O2 has locations in Scottsdale and Glendale, Arizona. Use the clinic links below for directions and contact details. If you are recovering from DCI, confirm travel restrictions with your treating team before planning a visit.

Local care, two Valley locations

Explore HBOT in Scottsdale or Glendale

Looking for a hyperbaric consultation near Phoenix? RX-O2 offers two locations for patients across the Valley. Call the clinic closest to you for appointment availability and help planning repeat visits.

Your next step after stabilization

Bring your recovery questions to RX-O2

Let’s review your history, understand what you want to regain, and discuss whether hyperbaric care can support your next steps.

New or worsening symptoms need emergency assessment. This booking link is for planned care.

Sources & further reading

  1. Divers Alert Network. Chapter 4: Treating Decompression Sickness.
  2. Divers Alert Network. Emergency Assistance.
  3. Moon RE et al. (2025). Decompression Sickness: Current Recommendations.
  4. Moon RE et al. (2025). Hyperbaric Treatment of Air or Gas Embolism: Current Recommendations.
  5. Fakkert RA et al. (2023). Early hyperbaric oxygen therapy is associated with favorable outcome in patients with iatrogenic cerebral arterial gas embolism: systematic review and individual patient data meta-analysis of observational studies.
  6. Blake DF et al. (2024). Divers treated in Townsville, Australia: worse symptoms lead to poorer outcomes.
  7. Sokolowski SA et al. (2022). Delayed treatment for decompression illness: factors associated with long treatment delays and treatment outcome.
  8. Hadanny A et al. (2015). Delayed recompression for decompression sickness: retrospective analysis.
  9. Stokes RJ et al. (2026). Outcomes in the treatment of inner ear decompression sickness with hyperbaric oxygen therapy, a systematic review.
  10. Andre S et al. (2022). Influence of prehospital management on the outcome of spinal cord decompression sickness in scuba divers.
  11. Gouin E et al. (2026). Technical diving accidents in France: a 15-year retrospective study reporting a high prevalence of musculoskeletal decompression sickness.
  12. Fakkert RA et al. (2025). Functional outcome and quality of life after iatrogenic cerebral air embolism treated with hyperbaric oxygen: a prospective cohort study.
  13. CMS. National Coverage Determination 20.29: Hyperbaric Oxygen Therapy.
  14. Heyboer M III et al. (2017). Hyperbaric Oxygen Therapy: Side Effects Defined and Quantified.
  15. FDA (August 25, 2025). Follow Instructions for Safe Use of Hyperbaric Oxygen Therapy Devices: Letter to Health Care Providers.
  16. CDC Yellow Book. Scuba Diving: Decompression Illness and Other Dive-Related Injuries.

This selected overview includes clinical recommendations, observational studies and reviews, and emergency, safety, and coverage guidance. Observational outcomes describe treated groups and cannot by themselves establish how much recovery was caused by HBOT.

Literature checked September 14, 2026. The PubMed link opens a current search; new publications require review before findings are added to this page. Educational information does not replace diagnosis, emergency care, or an individual treatment plan.