Clinical OHIP HBOT Guides
Detailed articles covering the core OHIP-covered hyperbaric indications, treatment context, and referral guidance.
air gas embolism
Hyperbaric Oxygen Therapy for Air or Gas Embolism
An air or gas embolism occurs when bubbles of gas enter the circulatory system, physically obstructing blood flow to vital organs—most critically the brain and the heart. Whether caused by surgical complications (iatrogenic), severe trauma, or rapid decompression in diving, an embolism is a catastrophic medical event that requires immediate intervention.
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carbon monoxide poisoning
Hyperbaric Oxygen Therapy for Carbon Monoxide Poisoning
Carbon monoxide poisoning is a medical emergency that often presents as a simple acute episode but carries a profound, long-term threat to the patient’s neurological health. While the initial symptoms—headache, dizziness, nausea—can be managed with standard oxygen, the true clinical value of Hyperbaric Oxygen Therapy (HBOT) lies in its ability to prevent **Delayed Neurological Sequelae (DNS)**.
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gas gangrene
Hyperbaric Oxygen Therapy for Gas Gangrene (Clostridial Myonecrosis)
Gas gangrene, or **Clostridial Myonecrosis**, is one of the most aggressive and devastating medical emergencies in infectious disease. Following trauma or surgery, several species of *Clostridium* (most commonly *C. perfringens*) can infiltrate deep muscle tissue. In an environment devoid of oxygen (anaerobic), these bacteria multiply with terrifying speed, secreting lethal toxins that dissolve muscle mass, destroy red blood cells, and lead to systemic shock.
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crush injury compartment syndrome
Hyperbaric Oxygen Therapy for Crush Injury & Compartment Syndrome
Crush injuries and Compartment Syndrome represent a critical race against time in orthopedic and vascular surgery. When a limb is crushed or subjected to high-impact trauma, the primary injury starts a secondary, more devastating process: a cycle of swelling, increased pressure, and "no-reflow" ischemia that can quickly lead to nerve death and muscle necrosis.
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decompression sickness
Hyperbaric Oxygen Therapy for Decompression Sickness ("The Bends")
Decompression Sickness (DCS), commonly known as "the bends," is the foundation upon which modern hyperbaric medicine was built. Whether occurring in a professional diver in the Great Lakes, a recreational diver on vacation, or a high-altitude pilot, DCS is a complex systemic syndrome caused by the evolution of inert gas bubbles in the blood and body tissues.
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diabetic foot ulcers wound healing
Hyperbaric Oxygen Therapy for Diabetic Foot Ulcers & Complex Wounds
Diabetic foot ulcers represent one of the most severe complications of diabetes. Over time, high blood sugar levels cause significant damage to the vascular system (poor circulation) and the nervous system (neuropathy). When a wound occurs in an environment lacking adequate blood flow, the localized tissue becomes severely hypoxic—starved of the oxygen necessary for repair.
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exceptional blood loss anemia
Hyperbaric Oxygen Therapy for Exceptional Blood Loss (Anemia)
Exceptional blood loss, or acute severe anemia, is a life-threatening medical emergency where the body's red blood cell count falls below the level necessary to sustain vital organ function. While blood transfusions are the standard of care, there are specific scenarios where transfusions are either impossible (multiple alloantibodies), refused due to religious beliefs (e.g., Jehovah’s Witnesses), or are insufficient due to the severity of the hemorrhage.
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intracranial abscess
Hyperbaric Oxygen Therapy for Intracranial Abscess
An intracranial abscess, or brain abscess, is a localized collection of pus and infected material within the brain tissue. These infections are notoriously difficult to treat because the brain is protected by the blood-brain barrier (BBB)—a highly selective semi-permeable membrane that, while shielding the brain from toxins, also severely limits the concentration of antibiotics that can reach the site of an infection.
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necrotizing soft tissue infections
Hyperbaric Oxygen Therapy for Necrotizing Soft Tissue Infections (NSTI)
Necrotizing Soft Tissue Infections (NSTI) are a collection of rare but highly lethal infections that rapidly destroy the skin, fat, and fascia. Whether called necrotizing fasciitis, Fournier’s gangrene, or "flesh-eating" disease, these infections are characterized by their terrifying speed—capable of advancing several centimeters per hour through healthy tissue.
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refractory osteomyelitis
Hyperbaric Oxygen Therapy for Refractory Osteomyelitis
Osteomyelitis, or infection of the bone, is notoriously difficult to treat. Unlike soft tissue infections, bone is a relatively low-vascular tissue with complex minerals that can easily block blood flow. When an infection becomes "refractory," it means that it has failed to respond to standard surgical debridement and prolonged courses of intravenous antibiotics.
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delayed radiation injury
Hyperbaric Oxygen Therapy for Delayed Radiation Injury
Radiation therapy is a cornerstone of modern oncology, but its life-saving precision can sometimes lead to a debilitating long-term consequence: delayed radiation injury. While the cancer is eliminated, the healthy tissue surrounding the treatment area can experience a slow, progressive decline in its blood supply. Over months or years, this leads to what is known in clinical medicine as "Three-H" tissue: tissue that is **Hypovascular** (few blood vessels), **Hypocellular** (few living cells), and **Hypoxic** (critically low on oxygen).
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compromised skin grafts flaps
Hyperbaric Oxygen Therapy for Compromised Skin Grafts and Flaps
Skin grafting and flap surgery are essential components of modern reconstructive surgery—used to repair everything from traumatic injuries to the aftermath of cancer resections. However, even with the most precise surgical technique, the success of a graft or flap depends entirely on the rapid development of a new blood supply (revascularization). When this process fails, the tissue becomes ischemic, congested, and begins to die.
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thermal burns management
Hyperbaric Oxygen Therapy for Thermal Burns
Thermal burns are among the most physiologically complex traumas a human can experience. A severe burn involves not only the immediate destruction of tissue (coagulation) but also a cascading secondary injury characterized by massive fluid loss, localized swelling (edema), and a systemic inflammatory response. If left untreated, the areas of marginal damage—the "Zone of Stasis"—will inevitably die, leading to larger, deeper wounds and a significantly longer recovery.
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sudden sensorineural hearing loss
Hyperbaric Oxygen Therapy for Sudden Sensorineural Hearing Loss (SSHL)
Sudden Sensorineural Hearing Loss (SSHL), or sudden deafness, is a devastating medical emergency defined as a rapid loss of hearing—usually in one ear—that occurs instantly or over a period of up to 72 hours. For many patients, the experience is terrifying, often accompanied by a loud "pop," intense ringing (tinnitus), or severe vertigo.
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