More than 11 million people living in the U.S. today have been diagnosed with cancer, and about half of them have received radiation therapy (radiotherapy). While improved radiotherapy techniques have increased treatment precision and reduced side effects caused by radiotherapy, the high doses of radiation used to kill cancer cells may still cause long-term damage to nearby healthy cells in some patients. By helping the blood carry more oxygen to affected areas, hyperbaric oxygen therapy (HBOT) has been proven effective for these patients.
Long-term side effects:
For most cancer patients who experience negative effects from radiotherapy, the side effects are short-term and appear within six months of their last exposure to radiation. Depending on the patient’s sensitivity to radiotherapy, the type and dose of treatment and location of the cancer, patients may experience scarring and narrowing of the blood vessels (intimal proliferation in the arterioles) within the treatment area. This can lead to inadequate blood supply and result in chronic, long-term side effects including death or damage to soft tissues or bones (necrosis, radionecrosis or osteoradionecrosis), poor wound healing and related problems such as life-threatening infections. As many as 10 to 15 percent of patients receiving high doses of radiotherapy will experience these late side effects from radiotherapy, which may be delayed for several months or years after treatment has ended.
Hyperbaric Oxygen Therapy(HBOT) has emerged as an effective treatment for some patients who previously had little hope of recovering from late side effects of radiotherapy. HBOT increases the amount of oxygen in the blood by exposing patients to pure oxygen within a sealed chamber set at pressures greater than the ambient atmosphere, with results that can be measured using a transcutaneous partial pressure oxygen (TCPO2) monitor before and after treatment. Experts believe HBOT helps patients by stimulating growth of new blood vessels following radiation-induced damage.
HBOT has the longest history of success in treating or preventing damage to the jaw bone resulting from radiation treatment, but has also been effectively used to treat radiation-induced damage to the head, neck, chest wall, abdomen and pelvis. For example, HBOT may prevent tooth loss or collapse of the jaw bone in patients previously treated for head or neck cancers, promote successful skin grafts or flaps following reconstructive surgery in patients treated for breast cancer, and eliminate persistent urinary bleeding (radiation cystitis) in patients treated for prostate cancer.
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