Nicotine counteracts the attempts to deliver oxygen through hyperbaric oxygen therapy. Nicotine patches must be removed 2 hours before treatment. Nicotine can; Restricts the blood supply to fingers and toes Irritate mucous membranes and may make it difficult to equalise your ears and sinuses, which can result in damage to you middle or inner ear. Carbon monoxide from cigarettes introduces carbon monoxide into the blood steam, which reduces the oxygen carrying capacity of your haemoglobin in your red blood cells. Based on the above, it is incompatible for patients to be smoking when they are undergoing treatment. Long term smokers are strongly advised to stop smoking during treatment.

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