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A diver with a deteriorating level of consciousness or with a persisting reduced level of consciousness should also not be recompressed in-water nor should a diver who does not want to go back down, or with a history of oxygen toxicity in the preceding dives, or any physical injury or incapacitation which may make the procedure unsafe.
The body normally attempts to compensate for this homeostatically, but if this fails or is overridden, the blood pH will rise, leading to respiratory alkalosis. The symptoms of respiratory alkalosis include dizziness, tingling in the lips, hands, or feet, headache, weakness, fainting, and seizures.
Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen (O 2) at increased partial pressures.Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and eyes.
Shortness of breath. Chest pain. Fatigue. Dizziness. Fainting. Fever. Irregular heartbeat. Weight gain. Heart palpitations. Heart attack. A heart attack occurs when the blood flow to your heart is ...
Dry eyes (due to loss of corneal moisture). [24] A sense of irritation, discomfort, or pain in the eyes. A tingling sensation behind the eyes or the feeling of grit or sand in the eyes. Excessive tearing that is often made worse by exposure to cold air, wind, or bright lights. Swelling or redness of the eyes. Stare; Lid lag (Von Graefe's sign)
Try a warm drink like hot water and lemon or tea. Stand in a steamy shower to let the humidity help soothe your lungs. Try to avoid environmental irritants like dust or smoke.
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Reflex syncope or neurally mediated syncope occurs when blood vessels expand and heart rate decreases inappropriately leading to poor blood flow to the brain. [1] This may occur from either a triggering event such as exposure to blood, pain, strong feelings, or a specific activity such as urination , vomiting , or coughing .