Carbon dioxideharm to human body is mainly stimulate the respiratory center, shortness of breath, smoke inhalation volume increase ,and will cause headache ,confusion symptoms .Carbon dioxide itself is not toxic ,but when the carbon dioxide in the air more than normal levels ,to the human body harmful effect .So in crowded places, should pay attention to ventilation .In some may contain carbon dioxide gas places before, should check the content of carbon dioxide ,to see if it will be a threat to human health . carbon dioxide in air volume fraction ( % ) and its effects on the human body after 2.5 hours without any symptoms 3 without conscious breathing frequency increased 4 local irritation 6 respiratory volume increased 8 dyspnea 10 unconsciousness ,soon led to the death of 20 after a few seconds paralysis ,cardiac arrest \r carbon dioxide poisoning \r . Technology-def { height: 1% ;margin: 00 30px 0 ;position: relative ;zoom: 1 ;padding-top: 5px} . 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Tech-foot span {float: ri Ght ;margin-right: 10px} \r technology definitions Chinese name English Name :carbon dioxide poisoning :carbon dioxide poisoning definition :divers diving in the process of high pressure carbon dioxide inhalation or body to produce carbon dioxide can be discharged in time ,resulting in diseases that are caused by retention of carbon dioxide .Application of cardio-thoracic surgery :Marine Science and Technology (grade school department ) ;marine technology ( level two – Section) ;underwater marine technology ( level three – Branch ) the content by the national science and Technology Terminology Committee announced directory \r principle poisoning clinical manifestations and treatment method for routine treatment of hyperbaric oxygen in the treatment of toxic principle clinical manifestations and treatment method for routine treatment of hyperbaric oxygen in the treatment of expansion \r carbon dioxide ( CO2 ) is a colorless ,odorless gas ,slightly heavier than the air ,in the air content of only 0.03% .Biological respiration ,bacterial fermentation ,organic substance combustion can produce carbon dioxide .Carbon dioxide and carbon monoxide is different, its itself is harmless .Common carbon dioxide poisoning reason : 1 unprotected into long term unventilated mine ,closed warehouse ,ship bottom ,a cellar, drains, sewers and other . 2 in a closed ,narrow kitchen ,bathroom use of gas water heater . 3 in poorly ventilated places using dry ice or carbon dioxide extinguishers . editor this paragraph poisoning principle 1 of low concentrations of carbon dioxide can be excited by the respiratory center, then breathe deeply to accelerate .High concentration carbon dioxide can be suppressed and central respiratory paralysis . 2 due to carbon dioxide diffusing capacity of oxygen is 25 times more powerful than carbon dioxide ,so easily from alveolar diffusing to the blood caused by respiratory acidosis . clinically rare pure carbon dioxide poisoning ,due to increased carbon dioxide in the air ,usually accompanied by lower oxygen concentration .For example :kiln storage vegetables, fruit respiration produces carbon dioxide, while consumption of oxygen .The absence of protective measures into the cellar the poisoning ,is a high concentration of carbon dioxide and hypoxia caused by .Experiments prove that the oxygen sufficient concentration of carbon dioxide in air for 5% to no harm ;however ,the oxygen concentration to 17% below the air containing 4% of carbon dioxide ,can make people poisoning .Hypoxia can cause pulmonary edema ,brain edema ,metabolic acidosis ,electrolyte disturbance ,shock ,hypoxia encephalopathy . low concentrations is physiology sex suction stimulant .When the air in the product content more than normal ( 0.03%) ,can make deeper breathing accelerated ;if the content is 1% ,can make the normal breathing capacity increased by 25% ;its content is 3%, the respiratory volume increased 2 times .But when the content is 25% ,which makes the central respiratory paralysis ,and cause acidosis ,the inhaled concentration of not more than 10% ( normal oxygen content ) . editor for the clinical manifestation of 1 urgent poisoning suddenly entered the high concentration of carbon dioxide in the environment ,most people can be in a few seconds ,due to respiratory paralysis ,suddenly collapsed and died .Some people may feel dizzy ,palpitation ,first appears quickly the absurd ,convulsions ,coma .From the time ,such as rescue ,prone to dangerous ,and quickly from the file exit ,the patient can instantly awake .If the delay time ,the condition continues to increase, coma ,cyanosis ,vomiting ,cough up white or hemorrhagic frothy sputum ,two urinary incontinence ,convulsions ,rigidity of limbs .Check the body can be found in the corneal reflex and the pressure of pair of sorrowful ,orbital reflex positive pathological reflex .Because of high fever ,shock ,respiratory and circulatory failure, death ,or died of hepatic ,renal failure .By 1 a 2 months ,even several months to recover gradually, the part of the patient can leave a residue ( neurasthenia ,symptomatic Diantong ,paralysis agitans and cortical status etc.) . 2 chronic poisoning long time at a low concentration of carbon dioxide in the environment, which can cause headaches ,dizziness ,heart rate ,concentration, memory loss and so on . editor this paragraph treatment method for routine treatment of 1 away from the scene quickly ,breathe fresh air, or the absorption of oxygen .On the respiratory and cardiac arrest ,should adhere to the artificial respiration ,cardiac massage or open chest massage ,should not be reckless abandon . 2 other oil treatment with carbon monoxide poisoning .Hyperbaric oxygen therapy in 1 treatment principle (1 ) can be quickly corrected hypoxia ,broken due to hypoxia caused by the vicious spiral ,so that the body recover quickly .Due to carbon monoxide poisoning did not affect the blood oxygen transport function ,does not affect the cellular respiration ,the effect of hyperbaric oxygen on carbon dioxide poisoning effect superior to carbon monoxide poisoning . ( 2) hyperbaric oxygen may control cerebral edema ,pulmonary edema . ( 3) due to high pressure oxygen can rapidly improve brain hypoxia condition ,can reduce the incidence of anoxic encephalopathy or brought some relief . ( 4) accelerated brain neurons and nerve fibers repair ;accelerated cortical functional improvement ,accelerates the damaged organ recovery . 2 treatment methods and matters needing attention ( 1) with carbon monoxide poisoning . ( 2) on hypoxic encephalopathy ,intellectual recovery is poor or to cortical state ,interline fault of hyperbaric oxygen therapy .Every 2 to 3 courses of treatment after a break of 2 to 3 weeks ,then do 2 to 3 courses of treatment .Hyperbaric oxygen therapy is often the treatment should not be stopped during the period of . reference: China Hyperbaric Medical Information Network ;Baidu know