due to circumstances and facts - that they had wood stoves in the tent, there was a snow storm outside, someone had cut the tent up from inside… it is possible that their behavior was caused by poisonous carbon monoxide (CO) poisoning incomplete combustion, which could actually happen here.
Description of the problem.
The cause of the elevated concentrations of poisonous carbon monoxide (CO) produced by the combustion of any fuel is its incomplete combustion. Leaks in the combustion plant and flue gas duct penetrate the space where the combustion plant (stove) is located and become dangerous to the occupants of this space because carbon monoxide (CO) is a poisonous gas where its presence is unrecognizable by the human senses because it is toxic gas without taste, color and odor. It enters the body only by inhalation, affecting the heart and vascular and nervous system. At low concentrations, one may feel tired and have a headache. At higher concentrations, disturbances of vision and coordination, severe headache, dizziness, confusing behavior, and nausea may occur. Very high concentrations are then fatal. Carbon monoxide poisoning is always serious, initially inconspicuous, but all the more insidious as its presence is unrecognizable by the human senses.
In the case of carbon monoxide poisoning, headaches are always first felt. As CO levels increase, coordination, impairment and cognitive impairment are impaired. The toxicity of CO is given by preventing / restricting the transfer of oxygen from the lungs to the tissues. Carbon monoxide is rapidly released from the lungs into the blood, where it binds to iron in the blood dye hemoglobin to form carboxyhemglobin (COHb) and limits oxygen transfer.
• Lighter poisoning is manifested by headache, pounding of blood in the head, pressure on the chest, dizziness. Nausea or vomiting occurs.
• Severe carbon monoxide poisoning is characterized by tendency to faint, weakness and increase in body temperature. Feelings are sometimes similar to alcohol intoxication, and the victim may behave aggressively. The affected person may be strongly disoriented and may become unconscious in the contaminated area.
• Death occurs from asphyxiation and can occur almost immediately after severe exposure as well as delay. The skin color changes to cherry red, which is caused by the presence of blood with (COHb) in the capillaries.
The table shows the corresponding exposure time to CO concentration levels.
CO concentration in mg / m3 Exposure time interval CO concentration in mg / m3 Exposure time interval
100 15 minutes 30 60 min
60 30 minutes 10 8 hours
Based on these data, the WHO recommends a concentration of CO in the air of not more than 10 mg / m3 as an eight-hour average.
• In some studies, a small but statistically significant reduction in exercise time to exhaustion was observed at COHb concentrations of 3.3-4.3%, although the maximum aerobic capacity was not reduced.
• Impact on neurological functions in the form of impaired coordination, reduced attention and cognitive abilities has also been demonstrated in healthy young people with COHb concentrations above 5%.
• At COHb concentrations greater than 5-10%, many functional failures and subjective symptoms such as headache and dizziness may already occur.
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