Intoxication at home due to carbon monoxide production from gas water heaters.

Forensic medicine has a role to play in the community not only when dealing with criminal cases. When the forensic scientist observes fatalities that could have been prevented, he has an obligation to respond with the purpose of preventative measures. In a short period in Copenhagen there were a number of fatalities due to the production of carbon monoxide from gas water heaters. The gas water heaters were in most cases malfunctioning due to sooted convectors and installed without a flue, but at the time of installation maintenance checks were not mandatory, and if carried out they were often unprofessional. It is emphasized that even with well functioning equipment, the danger of intoxication exists when using a heater without a flue over an extended period, if the apartment is thoroughly insulated. The oxygen will then be used in the combustion and CO produced. The symptoms are insidious and uncharacteristic. Examples are described where physicians have failed to diagnose the condition in patients in adjoining apartments. The authorities finally responded to the medical reports with new regulations and with a favourable result. The responsibility with regard to the control of technical installations in a technically advanced society is discussed.