Sewer gases can also be a boon in surgeryMarch 25th, 2008 - 4:11 pm ICT by admin
Washington, March 25 (IANS) Hydrogen sulphide, whose presence one associates with the smell of rotten eggs, is not only known to kill workers in sewers, but also improve chances of survival in lower doses. Previous investigations showed that the gas lowered body temperature and metabolic rate and also improved survival of mice when traumatic injury restricted oxygen supply.
But since hypothermia itself cuts metabolic needs, it was unclear whether the reduced body temperature was responsible for the other observed effects.
The current study was designed to investigate both that question and the effects of hydrogen sulphide inhalation on the cardiovascular system.
Researchers measured factors such as heart rate, blood pressure, body temperature, respiration and physical activity in normal mice exposed to low-dose (80 parts per million PPM) hydrogen sulphide for several hours.
They analysed cardiac function with electrocardiograms and echocardiography and measured blood gas levels. While some mice were studied at room temperature, others were kept in a warm environment - about 98
Tags: blood gas, blood oxygen levels, body temperature, body temperatures, cardiac function, echocardiography, electrocardiograms, hydrogen sulphide, metabolic measurements, metabolic rate, metabolic state, organ function, oxygen starvation, oxygen supply, respiration rate, rotten eggs, sewer gases, vital organs, volpato, warm environment