Q: Until recently, my blood pressure stayed around 135/75. About two weeks ago, my blood pressure suddenly shot up to 188/90. My doctor increased the doses of my blood pressure pills. But my systolic pressure is still around 170. Why would my blood pressure have increased so suddenly when I hadn't really changed anything? Is 170 systolic OK given my diastolic pressure is 80? A: One of the mysteries of blood pressure is that it can rise or fall without any obvious changes in your life.
The level of CO concentration is measured using a system called Parts Per Million (PPM). For example, 100 PPM CO means that for every 999,900 molecules of air, there are 100 molecules of CO. CO effects people differently depending on the concentration.
1 PHYSICAL AND CHEMICAL PROPERTIES. Carbon monoxide is a highly poisonous, odorless, colorless, and tasteless gas. It is very flammable in air. over a wide range of concentrations (George 2001) and burns in air with a bright blue flame (OâNeil et al. 2006). It becomes a liquid at 81.62 K (-191.53 Â°C) and is insoluble in water above 70 Â°C (George 2001). The physical and chemical properties of carbon monoxide are shown in Table 4-2.