Back to an old favourite LO 😉
BT_SQ 1.6 Describe the methods of measurement applicable to anaesthesia, including clinical utility, complications and sources of error in particular:
· Gas analysis, including capnography
TRUE/FALSE The 90-95% response time for a CO2 analyser should be less than 150ms
TRUE/FALSE Volatile agents can be distinguished from each other by measuring infrared absorbance at 3.3µm
TRUE/FALSE Collision broadening means that the absorption peak for CO2 at 4.3µm is made wider in the presence of Nitrous Oxide
TRUE/FALSE Infrared analysers measure gas concentration rather than partial pressure
TRUE/FALSE Water is a powerful absorber of infrared light
A couple of follow on questions:
- Why is the 90% response time important in a CO2 analyser? The answer is related to what you have learned about requirements for invasive pressure monitoring.
- What is the device in the picture below? What is it used for? How does it work?