25 Questions
What is the normal range of mmHg?
35-45
What is displayed at the end of expiration?
Co2 levels
What is the primary use of the displayed value?
To diagnose respiratory diseases
What is the unit of measurement for the displayed value?
mmHg
When is the value of Co2 displayed?
At the end of expiration
What is the primary function of a capnograph?
To display a graphical representation of CO2 levels
What is measured by an end-tidal carbon dioxide analyser?
End-tidal CO2 levels
What is another name for an end-tidal CO2 analyser?
Capnograph
What type of display is provided by a capnograph?
Graphical waveform display
What is the name of the device that records and displays CO2 levels?
Capnograph
What is the main function of the heater in the main stream sampling chamber?
To prevent vapour condensation
How many types of sampling chambers are mentioned?
Two
Where is the main stream sampling chamber located?
Within the patient gas stream
What is the purpose of the sampling chamber?
To sample the patient gas stream
What is a feature of the main stream sampling chamber?
It has a heater to prevent vapour condensation
What happens to infrared radiation when it interacts with CO2?
It is absorbed
What determines the amount of infrared radiation absorbed by CO2?
Partial pressure of CO2
How does the photodetector respond to light?
It generates voltage
What is the relationship between the amount of light and the voltage generated by the photodetector?
The voltage increases as light intensity increases
What is the role of CO2 in the mechanism described?
It absorbs infrared radiation
What is the purpose of sending the voltages to the microprocessor?
To analyze the room air composition
What is the function of the reference chamber?
To contain room air for reference
What is the contents of the reference chamber?
Room air
What is the role of the microprocessor in the CO2 measurement process?
To analyze the voltage signals from the sensors
What is the purpose of the room air in the reference chamber?
To serve as a baseline for the CO2 measurement
Test your knowledge of capnography and anesthetic equipment, including capnographs and end-tidal CO2 analysis. Learn about the devices that record and display CO2 waveforms in anesthesia practice.
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