The section, EDAIC part-1: MCQs and explanations, covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
Question: When compared to main-stream carbon dioxide analyzers, side-stream analyzers:
a. Have a slower response time
b. Do not require calibration
c. Can also be used for other gas and vapour analysis
d. Consist of a tube with a 1.2 mm internal diameter
e. The tubing has a Teflon coating
Answers:
- true
- false
- false
- true
- true
Explanation:
Side-stream analyzers:
- Have a slow response time because the sample has to travel some distance to reach the analyzer. A delay of less than 3.8 s is considered acceptable; affected by the length of the tubing, the calibre of the tubing and sampling rate.
- The tubing diameter is usually 1.2 mm
- The sampling rate is approximately frequently 150–200 ml/min (less in paediatric monitors).
- Require calibration.
- Teflon coated renders it impermeable to CO2 and prevents the plastic from reacting with anaesthetic vapours.
- A carbon dioxide analyzer only measures carbon dioxide.
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The ‘EDAIC part-1: Questions and explanations’ section covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
