Scavenging Soe5
18 important questions on Scavenging Soe5
What does the collecting and transfer system consist of?
- Tubing connected to adjustable pressure valve
- 30 mm connector
- Receiving system with open-end reservoir
- Visual flow indicator
- Fan or pump for vacuum
What precautions should be taken with vaporizers in anesthesia?
- Fill with optimum care
- Avoid spillage
What is the pressure range the system should operate within?
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What are the principal sources of pollution in the operating theatre?
- Expired gases from spill valve of breathing system
- Leaks from equipment
- Gases exhaled during patient transfer
- Spillage from vaporizers
How can theater pollution be prevented in anesthesia?
What is the continuous flow capacity of the system?
- 75 l/min continuous flow
- 130 l/min peak flow
What is the maximum permitted level of nitrous oxide and other anesthetic vapors as pollutants?
- Nitrous oxide: 100 ppm
- Halothane: 10 ppm
- Enflurane: 50 ppm
- Isoflurane: 50 ppm
What type of anesthesia uses TIVA?
What issues can arise with active systems?
- Collapse of breathing reservoir bag
- Rebreathing
- Barotrauma from excessive positive pressure
How can we prevent theatre pollution?
- Use circle systems to reduce pollution potential
- Employ air conditioning
- Increase air change in theatre
- Some systems recycle air
What is a key practice mentioned for anesthesia?
How do semi-active systems function?
- Conduct waste gases to air conditioning system
- Generate small negative pressure in scavenging tubing
What is the function of passive scavenging in anesthesia?
- Relieves pressure
- Uses a reservoir bag
- Positive and negative pressure relief valves
How do passive systems work?
- Patient’s expiratory effort or ventilator pressure
- Propels waste gas outside to atmosphere
What are the components of an active scavenging system?
- Collecting system
- Receiving system
- Disposal system
How can the pressure within the system be altered?
- Altered by wind conditions at external terminal
- Can generate negative or high positive pressure
How is negative pressure created in active systems?
What does the multi-theatre collection system include?
- Pipeline from other theatres
- Vacuum pump
- Vent to atmosphere
The question on the page originate from the summary of the following study material:
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