Summary: Scavenging Soe5
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1 Scavenging Soe5
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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
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What precautions should be taken with vaporizers in anesthesia?
- Fill with optimum care
- Avoid spillage
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What is the pressure range the system should operate within?
- Pressure range of -0.5 to +5 cmH₂O -
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
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How can theater pollution be prevented in anesthesia?
- Use scavenging systems appropriately -
What is the continuous flow capacity of the system?
- 75 l/min continuous flow
- 130 l/min peak flow
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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
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What type of anesthesia uses TIVA?
- Total intravenous anesthesia -
What issues can arise with active systems?
- Collapse of breathing reservoir bag
- Rebreathing
- Barotrauma from excessive positive pressure
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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
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