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
  • 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?

    - 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
  • 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
  • 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?

    - Total intravenous anesthesia
  • 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
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