ISSN 2398-2969      

Anesthetic circuit: Humphrey ADE-circle system

Clapis

Introduction

  • This system has been developed as a multipurpose system for small animal veterinary practice with or without recycling through a soda-lime canister.
  • It combines all the advantages of all the commonly used semi-closed systems (such as the Lack, Magill, Bain, T-piece   Anesthetic circuit: Ayre's T-piece  ) and circle systems but without any of their disadvantages.
  • See image of the Humphrey ADE system with absorber as a circle system offering the choice of technique   Anesthetic circuit: Humphrey ADE 02  .

Advantages and disadvantages

Semi-closed mode (without soda-lime canister)

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Efficiency and fresh gas flows during spontaneous respiration

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Recommended fresh gas flows

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Recycling

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Fresh gas flows with recycling

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Olikowski C E, Ewart M C, Bingham R M (1991) The Humphrey ADE system: evaluation in paediatric use. Br J Anaesth 66 (2), 253-257 PubMed.
  • Byrick R J, Rose D K (1986) Will we ever have a universal anesthetic breathing system? Can Anaesth Soc J 33 (6), 694-697 PubMed.
  • Humphrey D, Brock-Utne J G, Downing J W (1986) Single lever Humphrey ADE low flow universal anesthesia breathing system. Part I - Comparison with dual lever ADE, Magill and Bain systems in anesthetized spontaneously breathing adults. Can Anaesth Soc J 33 (6), 698-709 SpringerLink.
  • Dixon J, Chakrabarti M K, Morgan M (1984) An assessment of the Humphrey ADE anesthetic system in the Mapleson A mode during spontaneous ventilation. Anaesthesia 39 (6), 593-596 PubMed.

Other sources of information

  • Humphrey D & Dobromylskyj P (2000) BSAVA Birmingham 2000 & WCVA Berne 2000.

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