Humidification and the HME filter

Keywords: humidification, HME filter, intubation, ventilation bypass


The process of intubation and ventilation bypasses both the physiological humidification system and protective filtering processes. Various devices have been developed to aid in providing humidification of medical gasses and to serve as filters to reduce transmission of microbes. The following types of devices are available:

  • Heat and moisture exchanger without filter (HME)
  • Electrostatic filter with or without HME
  • Pleated filter with or without HME


Author Biography

M A Wellbeloved, University of the Witwatersrand

Department of Anaesthesiology, Charlotte Maxeke Johannesburg Hospital, University of the Witwatersrand, South Africa

FCA 1 Anaesthetic Refresher Course 2020