HME filters: a boon or bane?

Abstract

Heat and moisture exchange filters (HMEFs) have been a controversial yet widely used adjunct to breathing circuit. Here we discuss a case scenario where clogging of HMEF with moisture presented as elevated peak airway pressures. Apart from stressing the importance of monitoring airway pressure, we discuss about the judicious use of HMEFs, problems associated with their use and measures to overcome the same. Being a ubiquitous adjunct, a thorough knowledge of its functioning and constant vigilance during its use is of paramount importance