Abstract:
:Heat and moisture exchangers (HMEs) humidify, warm and filter inspired gas, protecting patients and apparatus during anaesthesia. Their incorporation into paediatric anaesthetic breathing systems is recommended. We experienced delays in inhalational induction whilst using a Mapleson F breathing system with an HME. We have demonstrated that the HME significantly alters gas flow within the breathing system. Approximately half of the fresh gas flow is delivered to the patient, the remainder being wasted into the expiratory limb of the breathing system. We suggest that the HME should be removed from the Mapleson F breathing system until inhalational induction is complete, or that the reservoir bag is completely occluded until an effective seal is obtained with the mask.
journal_name
Anaesthesiajournal_title
Anaesthesiaauthors
Da Fonseca JM,Wheeler DW,Pook JAdoi
10.1046/j.1365-2044.2000.01521.xsubject
Has Abstractpub_date
2000-06-01 00:00:00pages
571-3issue
6eissn
0003-2409issn
1365-2044pii
ana1521journal_volume
55pub_type
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