British Columbia Children's Hospital, Vancouver, Canada

Breathing circuit filters increase the deadspace effect in children under 2 years

Published in Physician Law Weekly, October 4th, 2006

Amplified deadspace from airway filters results in a significant increase in ventilation needed to maintain a normal P-ECO₂ in children <2 years of age with normal lungs.

"Filters are increasingly used in breathing circuits as they protect the circuit from contamination and facilitate humidification of inspired gas. The use of filters, however, can augment the anatomical deadspace. This can be significant in children because they have much smaller tidal volumes. Following institutional ethical approval, 20 healthy children <2 years of age who required tracheal intubation were recruited," investigators in Canada report.

"Ventilation...

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Source: Physician Law Weekly (2006-10-04)

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