Rate of change in gas concentrations in a charged circle system with absorber

Abstract

Letters (two copies) must be typewritten on one side of the paper only and double spaced with wide margins. Copy should be prepared in the usual style and format of the Correspondence section. Authors must follow the advice about references and other matters contained in the Notice to Contributors to Anaesthesia printed at the back of each issue. The degree and diplomas of each author must be given in a covering letter personally signed by all the authors. Correspondence presented in any other style or format may be the subject of considerable delay and may be returned to the author for revision. If the letter comments on a published article in Anaesthesia, please send three copies; otherwise two copies of your letter will suffice.

A reply

“…Burns to the airway of a neonate and an adult undergoing direct laryngoscopy for an ENT procedure have been reported [1,2] using laryngoscopes with an incandescent light source. While traditionally laryngoscopes have used these light sources, a recent evaluation of laryngoscopes identified a number of blades and handles that now incorporate light emitting diodes (LEDs) [3].…”

“…As well as raising the alarm level, we ask that the circle absorber proximal intake be connected to the distal patient end during supplementary oxygen use, so that the next anaesthetic cannot be given without realising the error. Three similar cases have been described, and non-reattachment of the common gas outlet was considered to be a major contributor to a maternal death [1,2].…”

Raise the alarm

“…As well as raising the alarm level, we ask that the circle absorber proximal intake be connected to the distal patient end during supplementary oxygen use, so that the next anaesthetic cannot be given without realising the error. Three similar cases have been described, and non‐reattachment of the common gas outlet was considered to be a major contributor to a maternal death [1, 2].…”