SOME OBSERVATIONS ON ANAESTHETIC SODA LIME

A GREAT deal of work has been done on the use of soda lime for carbon dioxide absorption in anaesthesia, much of which has been described by Adriani (1946). In the course of a laboratory study of carbon dioxide absorption, some further information has been obtained, and this is described here. This paper does not deal expressly with the carbon dioxide absorptive efficiency (which determines the concentration returned to the patient) or the effective life of a charge of soda lime, as these depend to a very large extent on the apparatus in which the soda lime is used. Several of the items discussed in this paper, however, have considerable bearing on these topics, and these influences are described.