KOHLENDIOXIDMONITOR

摘要

PCT No. PCT/GB90/01501 Sec. 371 Date Feb. 9, 1992 Sec. 102(e) Date Feb. 9, 1993 PCT Filed Oct. 1, 1990 PCT Pub. No. WO91/05252 PCT Pub. Date Apr. 18, 1991.The monitor which provides a detectable indication of the presence of an elevated proportion of carbon dioxide compared to that in normal ambient air, comprises a substrate coated by an intimate mixture of a transparent plasticised polymer vehicle, and an indicator material which undergoes a colour change on exposure to carbon dioxide. The indicator material comprises a salt of an indicator anion and a lipophilic organic quaternary cation. The device can be used to provide an indication of correct intubation of the trachea of a patient.