Croci M, Corrado F, Sibilla E, Tiby A, Vercesi G, Proietti D, Vannucci A
Servizio di Anestesia e Rianimazione, IRCCS Ospedale Maggiore, Milano.
Minerva Anestesiol. 1991 Jan-Feb;57(1-2):13-6.
The Authors studied in 10 patients during mechanical ventilation the effects of the application of heat and moisture exchanger (HME) in the presence of constant TV and frequency. They observed an increase of PaCO2 and PE, CO2 during the use of HME; this is due to Vd/Vt increase. The Authors conclude that it is mandatory to increase the total ventilation when using HME to avoid dangerous levels of hypercapnia.
作者在10例机械通气患者中,研究了在潮气量(TV)和频率恒定的情况下应用热湿交换器(HME)的效果。他们观察到在使用HME期间,动脉血二氧化碳分压(PaCO2)和呼气末二氧化碳分压(PE,CO2)升高;这是由于死腔量/潮气量(Vd/Vt)增加所致。作者得出结论,使用HME时必须增加总通气量,以避免发生危险水平的高碳酸血症。