Ramanathan S, Chalon J, Rothblatt A J, Patel C, Klein G S, Turndorf H
Acta Anaesthesiol Scand. 1980 Apr;24(2):93-6. doi: 10.1111/j.1399-6576.1980.tb01513.x.
In the course of a study on the carbon dioxide rebreathing characteristics of the Bain anaesthesia circuit, it was noted that raising the minute volume without changing the fresh gas inflow invariably led to increased rebreathing of expired gases. Altering tidal volume and rate in order to reproduce a given minute volume had the same effect on rebreathing. A nomogram constructed to quantitate increases in rebreathing in function of carbon dioxide production per minute, fresh gas flow from the anaesthesia machine, and minute volume is produced. It can be used to assess the amount of fresh gas flow necessary to mantain a steady and inspired gas composition.
在一项关于贝恩麻醉回路二氧化碳重吸入特性的研究过程中，注意到在不改变新鲜气体流入量的情况下增加分钟通气量总是会导致呼出气体重吸入增加。改变潮气量和呼吸频率以再现给定的分钟通气量对重吸入有相同的影响。构建了一个列线图，用于根据每分钟二氧化碳产生量、麻醉机的新鲜气体流量和分钟通气量来量化重吸入的增加情况。它可用于评估维持稳定的吸入气体成分所需的新鲜气体流量。
