Siegel D, Ramanathan S, Chalon J, Turndorf H
Crit Care Med. 1979 Jun;7(6):282-4. doi: 10.1097/00003246-197906000-00007.
A computer program was developed to calculate intrapulmonary venous admixture on a Texas Instruments TI 59 programmable calculator. The program incorporates the following characteristics: 1) a correction for saturated water vapor pressure which varies with body temperature; 2) a mathematical model of the standard oxyhemoglobin dissociation curve; and 3) correction factors for shifts of the dissociation curve due to variations in pH and carbon dioxide tension. It also corrects oxygen tensions obtained at electrode temperature to those at patient temperature, and calculates variations of the Bunsen solubility coefficient of oxygen in blood with body temperature.
开发了一个计算机程序，用于在德州仪器TI 59可编程计算器上计算肺内静脉血混合。该程序具有以下特点：1）对随体温变化的饱和水蒸气压进行校正；2）标准氧合血红蛋白解离曲线的数学模型；3）针对因pH值和二氧化碳分压变化导致的解离曲线偏移的校正因子。它还将电极温度下获得的氧分压校正为患者体温下的氧分压，并计算血液中氧的本生溶解度系数随体温的变化。
