Abstract
Abstract 1. 1. In analyses of the acid-base status by the Astrup equipment the p CO 2 , total CO 2 , standard bicarbonate and actual bicarbonate values are commonly determined graphically using the Singer-Hastings curve nomogram. 2. 2. A method is described to determine the data of the acid-base status arithmetically . By this it becomes possible to use an electronic computer for calculating. 3. 3. This method is recommended: 1. for the calculation of a large quantity of values, 2. when no urgent therapy depends on early results. 4. 4. The electronically calculated values are comparable with those determined from the nomogram. The differences for the single parameters are at the utmost between 0.8 and 2.4% of the normal data for adults; so they lie within the limits of accuracy for the values determined by nomogram. 5. 5. The use of an electronic computer saves time when handling large numbers of blood samples; it involves less sources of error. 6. 6. The calculated data may be evaluated statistically by the computer and may be transmitted to punched cards or tabulated mechanically without additional time loss.
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