An Extended Analysis of Indicator Dilution Curves, Leading to Direct Calculation of the Pulmonary Blood Volume and the Blood Volume in the Left Heart even in the Presence of Aortic and Mitral Regurgitation.

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Abstract
Summary.: An extended mathematical analysis of indicator dilution carves obtained by injection of indicator into the pulmonary artery and blood sampling from the brachial artery is given.It is shown that the previously given method to obtain the pulmonary blood volume holds even under the complicated conditions of regurgitation from the mitral or aortic valve or both. Under these conditions the volume of the left heart can still be determined though it is impossible to separate the volume of the auricle and ventricle.