[Central venous pressure and blood circulation in orthostatic by changes of the total blood volume in postoperative patients (author's transl)].

In 13 postoperative patients (1st to 9th day) of both sexes, aged 32 to 74, we studied whether an additional volume of 500 ml Haemaccel might demonstrate-as in earlier test series--a correlation between CVP measured in the horizontal position and changes of CVP and Pa measured at atrial level in a partly upright position (tilting angle 45 degrees and 60 degrees of the revolving bed). After volume administration (average: 8.13 ml/kg body weight) and raising of CVP in the horizontal by 3.42 cm H2O corresponding to an E'-value of 0.42 cm H2O/ml/kg body weight, we noticed a significant reduction of the decrease due to orthostasis as well of Pa at heart level as of the "shock index"; at the same time, however, the extent of the CVP decrease registered for all patients increased significantly regardless of tilting angle. Therefore, a correlation between the intravasal filling state and the reaction of orthostatic CVP and Pa may be assumed. In conclusion, the explanation for these results and the relation between the venous filling volume and some pathophysiological functions at the right heart are discussed.