[Isovolemic hemodilution--an adjuvant treatment principle in patients with chronic cor pulmonale caused by chronic obstructive lung disease].

On the basis of 10 patients with chronic cor pulmonale due to chronic obstructive lung disease and secondary polyglobulia in a clinical and experimental study could be made evident that by limited isovolaemic haemodilution (haematocrit value of 0.58 +/- 0.03 reduced to 0.36 +/- 0.01) are to be expected a decrease of the total pulmonary-arterial resistance, a reduction of the mean pulmonary arterial pressure, an increase of the partial O2-pressure as well as an increase of the heart index. Analogically to this as a consequence of the improved rheologic conditions a clear involution of the clinical signs of a heart insufficiency developed. Complications were not observed. The technique of the limited haemodilution should find a broader use in the medical practice, taking into consideration the isovolaemia as adjuvant treatment principle for patients with the indication mentioned.