[Pre- and postoperative erythrocyte volume distribution curves in children with cyanotic heart defects].

The behaviour of the volume distribution curves (VVK) of red blood cells in children with cyanosed organic heart defect is reported by taking preoperative and postoperative observations as a basis. MCV determined from the volume distribution curve amounts to 80.3 micron3. If the volume distribution curves of the preoperative patient group are compared with the postoperative patient group (4 months) by means of the criteria DSmax, DS, inclination and dispersion, no significant changes can be identified. Therefore, shifting maturity divisions cannot be assumed in children with cyanosed organic heart defects, even in those with a preoperative hypoxia of a high degree.