[Contribution to the theory of venous grafting using the great saphenous vein. An experimental study]

The experimental study took interest in measurement of the flow through great saphenous vein graft. This study compared the flow through reversed vein graft and nonreversed vein graft with cutting vein valvules in the similar conditions. The flow in nonreversed graft lenght of 65 cm was Q = 697 +/- 26 ml/min, in reversed graft lenght of 65 cm Q = 836 +/- 8.61 ml/min. The flow in nonreversed graft lenght of 55 cm was Q = 1002.5 +/- 12.9 ml/min in reversed graft 55 cm Q = 1059 +/- 7.36 ml/min. The results of measurements show higher flow the shorter the graft as well as higher flow through the reversed graft. The statistically significant difference in values of the flow was also confirmed by Wilcoxon-Mann-Whitney test. The conclusion of our study can be applied on usage of allogenous vein grafts and autogenous vein grafts that could be transferred on the other leg. In these indications we can recommend the usage of reversed technique, because the measured flow through the reversed graft is statistically higher than through the nonreversed graft.