Tormann T, Jung F, Simon J, Schwerdtfeger K, Kiesewetter H, Racenberg E
Institut für Anaesthesie der Universitätskliniken des Saarlandes, Homburg, Saar.
Anaesthesist. 1990 Mar;39(3):166-72.
During lumbar disc operation in the flexed prone position, a decrease in conjunctival pO2 can be observed although there is an increase in systemic blood flow after infusion of colloidal volume expanders. The regions of the body situated below the heart do not profit from the increase in systemic blood flow due to compression. The pO2 decreases more significantly after the infusion of a medium-molecular-weight solution with a more marked hemodynamic effect than after the infusion of low-molecular-weight hydroxyethyl starch. As the decrease in conjunctival pO2 is considerably less after low-molecular-weight hydroxyethyl starch, improved blood fluidity may be responsible for the increased tissue perfusion in the compressed area.
