[Pressure-and flow measurements during carotid-subclavian-bypass operations (author's transl)].

In 7 Carotid-Subclavian-Bypass operations pressure and blood-flow were studied. In 4 patients a reduced flow in the common carotid artery was noticed after opening the bypass. There were no neurological complications in the postoperative period in any patient. This decreased flow can be explained as a so-called "pseudosteal" due to changing in direction of flow in numerous and good functioning collaterals of this area.