428. Stellenwert der Dopplersonographie bei hochgradigen Stenosen der A. carotis interna

Abstract

Summary. During the last 2 years 1,035 patients have been subjected to directional continuous-wave Doppler ultrasonography. In all 248 severe stenoses of the internal carotid arteries were identified. Of these, 89 were checked by angiography and in 85 cases the diagnosis made with Doppler ultrasonography was confirmed. Another 106 stenoses were operated upon without preoperative Doppler diagnosis. Thus the reliability of the method proved to be 97 %. It is concluded that patients with high angiographic risk may be safely subjected to surgery on the basis of Doppler ultrasonography alone.