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lüll Argumente fur Operationen an der Arteria carotis Balzer K; Muller KMHamostaseologie 2003[May]; 23 (2): 54-60AIM, METHODS, PATIENTS: In a prospective interdisciplinary study of 468 carotid artery stenoses we compared the ultrasound plaque morphology with the histological diagnosis. RESULTS: For detection of soft plaques and hard plaques by preoperative ultrasound examination we found a sensitivity of 80%. The accuracy for the estimation of the degree of the stenosis was 98%. In case of stroke in progression and completed stroke we found ulcerations by histological examination in 72%. By ultra-sound these ulcerations were detected only in 53%. We found a significant higher figure for TIA and stroke in soft plaque patients than in asymptomatic stage, in which hard plaque formation was seen more often. CONSEQUENCES: Patients with a soft plaque seem to have a higher risk of a postoperative permanent neurological deficit. However, the dangerous plaque formation with thrombosis or ulceration was not be detected with appropriate accuracy. Therefore the risk of embolisation cannot be predicted sufficiently by means of duplex scanning. This would be extremely important for the indication for stenting in this area. The number of HITS (high intensity transient signals) is 8 to 20 times higher in carotid stenting.|Carotid Arteries/surgery[MESH]|Carotid Stenosis/diagnostic imaging/pathology/*surgery[MESH]|Humans[MESH]|Reproducibility of Results[MESH]|Ultrasonography[MESH] |