caa a22 4500 477106986 CHVBK 20180405111556.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF01412311 doi (NATIONALLICENCE)springer-10.1007/BF01412311 Haemodynamic classification of symptomatic obstructive carotid artery disease [Elektronische Daten] [Angelika Sorteberg, W. Sorteberg, K. Lindegaard, J. Bakke, H. Nornes] Summary: 63 subjects with symptomatic obstructive carotid artery disease were investigated with transcranial Doppler ultrasonography. Their blood velocities at rest (V) in the middle and posterior cerebral artery (MCA and PCA) and in the extracranial internal carotid artery were measured and the pulsatility index (PI) and Uhem index (V mca ·PI mca /V pca ·PI pca ) calculated. The vasomotor responses in both MCAs were also tested. The subjects were divided into groups based on the findings on physical examination and cerebral computed tomography. In the patient group with lacunar/territorial infarction we found in the stroke hemisphere: V mca > V pca , PI mca = PI pca and normal values for the Uhem index and total vasomotor reactivity. In the patient group with watershed infarction this hemisphere was characterized by: V mca < V pca , PI mca < PI pca and subnormal scores for the Uhem index and total vasomotor reactivity. Displaying features from both stroke groups, we obtained in the hemisphere of interest in patients with transient ischaemic attacks: V mca = V pca , PI mca < PI pca and normal values for the Uhem index and total vasomotor reactivity. Five patients with clinical evidence of stroke but with negative cerebral computed tomography findings had scores similar to those of the watershed group of patients. For the stroke patients, individual measurements of V, PI and total vasomotor reactivity failed to clearly identify to which stroke group a subject might belong. However, such an identification was achieved in all subjects when using the Uhem index. The Uhem index data in patients with transient ischaemic attacks suggest two subgroups with different pathogenesis underlying the ischaemic events. Springer-Verlag, 1996 Transcranial Doppler ultrasonography nationallicence obstructive carotid artery disease nationallicence cerebral infarction nationallicence cerebral haemodynamics nationallicence Sorteberg Angelika Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut Sorteberg W. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut Lindegaard K. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut Bakke J. Department of Radiology, Section of Neuroradiology, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut Nornes H. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut Acta Neurochirurgica Springer-Verlag 138/9(1996-09-01), 1079-1087 0001-6268 138:9<1079 1996 138 701 https://doi.org/10.1007/BF01412311 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01412311 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sorteberg Angelika Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut NATIONALLICENCE 700 1- Sorteberg W. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut NATIONALLICENCE 700 1- Lindegaard K. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut NATIONALLICENCE 700 1- Bakke J. Department of Radiology, Section of Neuroradiology, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut NATIONALLICENCE 700 1- Nornes H. Department of Neurosurgery, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway aut NATIONALLICENCE 773 0- Acta Neurochirurgica Springer-Verlag 138/9(1996-09-01), 1079-1087 0001-6268 138:9<1079 1996 138 701 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer