RÉSUMÉ
Objective To explore the clinical significance of EEG and CT presentations in the patients with acute ischemic stroke. Methods Fifty-six consecutive patients with acute ischemic stroke admitted immediately after the onset were enrolled in this study.Thefindings bYCT,EEG,brain electrical activity mapping(BEAM),examinations of somatosensory evoked potentials(SEPs)and motor evoked potentials(MEPs)to transcranial magnetic stimulation, and the scores of modified Edinburgh-Scandinavia stroke scale(MESSS)and Barthel Index(BI)were comparatively analyzed in these patients. Results The location of the cerebral foci with EEG abnormalities were basically consistent with the lesions indentified by CT.but the range of the lesions defined by the two modalities showed some discrepancies.There Was statistically significant difference in SEP and MEP between the injured and uninjured sides(P<0.05).There was apositive correlation between MESSS on admission and BI on day 28 in hospital(r=0.58,P<0.05). Conclusion CT and cerebral electrophysiological examination provide valuable assistance in early diagnosis of acute ischemic stroke.
RÉSUMÉ
Objective To investigate the dynamic changes of cerebral blood flow defined bytranscranial color Doppler (TCD) and their correlation with the severity and prognosis of acute ischemicstroke. Methods Fifty-six consecutive patients with the primary onset of acute ischemic strokereceived dynamic examinations with TCD upon admission and on days 2, 4, 7, 14 and 28 following theonset, and the mean blood flow velocity and pulsatility index were recorded. Results TCDexaminations upon admission revealed high abnormal rate. The mean blood flow velocity of the middlecerebral artery (VmMCA) on the lesion side was significantly lower than that on the contralateral side andthat of the control group. The blood flow velocity of the anterior cerebral artery (VmACA) on the lesion sidewas significantly increased compared with that on the contralateral side and that of the control group.VmMCA of main stem occlusion group {23.45 [7.55,38.72] cm/s}, central branch infarction group {52.53[45.56,66.93] cm/s}, and cortical branch of cerebral arteries infarction group {38.44[31.67,52.45] cm/s}was significantly lower than that of the control group {66.51 [56.64,71.43] cm/s}. VmMCA graduallyincreased in these patients after the treatment, showing significant difference from that measured uponadmission. The PI of the middle cerebral artery increased after admission, with significant difference fromthat recorded on admission and that of the control group. Conclusion TCD has high diagnostic valuefor ischernic stroke and may help evaluate the severity of the condition and the prognosis of the patients.