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Correlation between Cerebral Blood Flow, Somatosensory Evoked Potentials, CT Scan Grade and Neurological Grade in Patients with Subarachnoid Hemorrhage
| Content Provider | Scilit |
|---|---|
| Author | Fazl, M. Houlden, D. A. Weaver, K. |
| Copyright Year | 1991 |
| Description | Cerebral blood flow (CBF) and central conduction time (CCT) were recorded from 58 subarachnoid hemorrhage patients and from 49 age-matched controls. CBF was calculated following Xenon inhalation and CCT was determined from somatosensory evoked potentials (SSEP's) following median nerve stimulation. Each patient had a CT scan on the day of admission which was graded from I-IV. CBF, CCT and neurological grade (Hunt and Hess classification) were concomitantly recorded 1, 4, 7 and 14 days after subarachnoid hemorrhage. Mean CBF was highest in patients with neurological grades I and II (48.6 ± 12.3 and 48.1 ± 10.3 ml/lOOgm/min respectively) and lowest in patients with neurological grade IV (37.3 ± 9.6 ml/lOOgm/min). Patients in neurological grade I or II had mean CBF and CCT measurements that were significantly different from those obtained from patients in neurological grade IV (P < 0.05). Neurological grade and CT scan grade correlated with CBF (P < 0.0001) better than CCT (P = 0.015). Unexpectedly low CBF's from patients in neurological grades II and III (< 37 and < 31 ml/lOOgm/min respectively) failed to significantly prolong CCT suggesting CCT is unable to detect marginal ischemia. A significant correlation between CBF and CCT occurred only when CBF was < 30 ml/lOOgm/min (R = 0.75, P = 0.05). It appears that prolonged CCT is associated with a drop in CBF only when CBF drops below a certain threshold. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/C14E81147B35C22A1D560120CA78F944/S0317167100032145a.pdf/div-class-title-correlation-between-cerebral-blood-flow-somatosensory-evoked-potentials-ct-scan-grade-and-neurological-grade-in-patients-with-subarachnoid-hemorrhage-div.pdf |
| Ending Page | 457 |
| Page Count | 5 |
| Starting Page | 453 |
| ISSN | 03171671 |
| e-ISSN | 20570155 |
| DOI | 10.1017/s0317167100032145 |
| Journal | Canadian Journal of Neurological Sciences |
| Issue Number | 4 |
| Volume Number | 18 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 1991-11-01 |
| Access Restriction | Open |
| Subject Keyword | Canadian Journal of Neurological Sciences Ct Scan Grade Patients with Neurological Grades |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology Neurology (clinical) |
