Normalization of transcranial Doppler middle cerebral artery velocities after aneurysm clipping
| Autor: | W.B. Yoon, James I. Ausman, Fady T. Charbel, Steven U. Brint, Daniel B. Hier |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Male Normalization (statistics) medicine.medical_specialty Subarachnoid hemorrhage Ultrasonography Doppler Transcranial Aneurysm Ruptured Aneurysm Reference Values medicine.artery medicine Humans Postoperative Period cardiovascular diseases Aged Retrospective Studies Aged 80 and over business.industry Intracranial Aneurysm Vasospasm Cerebral Arteries Middle Aged Subarachnoid Hemorrhage Bleed medicine.disease nervous system diseases Transcranial Doppler Treatment Outcome medicine.anatomical_structure Middle cerebral artery cardiovascular system Female Surgery Neurology (clinical) Radiology business Blood Flow Velocity circulatory and respiratory physiology Artery |
| Zdroj: | Surgical Neurology. 47:541-546 |
| ISSN: | 0090-3019 |
| DOI: | 10.1016/s0090-3019(96)00454-5 |
| Popis: | BACKGROUND Factors that promote normalization of middle cerebral artery (MCA) velocities after cerebral aneurysm surgery may be important to identify in order to optimize management. Survival analysis of serial transcranial Doppler (TCD) MCA velocities in the setting of aneurysm surgery offers an additional means of analyzing outcome. METHODS We retrospectively studied serial MCA velocities obtained via TCD in 113 patients who underwent cerebral aneurysm clipping to analyze which factors promoted normalization. The presence of bleeding, aneurysm location, age, gender, ethnicity, initial blood pressure, hemoglobin, and clinical condition were examined. RESULTS Patients who did not bleed but were clipped still tended to have transient periods of abnormally elevated velocities. Of those patients who bled and were clipped, older patients normalized faster. Women showed a trend toward slower normalization only in the subarachnoid hemorrhage (SAH) absent group. Other parameters listed above did not effect normalization time. CONCLUSIONS Our data suggest aneurysm surgery in and of itself may promote transient rises in MCA velocities. Age appears to be a significant factor in predicting normalization of MCA velocities after SAH. |
| Databáze: | OpenAIRE |
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