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Is transcranial Doppler sonography useful in detecting late cerebral ischaemia after aneurysmal subarachnoid haemorrhage?
- Source :
- British Journal of Neurosurgery. 10:19-25
- Publication Year :
- 1996
- Publisher :
- Informa UK Limited, 1996.
-
Abstract
- Transcranial Doppler (TCD) examination was performed in 109 patients with aneurysmal subarachnoid haemorrhage. Fifty-seven demonstrated flow velocities exceeding 120 cm/s in the middle cerebral artery. Of these, 23 developed delayed ischaemic deficit (DID). Mean flow velocity in this group was 170, SD 12.8 cm/s, in comparison with 155, SD 11.2 cm/s in the 34 patients without late signs of cerebral ischaemia. This difference is significant (p = 0.0269). In the 34 patients without DID, but TCD120 cm/s, 17 received anti-ischaemic therapy based on TCD values only, while 17 were given no additional treatment. The mean TCD values and the neurological outcome in the two groups were similar. A rapid increase in flow velocities of 50 cm/s or more during a 24-h period seemed to be a strong predictor of symptomatic vasospasm as seven out of 12 patients developed DID, five with permanent neurological sequelae. The study confirms results from other centres, that a strict correlation between high TCD flow velocities and occurrence of DID does not exist.
- Subjects :
- Adult
medicine.medical_specialty
Ultrasonography, Doppler, Transcranial
Ischemia
Severity of Illness Index
Central nervous system disease
Aneurysm
medicine.artery
Internal medicine
medicine
Humans
Aged
Vascular disease
business.industry
Intracranial Aneurysm
Vasospasm
General Medicine
Cerebral Arteries
Middle Aged
Subarachnoid Hemorrhage
Calcium Channel Blockers
medicine.disease
Transcranial Doppler
Ischemic Attack, Transient
Anesthesia
Middle cerebral artery
cardiovascular system
Cardiology
Nimodipine
Surgery
Subarachnoid haemorrhage
Neurology (clinical)
business
Subjects
Details
- ISSN :
- 1360046X and 02688697
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- British Journal of Neurosurgery
- Accession number :
- edsair.doi.dedup.....f8e9ac6f0fee139b989ada5167fcd6d6
- Full Text :
- https://doi.org/10.1080/bjn.10.1.19