Clot volume and clearance rate as independent predictors of vasospasm after aneurysmal subarachnoid hemorrhage
- 1 August 2004
- journal article
- Published by Journal of Neurosurgery Publishing Group (JNSPG) in Journal of Neurosurgery
- Vol. 101 (2), 255-261
- https://doi.org/10.3171/jns.2004.101.2.0255
Abstract
Object. This study was conducted for two purposes. The first was to determine whether a combination of measurements of subarachnoid clot volume, clearance rate, and density could improve prediction of which patients experience vasospasm. The second was to determine if each of these three measures could be used independently to predict vasospasm. Methods. Digital files of the cranial computerized tomography (CT) scans obtained in 75 consecutive patients admitted within 24 hours of subarachnoid hemorrhage (SAH) were analyzed in a blinded fashion by an observer who used quantitative imaging software to measure the volume of SAH and its density. Clot clearance rates were measured by quantifying SAH volume on subsequent CT scans. Vasospasm was defined as new onset of a focal neurological deficit or altered consciousness 5 to 12 days after SAH in the absence of other causes of deterioration, diagnosed with the aid of or exclusively by confirmatory transcranial Doppler ultrasonography and/or cerebral angiography...Keywords
This publication has 36 references indexed in Scilit:
- Effect of Cisternal and Ventricular Blood on Risk of Delayed Cerebral Ischemia After Subarachnoid Hemorrhage:Stroke, 2001
- Multivariate Analysis of Predictors of Cerebral Vasospasm Occurrence After Aneurysmal Subarachnoid HemorrhageStroke, 1999
- Cerebral Blood Flow Velocities After Subarachnoid Haemorrhage in Relation to the Amount of Blood Clots in the Initial Computed TomographyActa Neurochirurgica, 1998
- A Randomized Trial of Intraoperative, Intracisternal Tissue Plasminogen Activator for the Prevention of VasospasmNeurosurgery, 1995
- Initial and recurrent bleeding are the major causes of death following subarachnoid hemorrhage.Stroke, 1994
- Amount of blood on computed tomography as an independent predictor after aneurysm rupture.Stroke, 1993
- Infarction after aneurysm rupture does not depend on distribution or clearance rate of blood.Stroke, 1992
- Measurements of acute cerebral infarction: a clinical examination scale.Stroke, 1989
- Effect of intrathecal thrombolytic therapy on subarachnoid clot and chronic vasospasm in a primate model of SAHJournal of Neurosurgery, 1988
- Predicting cerebral ischemia after aneurysmal subarachnoid hemorrhageNeurology, 1987