Chance of aneurysm in patients suspected of SAH who have a ‘negative’ CT scan but a ‘positive’ lumbar punctureReportar como inadecuado

Chance of aneurysm in patients suspected of SAH who have a ‘negative’ CT scan but a ‘positive’ lumbar puncture - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Journal of Neurology

, Volume 259, Issue 4, pp 649–652

First Online: 08 September 2011Received: 05 May 2011Revised: 08 August 2011Accepted: 16 August 2011


In patients with sudden severe headache and a negative computed tomography CT scan, a lumbar puncture LP is performed to rule in or out a subarachnoid haemorrhage SAH, but this procedure is under debate. In a hospital-based series of 30 patients with sudden headache, a negative CT scan but a positive LP defined as detection of bilirubin >0.05 at wavelength 458 nm, we studied the chance of harbouring an aneurysm and the clinical outcome. Aneurysms were found in none of both patients who presented within 3 days, in 8 of the 18 44% who presented within 4–7 days and in 5 of the 10 50% who presented within 8–14 days. Of the 13 patients with an aneurysm, 3 23% had poor outcome. In patients who present late after sudden headache, the yield in terms of aneurysms is high in those who have a positive lumbar puncture. In patients with an aneurysm as cause of the positive lumbar puncture, outcome is in the same range as in SAH patients admitted in good clinical condition.

KeywordsThunderclap headache CT CSF Aneurysm  Download fulltext PDF

Autor: P. Horstman - F. H. H. Linn - H. A. M. Voorbij - G. J. E. Rinkel


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