gms | German Medical Science

61st Annual Meeting of the German Society of Neurosurgery (DGNC) as part of the Neurowoche 2010
Joint Meeting with the Brazilian Society of Neurosurgery on the 20 September 2010

German Society of Neurosurgery (DGNC)

21 - 25 September 2010, Mannheim

Cortical spreading depolarization triggers delayed ischemic neurological deficit in absence of proximal vasospasm in patients with aneurysmal subarachnoid hemorrhage

Meeting Abstract

  • Johannes Woitzik - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • Jens P. Dreier - Klinik für Neurologie, Charité – Universitätsmedizin Berlin, Deutschland
  • Nils Hecht - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • Ingo Fiss - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • Jerome Manville - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • Peter Schmiedek - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • Michael Diepers - Abteilung für Neuroradiologie, Universitätsmedizin Mannheim, Deutschland
  • Elke Muench - Abteilung für Anästhesiologie, Universitätmedizin Mannheim, Deutschland
  • Hidetoshi Kasuya - Klinik für Neurochirurgie, Tokyo Women's Medical University, Tokyo, Japan
  • Peter Vajkoczy - Klinik für Neurochirurgie, Charité – Universitätsmedizin Berlin, Deutschland
  • COSBID study group

Deutsche Gesellschaft für Neurochirurgie. 61. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC) im Rahmen der Neurowoche 2010. Mannheim, 21.-25.09.2010. Düsseldorf: German Medical Science GMS Publishing House; 2010. DocV1598

DOI: 10.3205/10dgnc073, URN: urn:nbn:de:0183-10dgnc0738

Published: September 16, 2010

© 2010 Woitzik et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

Text

Objective: Cortical Spreading Depolarization (CSD) was measured in close association with delayed ischemic neuronal deficit (DIND) in patients with aneurysmal subarachnoid hemorrhage (aSAH). However, the assumed prime mechanism of DIND is the induction of proximal vasospasm triggered by breakdown products of erythrocytes during subarachnoid haemolysis. Nicardipine prolonged-release implants (NPRIs) have been proven to significantly reduce the incidence and degree of proximal vasospasm in patients with aSAH. In the present study we tested whether after treatment of proximal vasospasm with NPRIs CSD may still trigger DIND.

Methods: Therefore, we studied 13 patients with major aSAH. After surgical treatment of the ruptured aneurysm 10 NPRIs were placed closed to the proximal intracranial vessels. The degree of proximal vasospasm was assessed by digital subtraction angiography (DSA) on day 7 to 9. CSDs were recorded using a subdural 6-contact strip electrode in a total of 2,625 hours recording time. DIND was assessed by repeated neurological examination and repeated CT and/or MRI scans.

Results: 534 CSDs were assessed in 10 of 13 patients (77%). DSA revealed no vasospasm in 8 of 13 patients (62%) and mild, and moderate vasospasm in 3 and 2 of 13 patients, respectively (23% and 15%). Four Patients developed clinical and/or CT/MRI proven DIND, two of these patients in the absence of proximal vasospasm but time-locked to the occurrence of CSDs.

Conclusions: CSD may trigger DIND in the absence of proximal vasospasm in patients with aSAH.