Title | Association of Seizure Occurrence with Aneurysm Treatment Modality in Aneurysmal Subarachnoid Hemorrhage Patients. |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | Allen BB, Forgacs PB, Fakhar MA, Wu X, Gerber LM, Boddu S, Murthy SB, Stieg PE, Mangat HS |
Journal | Neurocrit Care |
Volume | 29 |
Issue | 1 |
Pagination | 62-68 |
Date Published | 2018 08 |
ISSN | 1556-0961 |
Keywords | Adult, Aged, Electroencephalography, Endovascular Procedures, Female, Follow-Up Studies, Humans, Intracranial Aneurysm, Male, Middle Aged, Neurosurgical Procedures, Outcome and Process Assessment, Health Care, Retrospective Studies, Seizures, Subarachnoid Hemorrhage |
Abstract | BACKGROUND: Data on new-onset seizures after treatment of aneurysmal subarachnoid hemorrhage (aSAH) patients are limited and variable. We examined the association between new-onset seizures after aSAH and aneurysm treatment modality, as well their relationship with initial clinical severity of aSAH and outcomes. METHODS: This is a retrospective cohort study of all aSAH patients admitted to our institution over a 6-year period. 'Seizures' were defined as any observed clinical seizure or electrographic seizure on continuous electroencephalogram (cEEG) recordings, as determined by the reviewing neurophysiologist. Subgroup analyses were performed in low-grade (Hunt-Hess 1-3) and high-grade (Hunt-Hess 4-5) patients. Outcomes measures were Glasgow Coma Score (GCS) at intensive care unit (ICU) discharge and modified Rankin Scale (mRS) at outpatient follow-up. RESULTS: There were 282 patients with aSAH; 203 (72.0%) suffered low-grade and 79 (28%) high-grade aSAH. Patients were treated with endovascular coiling (N = 194, 68.8%) or surgical clipping (N = 66, 23.4%). Eighteen (6.4%) patients had seizures, of whom 10 (5.5%) had aneurysm coiling and 7 (10.6%) underwent clipping (p = 0.15). In low-grade patients, seizures occurred less frequently (p = 0.016) and were more common after surgical clipping (p = 0.0089). Seizures correlated with lower GCS upon ICU discharge (p < 0.001), in clipped (p = 0.011) and coiled (p < 0.001) patients and in low-grade aSAH (p < 0.001). Seizures correlated with higher mRS on follow-up (p < 0.001), in clipped (p = 0.032) and coiled (p = 0.004) patients and in low-grade aSAH (p = 0.003). CONCLUSIONS: New-onset seizures after aSAH occurred infrequently, and their incidence after aneurysm clipping versus coiling was not significantly different. However, in low-grade patients, new seizures were more frequently associated with clipping than coiling. Additionally, non-convulsive seizures did not occur in low-grade patients treated with coiling. These findings may explain, in part, previous work suggesting better outcomes in coiled patients and encourage physicians to have a lower threshold for cEEG utilization in low-grade patients suspected to have acute seizures after surgical clipping. |
DOI | 10.1007/s12028-018-0506-z |
Alternate Journal | Neurocrit Care |
PubMed ID | 29484583 |
PubMed Central ID | PMC6152813 |
Grant List | K23 NS096222 / NS / NINDS NIH HHS / United States UL1 TR000043 / TR / NCATS NIH HHS / United States UL1-TR000457-06 / TR / NCATS NIH HHS / United States UL1 TR002384 / TR / NCATS NIH HHS / United States UL1 TR000457 / TR / NCATS NIH HHS / United States |