Abstract
Background
While advanced age is already recognized as an independent risk factor for a poor functional outcome following an aneurysmal subarachnoid hemorrhage (SAH), it is also important to investigate the critical age for defining a higher risk population among elderly patients and the clinical grade at admission in order to provide a prognostic description and help guide the management of patients aged ≥ 70 years.
Methods
This retrospective study included 165 patients aged 70–90 years who underwent surgical or endovascular treatment for a ruptured aneurysm. In addition to medical and radiological data, telephone interviews were used to obtain the 1-year functional outcome.
Results
A multivariate analysis revealed age (p = 0.001) and the World Federation of Neurological Surgeons (WFNS) grade (p = 0.001), regardless of the treatment modalities (surgical versus endovascular), as significant risk factors for a poor outcome, while a receiver operating characteristic analysis revealed 75 years as an appropriate cutoff value for the patient age to predict a poor 1-year functional outcome (area under the curve: 0.683). For the patients aged 70-75 years with good (1-3) and poor (4-5) WFNS grades, 81.9 % and 42.9 % achieved a favorable outcome (modified Rankin Scale 0-3), respectively, whereas for the patients over the critical age (> 75 years) with good and poor WFNS grades, 54.8 % and 5.9 % achieved a favorable outcome, respectively.
Conclusions
The long-term outcome for elderly patients with an aneurysmal SAH is affected primarily by the clinical condition at admission and the patient's age in relation to the critical age (> 75 years), regardless of the treatment modalities, including surgical clip** and endovascular coiling.
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DISCLOSURE
This study was supported by a grant from the Korea Healthcare Technology R & D Project, Ministry of Health & Welfare (A100870), Republic of Korea.
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Park, J., Woo, H., Kang, DH. et al. Critical age affecting 1-year functional outcome in elderly patients aged ≥ 70 years with aneurysmal subarachnoid hemorrhage. Acta Neurochir 156, 1655–1661 (2014). https://doi.org/10.1007/s00701-014-2133-6
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DOI: https://doi.org/10.1007/s00701-014-2133-6