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An admission bioclinical score to predict 1-year outcomes in patients undergoing aneurysm coiling
Vincent Degos1, Christian C Apfel, Paola Sanchez
1Department of Anesthesia and Perioperative Care, University of California, San Francisco, CA 94110, USA. degosv@anesthesia.ucsf.edu
Insights
A new ABC score, integrating biomarkers and clinical data, accurately predicts 1-year outcomes for subarachnoid hemorrhage patients treated with coiling. This score outperforms existing methods for improved patient management.
Area of Science:
- Neurology
- Neurosurgery
- Critical Care Medicine
Background:
- Existing outcome prediction scores for subarachnoid hemorrhage (SAH) are not designed for endovascular treatment (coiling).
- There is a need for a validated score to predict outcomes in patients undergoing endovascular coiling for SAH.
Purpose of the Study:
- To develop and validate a predictive score for 1-year outcomes in patients with SAH treated with endovascular coiling.
- To compare the performance of the new score against existing clinical scores.
Main Methods:
- Developed an admission bioclinical score (ABC score) integrating Glasgow Coma Scale (GCS), troponin I, and S100β.
- Compared the ABC score with GCS, World Federation of Neurosurgical Societies (WFNS), and Fisher scores using receiver operating characteristic (ROC) curves.
- Validated the ABC score in an independent cohort of 526 patients over 1 year.
Main Results:
- The ABC score independently associated Glasgow Coma Scale, S100β, and troponin with 1-year mortality.
- In the derivation cohort, the ABC score achieved an ROC of 0.82, significantly outperforming GCS, WFNS, and Fisher scores.
- In the validation cohort, the ABC score maintained superiority with an ROC of 0.76.
Conclusions:
- The ABC score enhances 1-year outcome prediction at admission for patients with coiled SAH.
- This study supports integrating biomarkers and clinical characteristics for improved outcome prediction in SAH.
- The ABC score offers a valuable tool for managing patients with coiled SAH.
Background And Purpose:
A number of scores were developed to predict outcomes after clipping for subarachnoid hemorrhages, yet there is no score for patients undergoing endovascular treatment. Our goal was to develop, compare, and validate a predictive score for 1-year outcomes in patients with coiled subarachnoid hemorrhage.
Methods:
We studied 526 patients for 1 year after intensive care unit discharge. We developed an admission bioclinical score (ABC score), which integrated biomarkers such as troponin I and S100β, with the Glasgow Coma Scale. Using the receiver operating characteristic curve (95% CI), the ABC score was compared with the Glasgow Coma Scale, World Federation of Neurosurgical Societies score, and Fisher score in the derivation cohort and further validated in an independent cohort.
Results:
In the derivation cohort (from 2003-2007, n=368), multivariate logistic regression analysis showed that only Glasgow Coma Scale (P<0.001), high S100β (P<0.001), and high troponin (P<0.02) were independently associated with 1-year mortality. Troponin, S100β, and Glasgow Coma Scale were thus integrated to derive the ABC score. In the derivation cohort, the ABC score reached an receiver operating characteristic curve of 0.82 (0.77-0.88, P<0.001) and was significantly greater than the receiver operating characteristic curves of the Glasgow Coma Scale, World Federation of Neurosurgical Societies, and Fisher scores for predicting 1-year mortality. In the validation cohort (from 2008-2009, n=158), the ABC score's receiver operating characteristic curve of 0.76 (0.67-0.86, P<0.001) remained superior to the 3 other scores for predicting 1-year mortality.
Conclusions:
The ABC score improves 1-year outcome prediction at admission for patients with coiled subarachnoid hemorrhage. Our study provides large cohort-based evidence supporting integration of individual biomarkers and clinical characteristics to predict outcomes. Clinical Trial Registration- URL: www.clinicaltrials.gov. Unique identifier: NCT01357057.
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