Development and Validation of a Prognostic Computed Tomography Scoring Model for Functional Outcomes in Patients with Large Hemispheric Infarction Following Decompressive Craniectomy

Overview

Journal Front Neurol

Specialty Neurology

Date 2024 Feb 8

PMID 38327622

Authors

Yutong Zhao

Yuguang Tang

Zongyi Xie

Affiliations

Soon will be listed here.

Abstract

Background: There is no established prognostic scoring system developed for patients with large hemispheric infarction (LHI) following decompressive craniectomy (DC) based on imaging characteristics. The present study aimed to develop and validate a new computed tomography scoring model to assess the 6-month risk of poor functional outcomes (modified-Rankin scale [mRS] score of 4-6) in patients with LHI receiving DC.

Methods: This retrospective cohort study included patients at two tertiary stroke centers. A prediction model was developed based on a multivariable logistic regression. The final risk factors included the ASPECTS (Alberta Stroke Program Early Computed Tomography Score), longitudinal fissure cistern, Sylvian fissure cistern, and additional vascular territory involvement. 1,000 bootstrap resamples and temporal validation were implemented as validations for the scoring system.

Results: Of the 100 individuals included in the development cohort, 71 had poor functional outcomes. The scoring model presented excellent discrimination and calibration with C-index = 0.87 for the development cohort, and C-index = 0.83 for the temporal validation cohort with non-significant Hosmer-Lemeshow goodness-of-fit test. The scoring model also showed an improved AUC compared to the ASPECTS. For each point in the score model, the adjusted risk of poor functional outcomes increase by 47.8% (OR = 1.48, < 0.001). The scores were inversely correlated with MAP (mean arterial pressure, paired -test, = 0.0015) and CPP (cerebral perfusion pressure, rho = -0.17, = 0.04).

Conclusion: In patients with LHI following DC, the score system is an excellent predictor of poor functional outcomes and is associated with CPP and MAP, which might be worth considering in clinical settings after further external validation.

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