Quantitative analysis of relative volume of low apparent diffusion coefficient value can predict neurologic outcome after cardiac arrest

Resuscitation
Hyung Ki MoonChun Song Youn

Abstract

Predicting neurologic outcomes after cardiac arrest (CA) is challenging. This study tested the hypothesis that a quantitative analysis of diffusion weighted imaging (DWI) using the FMRIB Software Library (FSL) can predict neurologic outcomes after CA and can clarify the optimal apparent diffusion coefficient (ADC) thresholds for predicting poor neurologic outcomes. Out-of-hospital CA patients treated with targeted temperature management (TTM) who underwent DWI were included in this study. Voxel-based analysis was performed to calculate the mean ADC value. ADC thresholds (750, 700, 650, 600, 550, 500, 450 and 400) and brain volumes below each threshold were also analyzed for their correlation with outcomes. The patients were divided into early (within 48 h after return of spontaneous circulation (ROSC)) and late group (between 48 h and 7 days after ROSC) according to the DWI scan time. The primary outcome was a poor neurologic outcome at 6 months after CA, defined as a cerebral performance category (CPC) of 3-5. One hundred ten DWIs were analyzed. The mean ADC values were 789.0 (761.5-826.5) × 10-6 mm2/s for the good neurologic outcome group and 715.2 (663.1-778.4) × 10-6 mm2/s for the poor neurologic outcome group (p < 0.001). ...Continue Reading

Citations

Sep 12, 2020·Intensive Care Medicine·Claudio SandroniTobias Cronberg
May 27, 2021·Clinical and Experimental Emergency Medicine·Young-Min KimUNKNOWN Steering Committee of 2020 Korean Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care
Oct 28, 2021·Intensive Care Medicine·Claudio SandroniMypinder Sekhon

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