Abstract TP332: Intracerebral Hemorrhage Volume to Edema Volume Ratio Predicts Poor Functional Outcome in Young Patients with Non-Lobar Primary Intracerebral Hemorrhage


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Abstract

Background and Purpose: Cerebral edema is known to contribute to clinical decline in patients with spontaneous ICH. We sought to evaluate the significance of cerebral edema on outcome in young patients with primary ICH.Methods: We performed a retrospective review of patients presenting to our CSC center from 2014-2015 with primary ICH, excluding patients with lobar ICH and age 55 and above. Patients were grouped according to functional outcome at discharge (mRS 0-3 vs. 4-6). Imaging characteristics of those with poor short-term functional outcome (mRS 4-6) were compared to those with mRS 0-3. Receiver Operating Characteristics curves were used to evaluate the discriminatory ability of imaging characteristics with regards to poor functional outcome.Results: A total of 38 patients met inclusion criteria (mean age 47, 42% black, 55% male). On presentation, patients with poor functional outcome had larger mean ICH volume (26 vs 9cc; p=0.020), higher ICH volume to edema volume ratios (2.0 vs. 0.7, p=0.010), more evidence of midline shift (38% vs. 6%, p=0.026), and IVH (52% vs. 17%, p=0.043). Groups did not differ in terms of edema volume, amount of midline shift, evidence of hydrocephalus, or herniation. ICH volume to edema volume ratio was a better discriminator of poor outcome (AUC=0.813, p=0.006) than ICH volume (AUC=0.802, p=0.008, Figure 1a). Further, ICH volume to edema volume ratio was a better discriminator of poor outcome (AUC=0.801, p=0.009) than ICH score (AUC=0.724, p=0.051, Figure 1b).Discussion: Among young patients with non-lobar primary ICH we observed that the ICH to edema ratio was a better predictor of poor functional status at discharge than ICH volume or ICH score.

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