Background and Objectives:Breakdowns in clinician-family communication in neurologic intensive care units (neuroICUs) are common, particularly for goals-of-care decisions to continue or withdraw life-sustaining treatments while considering long-term prognoses. Shared decision-making interventions (decision aids [DAs]) may prevent this problem and increase patient-centered care, yet none are currently available. We assessed the feasibility, acceptability, and perceived usefulness of a DA for goals-of-care communication with surrogate decision-makers for critically ill severe acute brain injury (SABI) patients after hemispheric acute ischemic stroke, intracerebral hemorrhage, or traumatic brain injury.Methods:We conducted a parallel-arm, unblinded, patient-level randomized, controlled pilot trial at two tertiary-care U.S. neuroICUs and randomized surrogate participants 1:1 to a tailored paper-based DA provided to surrogates prior to clinician-family goals-of-care meetings or usual care (no intervention prior to clinician-family meetings). The primary outcomes were feasibility of deploying the DA (recruitment, participation, retention), acceptability, and perceived usefulness of the DA among surrogates. Exploratory outcomes included outcome of surrogate goals-of-care decision, code-status changes during admission, patients’ 3-month functional outcome, and surrogates’ 3-month validated psychological outcomes.Results:We approached 83 surrogates of 58 patients and enrolled 66 surrogates of 41 patients (80% consent rate). Of 66 surrogates, 45 remained in the study at 3 months (68% retention). Of the 33 surrogates randomized to intervention, 27 were able to receive the DA, and 25 subsequently read the DA (93% participation). 82% rated the DA’s acceptability as good or excellent (median Acceptability score 2 [IQR 2;3]); 96% found it useful for goals-of-care decision-making. In the DA group, there was a trend towards fewer comfort-care decisions (27% vs. 56%, p=0.1) and fewer code-status changes (no change, 73% vs. 44%, p=0.02). At 3 months, fewer patients in the DA group had died (33% vs. 69%, p=0.05; median GOS 3 vs.1, p=0.05). Regardless of intervention, 3-month psychological outcomes were significantly worse among surrogates who had chosen continuation-of-care.Discussion:A goals-of-care DA to support ICU shared decision-making for patients with SABI is feasible to deploy and well-perceived by surrogates. A larger trial is feasible to conduct, although surrogates who select continuation-of-care deserve additional psychosocial support.Clinical Trials registration:Clinicaltrials.gov NCT03833375Classification of Evidence:This study provides Class IV evidence that the use of a DA explaining the goals-of-care decision and the treatment options is acceptable and useful to surrogates of incapacitated critically ill patients with ischemic stroke, intracerebral hemorrhage, or traumatic brain injury.