The IMPACT trial will evaluate two interventions, each with a separate context, but similar in that they empower and support families; one focused on involvement in care, and the other focused on involvement in decision-making. The first is a nutrition intervention The OPTimal nutrition by Informing and Capacitating family members of best practices (OPTICs) intervention, a multi-faceted strategy to engage and empower family members to advocate for and audit best nutrition practices in their family members. The second is a decision support intervention. The REALISTIC-80 Decision Support Intervention, is a web-based tool (www.myicuguide.com) to support families in shared decision-making about goals of medical treatments.