RecruitingHemodynamic ABI MonitorThe goal of this observational study is to explore the relationship of heart function with the course and outcomes after traumatic brain injuries and nontraumatic intracerebral hemorrhage. The goal is to explore association between routinely collected hemodynamic and brain monitoring data. Participants already taking intervention A as part of their regular medical care and the investigators will follow up with participants 6 months after discharging the hospital.