There have been many investigations into the correlation between survivors of critical illnesses and cognitive impairments of patients admitted with sepsis or those in surgical or medical ICUs. These survivors of critical illness acquire severe cognitive impairments post hospital course of which can mean notable dependence among patients who were autonomous prior. I encourage you to read the resources and explore further, especially if you are headed to an acute setting. The research can provide you with further understanding of post acute impairments in the acute setting and post acute.
http://www.icudelirium.org/outcomes.html