This is a mixed-method study, involving both surveys and ethnographic fieldwork. The research team will utilize the Collaboration and Satisfaction About Care Decisions (CSACD) survey instrument at regular intervals to assess nurse-physician collaboration. The instrument is validated and reliable and has been extensively tested. Permission was obtained to use the instrument. The ethnographic investigation will run concurrently and be performed by a doctoral student from Massachusetts Institute of Technology (MIT). No part of the study will involve patient intervention. The study will be conducted in the surgical intensive care unit (SICU).