Patient and family-centered care (PFCC) is the foundation for pediatric healthcare. The existence of hospital rules can, however, impact the extent to which PFCC is delivered. This qualitative, grounded theory study identified the existence of explicit and implicit rules in a pediatric intensive care unit, all of which negatively affected the family's ability to receive care that was attentive to their needs. The rules also placed the registered nurse in the challenging position of serving as rule enforcer and facilitator of PFCC. Further work is needed to explore how to adapt the hospital environment to better meet families' needs.