 Knowledge of the broad influences on health care and health care policy explains that nurses need to be aware of the influences of the client's care; social/political forces, expectations of health-care system, and changes in accessibility, and resources.Knowledge of Systems explains that the nurse needs to know about the health-care system so they can help their clients access services.Effective communication in nursing entails being empathic, non-judgmental, understanding, approachable, sympathetic, caring, and having safe and ethical qualities.