Nursing, as described by the American Nurses Association, is the protection, promotion and optimization of health and abilities to prevent illnesses and injuries, alleviating suffering, through Diagnosis and treatment of human response and advocacy in care of individuals/family/communities and population.
As nurses, we render care to our patients, recognizing that, as patients, they are always sick. We practice to treat, by protecting them from any further exposure that will prolong the illnesses. We promote good health by practicing infection control principles. Techniques, as the work, documented, from the pioneers, such as Florence Nightingale, our work is evidenced, by the continued decrease of hospitalization.
By being educated as a nurse, we practice by using technologies learnt. As a result of the researches done, we gain that knowledge of how to prevent the spread of diseases, of how to prevent further illnesses. We promote wellness, by teaching the patients we serve, about the purpose of that particular medication. We teach and instruct them, on how the medication works, to help to cure the sickness, and the need to comply with the course of actions.
Because of the knowledge gained, as a nurse to practice, we are able to help that patient, maintain their health, because, we are able to teach them that, that course of antibiotics, need to be taken for the full amount of days, even if they are feeling better.
We practice the nursing process, by finding out what is wrong(assessment) formulates a diagnosis, do further research as necessary, recognize our problems, then formulate the interventions, begin to treat, evaluate the effectiveness of any therapy used to assess the success/outcome of the goal. This in a way, is a means of problem solving, to continue to promote good health, while, involving the family, using everyone as a “unit”

The theory