How are the three theories related?
The theory of self care delineates the demands of self-care requisites that an individual needs to meet in order to stay healthy or get better from illness. When a person cannot meet these self-care demands, or when self-care requisites exceeds self-care capabilites, nursing is needed. Nurses can help patients meet their self-care needs by utilizing the 5 methods in the Theory of Self Care Deficit. However, the nurse must properly assess the level of self-care a patient requires so that the nurse can utilize the nursing system (as stated in the Theory of Nursing System) that best fits the patient's ability to perform self-care. In the end, the nurse assists the patient in meeting his/her self-care needs so that he/she is healthy and free of illness.