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The model itself consists of sixteen core concepts: eight patient characteristics and eight nurse competencies. [1] Each of these characteristics and competencies is classified on one of three levels, ranging from minimal complexity to highly complex for patients and competent to expert for nursing.
The central concept of Levine's theory is conservation. [5] When a person is in a state of conservation, it means that individual has been able to effectively adapt to the health challenges, with the least amount of effort. Myra Levine described the Four Conservation Principles. These principles focus on conserving an individual's wholeness:
Kolcaba's theory successfully addresses the four elements of nursing metaparadigm. [3] Providing comfort in physical, psychospiritual, social, and environmental aspects in order to reduce harmful tension is a conceptual assertion of this theory. [3] When nursing interventions are effective, the outcome of enhanced comfort is attained. [2]
In holistic nursing, taking care of the patient does not differ from other nursing, but is focused on mental and spiritual needs as well as physical health. [1] In holistic nursing there should be a therapeutic trust between the patient and nurse, as caring holistically involves knowing the patient's illness as whole.
More recently, she states that health is the process of being and becoming an integrated and whole person. [1] Roy's goal for nursing is "the promotion of adaptation in each of the four modes, thereby contributing to the person's health, quality of life and dying with dignity". [1]
The Andersen healthcare utilization model is a conceptual model aimed at demonstrating the factors that lead to the use of health services. According to the model, the usage of health services (including inpatient care, physician visits, dental care etc.) is determined by three dynamics: predisposing factors, enabling factors, and need.
Mind - The energy and intelligence that animates all life, both in its physical form and in the formless. The Universal Mind, often referred to as "wisdom" or the "impersonal" mind, is constant and unchanging, acting as the source of innate health and well-being. In contrast, the personal mind is in a continuous state of flux.
The Helvie Energy Theory of Nursing and Health is a nursing theory developed by Carl O. Helvie's lifelong cross-cultural exposure to various ways of assessing, planning, implementing and evaluating health with application to individuals, families, and to specific communities across the world.