Introduction to Nursing Theories and Models
Nursing theories provide a creative and systematic way of looking at nursing phenomena to describe, explain, predict, or prescribe care. A nursing theory is a set of concepts, definitions, and assumptions that project a systematic view of phenomena.
- Concept: A mental idea or image of a phenomenon.
- Model: A pattern that helps explain a concept or structure by presenting it in a manageable way.
- Proposition: A statement that explains the relationship between concepts.
Theory guides clinical judgment, shapes bedside practice, and establishes nursing as an independent profession distinct from medicine. Without theory, nursing risks becoming merely a collection of isolated technical skills rather than a holistic, structured science.
Florence Nightingale and the Environmental Theory
Florence Nightingale viewed nursing as distinct from medicine, focusing primarily on altering the physical environment to restore health. Her Environmental Theory emphasizes that a patient's surroundings significantly influence healing outcomes.
- Ventilation: Supplying fresh air without chilling the patient.
- Light: Providing adequate direct sunlight, which she considered essential for recovery.
- Cleanliness: Maintaining pure water, clean bedding, and proper drainage.
- Noise: Reducing unnecessary commotion and startling sounds.
- Nutrition: Monitoring dietary intake and timing.
Nightingale believed that nature heals the patient while the nurse acts to maintain optimal environmental conditions to facilitate that natural healing process.
Virginia Henderson: Definition of Nursing and the 14 Basic Needs
Virginia Henderson defined the unique function of the nurse as assisting the individual, sick or well, in the performance of those activities contributing to health or its recovery that they would perform unaided if they had the necessary strength, will, or knowledge. Her model centers on 14 basic human needs that form the foundation of nursing care plans.
- Breathing: Respiration and maintaining adequate gas exchange.
- Nutrition: Eating and drinking adequately.
- Elimination: Discharging body wastes.
- Movement: Maintaining desirable postures and mobility.
- Sleep: Resting and sleeping.
- Clothing: Selecting and wearing appropriate garments.
- Temperature: Maintaining normal body temperature through clothing and environment.
- Hygiene: Keeping the body clean and protecting the integument.
- Safety: Avoiding environmental hazards and injuring others.
- Communication: Expressing emotions, needs, fears, or opinions.
- Worship: Practicing one's religious faith.
- Work: Working in such a way that provides a sense of accomplishment.
- Recreation: Participating in forms of recreation or play.
- Learning: Discovering, satisfying curiosity, and utilizing available health facilities.
Dorothea Orem: Self-Care Deficit Nursing Theory
Dorothea Orem's theory explains that humans need self-care, which is the practice of activities that individuals initiate and perform on their own behalf to maintain life, health, and well-being. A self-care deficit occurs when there is a disparity between the demand for self-care and the agency of the individual.
Orem outlines three nursing systems:
- Wholly Compensatory: The nurse accomplishes the patient's therapeutic self-care.
- Partly Compensatory: Both the nurse and the patient perform measures of care.
- Supportive-Educative: The patient can and should learn self-care measures, with assistance from the nurse.
Nurses step in only when the patient's demand for self-care exceeds their ability to provide it.
Application of Nursing Models in Nigerian Clinical Practice
Applying Western-derived nursing theories in Nigerian clinical settings requires cultural adaptation. While concepts like Henderson's basic needs and Orem's self-care are universal, factors such as extended family involvement, traditional beliefs, and resource constraints shape how care is delivered.
- Family Participation: In Nigerian hospitals, relatives often assist with feeding, hygiene, and mobilization, aligning with supportive-educative and compensatory models.
- Resource Limitations: Nurses frequently improvise environmental controls (Nightingale) due to power outages or lack of equipment, while still pursuing patient safety and cleanliness.
- Holistic Care: Cultural norms regarding spirituality and community demand that Nigerian nurses address emotional, religious, and social needs alongside physiological care.
Integrating these models helps bridge the gap between textbook knowledge and bedside realities in primary, secondary, and tertiary health institutions across Nigeria.