NLE Fundamentals of Nursing & the Nursing Process — Introduction to Professional Nursing & Nursing TheoriesSummary

Nursing is simultaneously a science (grounded in research, theory, and evidence-based practice) and an art (compassionate, individualized, humanistic care). Florence Nightingale defined nursing as the act of putting the patient in the best condition for nature to act upon them. Virginia Henderson, whose definition is the most widely cited in NLE, defined nursing as assisting the individual, sick or well, in performing activities contributing to health, recovery, or a peaceful death—activities the person would perform unaided if they had the necessary strength, will, or knowledge. The American Nurses Association (ANA) defines nursing as the protection, promotion, and optimization of health and abilities; prevention of illness and injury; alleviation of suffering through diagnosis and treatment of human responses; and advocacy in care of individuals, families, communities, and populations. Each definition emphasizes the holistic, patient-centered, and health-promoting nature of the profession.

Nursing evolved through distinct historical periods: the intuitive/early period (care driven by instinct and folk practice), the religious/apprente period (medieval care by religious orders, followed by the 'Dark Ages of Nursing' after the Reformation), and the Nightingale era. Florence Nightingale (1854, Crimean War) revolutionized nursing through sanitation, statistical record-keeping, and environmental manipulation, reducing mortality dramatically and establishing the first formal nursing school at St. Thomas' Hospital, London (1860). In the Philippines, early care was rooted in traditional healing practices (herbolario, hilot). Formal nursing education began in the early 1900s, with the Iloilo Mission Hospital School of Nursing (1906) recognized as the first nursing school in the country, followed by St. Paul's and Philippine General Hospital. The Philippine Nurses Association (PNA), the accredited professional organization, was founded in 1922. This history demonstrates how nursing evolved from intuitive practice to evidence-based, regulated profession.

The professional nurse fulfills multiple interdependent roles: Caregiver (the central, direct-care role providing hands-on nursing interventions), Communicator (linking patient, family, and health team for continuity of care), Teacher/Health Educator (providing health education—a legally mandated independent function under RA 9173), Advocate (protecting patient rights, autonomy, and informed consent), Counselor (supporting coping and decision-making), Manager/Coordinator (organizing and delegating care), and Change Agent, Collaborator, Researcher, and Leader. Nursing functions are classified as: Independent (nurse-initiated actions such as assessment, health teaching, positioning, hygiene, establishing nursing diagnoses); Dependent (physician-ordered actions such as administering medications or performing treatments); and Interdependent/Collaborative (shared with other health professionals such as implementing standing protocols or multidisciplinary care planning). Under RA 9173, key independent nursing functions include health education, nursing care management during pregnancy/labor/delivery, and establishment of nursing diagnoses. These roles operate across all healthcare settings, from hospital wards to Rural Health Units delivering primary care.

The nursing metaparadigm comprises four central concepts common to all nursing theories, providing a framework for understanding how different theorists approach the discipline: (1) Person (Client)—the recipient of care, which may be an individual, family, community, or population; (2) Environment—the internal and external surroundings, including physical (temperature, light, sanitation), social (family, community), cultural (values, beliefs, practices), and economic factors affecting the person's health and healing; (3) Health—the degree of wellness or well-being experienced, ranging from illness to optimal functioning, viewed as a dynamic state rather than merely the absence of disease; (4) Nursing—the actions, characteristics, and attributes of the person giving care, including the nurse-patient relationship, interventions, and therapeutic use of self. Each major nursing theorist emphasizes these four concepts differently, which is why different theories offer complementary perspectives. For example, Nightingale emphasized environment, Henderson emphasized person and their basic needs, Orem emphasized person's self-care agency, and Roy emphasized the person's adaptive capacity.

Florence Nightingale (1820–1910) proposed that a clean, well-ventilated, quiet, and well-lit environment, with adequate nutrition, fresh air, and proper waste disposal, promotes natural healing and prevents disease. Her theory emerged from her experiences during the Crimean War, where she documented that mortality rates dropped significantly when sanitation practices improved, even though soldiers' medical diagnoses remained unchanged. Nightingale's key ideas include: environmental manipulation is nursing's primary focus; disease is partially preventable through environmental control; nursing should be based on observation and statistical data (she pioneered health statistics); the nurse's role is to create conditions that allow nature to heal the body. Her theory underemphasizes the person and emphasizes environment as the key to health. Modern applications include infection control practices, proper isolation techniques, safe patient handling to prevent falls, noise reduction in hospitals, and maintaining optimal temperature and humidity.

Virginia Henderson (1897–1996) identified 14 basic human needs that all individuals must meet to maintain health and function: (1) breathing normally, (2) eating and drinking adequately, (3) eliminating body wastes, (4) moving and maintaining desirable posture, (5) sleeping and resting, (6) choosing suitable clothing and dressing/undressing, (7) maintaining normal body temperature through suitable clothing and environment, (8) keeping the body clean and well-groomed and protecting skin integrity, (9) avoiding dangers in the environment and avoiding injuring others, (10) communicating with others to express emotions, needs, fears, or opinions, (11) worshipping according to one's faith, (12) working and accomplishing meaningful tasks, (13) playing and participating in recreation, (14) learning, discovering new facts, and satisfying curiosity. Henderson's key concept is that the nurse's role is to help the patient meet these needs and regain independence. She described nursing assistance as substitutive (nurse does it for the patient), supplementary (nurse helps the patient), or complementary (nurse works alongside the patient). The goal is always to return the patient to independence. Henderson's definition emphasizes the person and their functional abilities—a major paradigm shift toward patient-centered care.

Dorothea Orem (1914–2007) developed a comprehensive theory of self-care encompassing three interrelated theories: (1) Self-Care Theory—individuals perform deliberate actions (self-care activities) to maintain health and well-being; self-care capacity varies with age, developmental stage, experience, and available resources; (2) Self-Care Deficit Theory—nursing is required when the patient has a deficit between their self-care capability and their therapeutic self-care demands (the actions needed to maintain health); when a patient is ill, injured, or disabled, their self-care demands may exceed their ability to meet them, creating a deficit that requires nursing intervention; (3) Nursing Systems Theory—Orem identified three types of nursing systems based on the magnitude of the self-care deficit: Wholly Compensatory (the nurse performs all self-care activities for the patient, such as with comatose patients or those requiring total care), Partly Compensatory (nurse and patient share responsibility for self-care, such as when a post-operative patient can ambulate but needs wound care), and Supportive-Educative (the patient can meet most self-care needs independently but requires nursing education, encouragement, or decision-making support). Orem's theory emphasizes promoting the patient's self-care agency (capability)—the ultimate goal is to enhance patient independence, not create dependency.

Sister Callista Roy (b. 1939) views the person as an adaptive system responding to internal and external stimuli. Roy identified three types of stimuli: (1) Focal stimulus—the immediate cause or circumstance demanding adaptation (e.g., fever, pain, hospitalization); (2) Contextual stimuli—all other factors influencing the situation (e.g., comorbidities, family support, culture, economic status); (3) Residual stimuli—factors whose effects are unclear in a specific situation but may influence adaptation (e.g., past experiences, previous coping patterns). Adaptation occurs through four modes: (1) Physiologic Mode—physical responses to stimuli including oxygenation, nutrition, elimination, activity/rest, protection, senses, and fluid/electrolyte balance; (2) Self-Concept Mode—psychological and spiritual identity including physical self-image and personal identity; (3) Role Function Mode—social roles and relationships (family member, worker, student, patient); (4) Interdependence Mode—interactions, relationships, and support networks. Roy's nursing goal is to promote adaptation across all four modes by enhancing the patient's ability to cope with stimuli. She uses the nursing process to assess adaptation level, identify maladaptive responses, intervene to promote adaptation, and evaluate adaptive outcomes.

Jean Watson (b. 1940) emphasizes caring as the essence and moral ideal of nursing, centered on the transpersonal caring relationship between nurse and patient. Watson defined 10 carative factors (later reframed as 10 Caritas processes in her updated model): (1) Forming humanistic-altruistic system of values, (2) instilling faith-hope, (3) cultivating sensitivity to self and others, (4) developing a helping-trusting relationship, (5) promoting expression of positive and negative feelings, (6) using creative problem-solving methods, (7) promoting transpersonal teaching-learning, (8) providing a supportive, protective environment, (9) recognizing spiritual/existential needs, (10) assisting with gratification of needs. Watson's caring moment (the caring occasion)—the interaction between nurse and patient—is where healing and growth occur. Her theory emphasizes the therapeutic use of self, presence, compassion, and authentic connection. Watson critiques the overmedicalization of nursing and calls for return to caring as nursing's fundamental purpose. She emphasizes that nurses provide care beyond the biomedical model, attending to the whole person and their humanity.

Hildegard Peplau (1909–1994), known as the 'mother of psychiatric nursing,' developed the Interpersonal Relations Theory, which views nursing as a therapeutic interpersonal process. Peplau described the nurse-patient relationship evolving through distinct phases: (1) Orientation phase—nurse and patient become acquainted, nurse clarifies expectations, establishes trust, and roles are defined; patient experiences anxiety and seeks information; (2) Identification phase (Working phase)—patient develops trust and feels understood; nurse responds to patient's needs and feelings; therapeutic work occurs; (3) Exploitation phase—patient uses available services and resources most effectively; patient becomes invested in the relationship; (4) Resolution phase (Termination)—relationship is concluded as patient gains independence; feelings of loss may emerge; nurse-patient bond gradually diminishes. Peplau also identified nursing roles: stranger (initial role, providing courteous care), resource person (providing specific information), teacher (providing education), leader (guiding decisions), surrogate (substituting for family or authority figures), and counselor (helping with emotional concerns). Her theory emphasizes communication, active listening, empathy, and the understanding that the relationship itself is therapeutic.

Several other nursing theorists contribute high-yield NLE content: Madeleine Leininger (Transcultural Nursing/Culture Care Theory)—emphasizes that nursing must be culturally congruent; culturally-sensitive care respects diverse health beliefs, practices, and values; three modes of intervention are cultural preservation, accommodation/negotiation, and restructuring. Patricia Benner (Novice to Expert)—describes skill acquisition progressing through five stages: (1) Novice (follows rules, limited experience), (2) Advanced Beginner (recognizes patterns, marginal performance), (3) Competent (organized, efficient, requires conscious effort), (4) Proficient (sees situations holistically, acts intuitively), (5) Expert (operates from deep understanding, intuitive grasp). Betty Neuman (Systems Model)—views person as an open system interacting with internal and external stressors; identifies lines of defense: flexible (adaptable), normal (usual state), and resistance (internal coping mechanisms); nursing prevents stressor invasion or manages reactions. Faye Abdellah (21 Nursing Problems)—identifies 21 nursing problems requiring nursing care (breathing, pain, nutrition, elimination, sleep, safety, hygiene, communication, relationships, spiritual needs, and others); patient-centered problem-solving approach. Lydia Hall (Care, Core, Cure model)—nursing involves care (nurturing, comfort), core (psychotherapeutic, counseling), and cure (procedures, treatments); overlap among these three dimensions creates professional nursing.

Professional nursing is grounded in bioethical principles that guide decision-making and protect patient welfare. Core principles include: (1) Autonomy—respect for persons' right to self-determination, informed consent, and decision-making; requires that patients receive sufficient information to make choices free from coercion; (2) Beneficence—the obligation to do good, to promote patient welfare and implement beneficial interventions; (3) Nonmaleficence—the obligation to do no harm, to avoid causing injury or suffering; (4) Justice—fairness in the distribution of healthcare resources, benefits, and burdens; treating similar cases similarly; (5) Veracity—truthfulness in communication; avoiding deception; (6) Fidelity—keeping commitments, promises, and maintaining trust; (7) Confidentiality—protecting patient information and privacy; not disclosing personal health information without consent. In the Philippines, the Code of Ethics for Filipino Nurses (promulgated by the Board of Nursing) operationalizes these principles within cultural and social context. RA 9173 (Philippine Nursing Act of 2002) legally defines nursing practice, establishes the Board of Nursing under the PRC, and sets standards for licensure and conduct. RA 10173 (Data Privacy Act of 2012) specifically protects personal information including health data. Violations of these ethical and legal standards may result in license suspension or revocation, disciplinary action, or criminal charges.

Republic Act No. 9173, the Philippine Nursing Act of 2002, is the legal foundation for nursing practice in the Philippines. Key provisions include: (1) Definition and scope of nursing practice—describes nursing as the provision of professional nursing care through independent, collaborative, or dependent functions in all healthcare settings; (2) The Board of Nursing—established under the Professional Regulation Commission (PRC) to regulate nursing practice, including licensure examination, enforcement of standards, and disciplinary actions; (3) Licensure requirements—candidates must complete a BSN from recognized institutions, pass the NLE administered by BON/PRC, and take the professional oath; (4) Independent nursing functions—include assessment, nursing diagnosis, health teaching, and nursing care during specific situations (pregnancy, labor, delivery, newborn care); (5) Continuing Professional Development (CPD)—mandatory for license renewal; demonstrates commitment to current knowledge and competence; (6) Scope of practice—nurses may practice in multiple settings (hospitals, communities, schools, industry, military, private duty); may serve as clinical instructors, researchers, administrators, and leaders; (7) Grounds for disciplinary action—unprofessional or unethical conduct, incompetence, violation of standards, conviction of offenses involving moral turpitude, or practice without valid license; (8) Board composition and qualifications—members must be licensed nurses with advanced education and practice experience.

The three levels of prevention represent a framework for organizing nursing and public health interventions across the disease spectrum: (1) Primary Prevention—prevents disease or health problems before they occur; examples include immunization programs (EPI), health education on nutrition and exercise, environmental sanitation, occupational safety measures, accident prevention, water fluoridation, health promotion for specific vulnerable groups; primary prevention addresses risk factors and promotes healthy behaviors; emphasis on health maintenance and disease prevention; (2) Secondary Prevention—focuses on early detection and prompt treatment to identify and manage disease in its earliest stages before symptoms become severe; examples include screening programs (BP screening for hypertension, Pap smears for cervical cancer, TB screening, mammography), health assessments, periodic physical examinations, blood glucose screening, early referral and treatment; emphasis on limiting disease progression; (3) Tertiary Prevention—aims to limit disability and complications from existing disease and promote rehabilitation and restoration of function; examples include physical therapy after stroke, cardiac rehabilitation programs, diabetes management to prevent complications, psychological support for chronic illness, assistive devices, functional training. In the Philippine DOH system, nurses implement all three levels: primary prevention through Barangay Health Stations and immunization campaigns; secondary prevention through screening programs and early case-finding; tertiary prevention through rehabilitation services and chronic disease management.

Health teaching is a core independent nursing function under RA 9173 and essential to all patient care. Effective health teaching requires understanding three learning domains: (1) Cognitive Domain—mental knowledge and understanding; teaching methods include lecture, discussion, reading materials, videos; assess by asking questions, quizzes, or written tests; examples: teaching about medication side effects, disease process, dietary requirements; (2) Affective Domain—attitudes, values, feelings, and motivations; teaching methods include role-modeling, discussion, group interaction, reflective conversation; assess through observation of attitudes, willingness to participate, expressed values; examples: building confidence for self-care, accepting lifestyle changes, managing fear/anxiety about procedures; (3) Psychomotor Domain—physical skills and abilities; teaching methods include demonstration, practice, return demonstration, guided practice; assess through observation of skill performance or return demonstration; examples: injection technique, wound care, physical exercise, use of medical equipment. Effective teaching also requires: (1) Assessing readiness to learn—physical comfort, pain control, emotional state, developmental stage, presence of barriers; (2) Using culturally appropriate language and literacy level—especially important in multilingual Philippine context; (3) Involving family members and support systems; (4) Using multiple teaching methods to accommodate different learning styles; (5) Teaching in small segments to prevent overwhelming learner; (6) Providing written materials in patient's preferred language; (7) Evaluating learning through teach-back method (patient explains back to you) or return demonstration.

Nursing meets criteria of a true profession, distinguished from occupations by specific characteristics: (1) A defined body of knowledge and theory—grounded in biological, social, and behavioral sciences; supported by nursing research and evidence-based practice; (2) Formal education—structured curriculum in accredited institutions (BSN programs); emphasis on both theory and clinical practice; prerequisites and progression requirements; (3) A code of ethics—moral standards guiding professional conduct; Code of Ethics for Filipino Nurses establishes professional values and accountability; (4) Autonomy and accountability—nurses make independent decisions within scope of practice; accountable for their actions and professional conduct; RA 9173 legally establishes nursing's independent functions; (5) Service orientation to society—primary commitment to public welfare, not just individual profit; dedication to health promotion and illness prevention; (6) Professional organization—Philippine Nurses Association (PNA), accredited by PRC, represents nurses' interests and advances the profession; provides advocacy, networking, continuing education; (7) Licensure and regulation—NLE ensures minimum competency; Board of Nursing enforces standards; license renewal with CPD demonstrates ongoing competence; (8) Continued development—commitment to lifelong learning, research, and advancing practice through evidence, innovation, and specialization. Professionalization is reinforced by CPD requirements, research contribution, and engagement in professional organizations.

Nightingale's foundational work on environmental sanitation (clean, well-ventilated spaces; proper waste disposal; orderliness) directly evolved into modern infection control practices. When you implement standard precautions, maintain clean patient environments, ensure proper ventilation in healthcare facilities, and manage waste safely, you are applying Nightingale's principles. Her use of statistical data to demonstrate that mortality decreased with sanitation improvements—even before germ theory was fully understood—established the scientific basis for evidence-based nursing practice. In Philippine healthcare settings, Nightingale's principles underpin infection prevention programs, environmental safety protocols, and the physical design of Rural Health Units and hospital wards.

Henderson's 14 basic needs framework directly translates to the assessment phase of the nursing process. When you assess a patient, you are systematically evaluating their ability to meet each of these 14 needs and identifying which are compromised. Care planning then focuses on nursing interventions to help the patient meet unmet needs through substitutive, supplementary, or complementary assistance. For example, if a post-operative patient cannot walk independently (need for movement), you provide mobility assistance initially and gradually promote independence through ambulation training. Henderson's framework ensures comprehensive care addressing the whole person rather than only the acute medical problem, which aligns with holistic nursing and Maslow-based prioritization of needs.

Orem's theory provides the conceptual framework for discharge planning and determining when patients are ready to transition from hospital to home care. During hospitalization, patients may require wholly compensatory or partly compensatory nursing systems. As they recover or learn to manage their condition, the nursing system transitions to supportive-educative, with the nurse teaching self-care activities and coaching independence. Discharge occurs when the patient (or family caregiver) has sufficient self-care knowledge, skill, and motivation to meet therapeutic self-care demands at home. This framework ensures patients are not discharged prematurely or kept dependent on nursing care longer than necessary. In community settings (RHUs, home health), the supportive-educative system predominates as nurses enable communities to manage health independently.

While Orem's theory focuses on self-care capacity, Roy's Adaptation Model broadens assessment to include how patients adapt across four dimensions (physiologic, self-concept, role function, interdependence). A patient with a myocardial infarction, for example, must adapt physiologically (altered cardiac output), psychologically (fear, identity as 'heart patient'), socially (role changes as worker/provider, family relationships), and spiritually (existential questions about mortality). Using Roy's framework, you recognize that effective nursing addresses all four modes. Facilitating physiologic adaptation alone (medication, monitoring) while ignoring psychological distress or role concerns results in incomplete care. Roy's model complements other theories by emphasizing the multidimensional nature of health challenges and adaptation.

Watson's emphasis on the caring moment and transpersonal relationship informs how you communicate with patients. Rather than viewing communication as simply conveying information, Watson's theory recognizes that your presence, empathy, attentiveness, and authentic connection have healing power. When you listen fully to a patient's concerns, acknowledge their fears, hold their hand during a procedure, or provide encouragement, you are providing therapeutic care beyond medical treatment. This caring is especially important in Philippine healthcare where nurses often provide emotional and spiritual support given cultural values around family, faith, and relationships. Watson's theory validates that these caring actions are professional nursing, not just 'nice' extras, and directly contribute to healing and well-being.

Peplau's framework helps you understand and navigate common relationship challenges. In the orientation phase, patients may be anxious, guarded, or dependent—this is normal, not a sign of poor adjustment. During the working phase, patients may become demanding, critical, or express strong emotions as trust deepens—these are opportunities for therapeutic work, not problems to avoid. In the termination phase, patients may regress, become withdrawn, or resist discharge—recognizing this as a normal phase helps you plan appropriate interventions rather than misinterpreting withdrawal as depression or resistance as non-compliance. Understanding Peplau's phases makes you more therapeutic and prevents relationship rupture. This is especially valuable in ongoing community health relationships where you see patients repeatedly.

Leininger's theory recognizes that health beliefs, healing practices, and responses to illness are culturally shaped. In the Philippines, nurses serve populations with diverse health beliefs—some rooted in Western biomedicine, others in traditional practices (herbal remedies, hilot, albularyo). Rather than dismissing traditional practices or imposing Western approaches, Leininger's framework guides culturally congruent care through three modes: cultural preservation (respect and maintain beneficial traditional practices), accommodation/negotiation (adapt interventions to fit cultural values while ensuring safety), and restructuring (gradually introduce new practices when current ones are harmful). For example, respecting family involvement in patient decision-making aligns with Filipino values of interdependence, while negotiating family participation in wound care ensures safety and family comfort. This approach improves patient compliance, trust, and outcomes.

Benner's Novice to Expert framework helps experienced nurses mentor new graduates appropriately. A novice graduate following rules and seeking guidance is developmentally appropriate, not deficient. Advanced beginners recognize patterns from repeated experience. Competent nurses work efficiently and are appropriately autonomous. Proficient and expert nurses demonstrate intuitive grasp of complex situations and make subtle judgments. As a new graduate preparing for the NLE and your nursing career, recognizing you are appropriately novice helps you seek learning opportunities without frustration about unfamiliar situations. As you progress in practice, Benner's framework guides your professional development—accumulating diverse experiences, gradually increasing autonomy, and developing expertise. This prevents both unsafe over-confidence in new graduates and underutilization of experienced nurses' expertise.

Understanding three prevention levels guides how you approach public health and disease management. For a health problem like type 2 diabetes, primary prevention (before disease onset) includes health education on nutrition, exercise, and weight management, targeting high-risk populations. Secondary prevention (early detection) includes blood glucose screening and early intervention when pre-diabetes or early diabetes is identified. Tertiary prevention (managing existing disease) includes medication management, dietary control, foot care to prevent complications, and rehabilitation after complications (e.g., physical therapy after stroke from diabetes). In Philippine DOH programs, comprehensive diabetes management addresses all three levels rather than only treating established disease. This comprehensive approach is more effective and cost-efficient than treating complications alone.

The seven bioethical principles guide decision-making when competing values conflict. For example, a patient with competence to make decisions chooses a treatment plan that nurses consider suboptimal—autonomy (respect their choice) conflicts with beneficence (provide what nurses believe is best). Understanding all seven principles and their interplay helps you navigate this thoughtfully. Respecting autonomy doesn't mean abandoning advocacy—you can provide thorough information and voice your professional perspective while ultimately honoring the patient's choice. Similarly, when resources are limited (justice), you cannot provide all beneficial interventions to all patients; you must allocate fairly based on need and outcomes. In the Philippines, where resources are limited and cultural values may emphasize family decisions over individual autonomy, applying these principles requires cultural sensitivity while maintaining fundamental protections.

RA 9173's legal framework guides your daily practice decisions. Understanding independent versus dependent versus interdependent functions clarifies what you can initiate without orders versus what requires physician collaboration. Health teaching is identified as independent—you teach without requiring physician orders. Nursing diagnosis is independent—you establish diagnoses based on nursing assessment without waiting for medical diagnosis. However, medication administration is dependent—requires physician orders. Certain functions (standing protocols, consultations) are interdependent. This clarity prevents practicing outside your scope (which exposes you to liability and disciplinary action) while ensuring you fully exercise your appropriate autonomy. CPD requirements reinforce that you must maintain current knowledge to practice safely—ignoring new evidence or standards violates the duty established by RA 9173.