NLE Fundamentals of Nursing & the Nursing Process — The Nursing Process (ADPIE)Summary

A five-phase systematic, cyclic, and dynamic problem-solving framework that is patient-centered and goal-directed. ADPIE stands for Assessment (collecting data), Diagnosis (analyzing and naming problems), Planning (setting goals and interventions), Implementation (executing the plan), and Evaluation (measuring outcomes). The process is not linear; evaluation feeds back into reassessment, creating a continuous cycle of improvement. This framework is the professional standard under RA 9173 and applies universally to all nursing settings and patient ages.

Assessment is the deliberate, organized collection of health information from the patient and environment. It forms the foundation of all subsequent decisions; errors in assessment cascade through the entire process. Assessment involves four main steps: (1) collecting data through interview, physical examination, and observation; (2) validating data to ensure accuracy and distinguish cues from inferences; (3) organizing and clustering data into meaningful patterns; and (4) documenting findings. There are four types of assessment: initial/comprehensive (complete baseline on admission), focused/problem-oriented (targeting a specific issue), emergency (rapid ABCs in crisis), and ongoing/time-lapsed (periodic reassessment to track change).

Subjective data (also called symptoms or covert data) are what the patient reports—feelings, perceptions, sensations, and concerns that only the patient can provide. Examples: 'I feel dizzy,' 'pain in my chest,' 'I haven't slept in two days.' Objective data (also called signs or overt data) are observable, measurable findings that the nurse directly perceives: blood pressure 150/90 mmHg, respiratory rate 28/min, cyanosis of the lips, grimacing, temperature 38.5°C. Both types are essential; together they provide the complete clinical picture. When documenting, quote the patient for subjective data and report measurements/observations for objective data.

Physical examination uses four techniques in a specific order: inspection (observing), palpation (feeling with hands), percussion (tapping and listening), and auscultation (listening with a stethoscope). For most body systems, the sequence is inspect → palpate → percuss → auscultate. HOWEVER, for the abdomen, the sequence is different and MUST be memorized: inspect → auscultate → percuss → palpate. This abdominal exception exists because palpation and percussion can alter bowel sounds, leading to false auscultatory findings. The nurse performs the abdominal exam in the correct order to avoid confusing actual bowel sounds with iatrogenic (nurse-induced) changes.

A cue is a piece of data that the nurse perceives directly through the senses—objective findings or what the patient explicitly states. Examples: 'The patient states, I have severe pain' (subjective cue); the nurse observes the patient grimacing and holding the abdomen (objective cue); BP is 90/60 mmHg (cue). An inference is the nurse's interpretation, analysis, or judgment based on one or more cues. Example: The cues are grimacing, held abdomen, and patient-reported severe pain; the inference might be 'The patient is in acute pain.' Sound clinical reasoning validates cues before drawing inferences and avoids jumping to conclusions. Many diagnostic errors stem from making inferences without adequate supporting cues.

A nursing diagnosis is a clinical judgment about the patient's response (not the disease itself) to actual or potential health problems or life processes. Nursing diagnoses are distinct from medical diagnoses: a medical diagnosis names a disease (e.g., 'pneumonia') and remains constant, whereas a nursing diagnosis addresses human responses to the disease and may change as the patient's condition changes. Nursing diagnoses are formulated using NANDA-I (North American Nursing Diagnosis Association International) classifications. Four main types exist: (1) Actual/Problem-Focused—a problem present at assessment time; (2) Risk—vulnerability to a problem with risk factors but no current signs/symptoms; (3) Health-Promotion/Wellness—motivation to increase well-being; (4) Syndrome—a cluster of diagnoses occurring together. The nursing diagnosis is an independent nursing function and forms the basis for the care plan.

Actual nursing diagnoses are written in the three-part PES format: (P) Problem—the NANDA diagnosis label; (E) Etiology—the cause or contributing factor, stated as 'related to'; (S) Signs/Symptoms—the evidence supporting the diagnosis, stated as 'as evidenced by.' Example: Impaired gas exchange related to alveolar-capillary membrane changes as evidenced by SpO₂ of 88%, dyspnea, and use of accessory muscles. Risk nursing diagnoses are written in the two-part PE format: (P) Problem + (E) Risk factors; the phrase 'as evidenced by' is omitted because signs/symptoms have not yet occurred. Example: Risk for falls related to history of syncope, use of sedatives, and unsteady gait. The etiology should always be something the nurse can address through nursing interventions; if it is a medical condition (e.g., 'pneumonia'), the diagnosis format is incorrect.

Collaborative problems are potential complications that require both nursing and medical management. Examples include 'Potential complication: pulmonary embolism' or 'Potential complication: hemorrhage.' The nurse monitors for and reports these problems and manages them according to medical orders, but the nurse also applies independent nursing judgment. Collaborative problems differ from nursing diagnoses in that they always involve physician involvement and are framed as 'potential complications' rather than using NANDA labels. Understanding the distinction helps the nurse clarify scope of practice: some patient responses are purely nursing diagnoses (independent), whereas others are collaborative.

Maslow's Hierarchy of Needs is used to prioritize patient problems systematically. From lowest to highest level of need: (1) Physiologic needs—airway, breathing, circulation, oxygenation, nutrition, fluids, elimination, rest, sleep; (2) Safety and security—protection from harm, safe environment; (3) Love and belonging—relationships, social interaction; (4) Self-esteem—respect, dignity, competence; (5) Self-actualization—self-fulfillment, reaching one's potential. When prioritizing, address lower-level (physiologic) needs before higher-level needs. Within physiologic needs, use the ABC principle: Airway (always first) → Breathing → Circulation. Combine Maslow with acuity logic: actual problems before potential, acute before chronic. A patient with both breathing difficulty (physiologic, ABCs) and social isolation (love/belonging) would be prioritized for the breathing problem first.

The ABC principle is a subset of Maslow's Hierarchy and applies specifically to physiologic needs in emergency or acute situations. Airway is always the highest priority—an obstructed airway is immediately life-threatening. Breathing (oxygenation and ventilation) is second—a patient with respiratory distress requires intervention before a patient with a cardiac dysrhythmia (assuming no complete circulatory arrest). Circulation (heart rate, blood pressure, perfusion) is third. If a patient has both airway obstruction and no pulse, the nurse would manage airway first, then check circulation. ABC ensures life-saving interventions occur in the correct sequence. This principle applies even more urgently than general Maslow prioritization in emergencies.

Planning is the third phase, during which the nurse establishes priorities, sets goals/outcomes, and selects nursing interventions. Planning occurs in three types: initial (after first assessment), ongoing (continuous updates), and discharge (started on admission for continuity). Goals and outcomes should be SMART: Specific (clear and detailed), Measurable (observable, quantifiable), Attainable (realistic for the patient), Relevant (relevant to the diagnosis), and Time-bound (includes a target time frame). Goals must be patient-centered, not nurse-centered or disease-centered. Good outcome verbs are observable actions like 'ambulate,' 'verbalize,' 'demonstrate,' 'list,' 'eat'—not vague terms like 'understand,' 'know,' or 'feel.' Each outcome should include the subject (patient), the action verb, criteria/conditions, and a time frame. Example: 'The patient will walk 50 meters unassisted without dyspnea by day 3.' Nursing interventions are the specific actions the nurse takes to help the patient achieve outcomes; they should be evidence-based, safe, and within the nurse's scope.

SMART is a mnemonic for writing effective patient outcomes: Specific (clearly defined, not vague), Measurable (includes observable criteria and numbers if applicable), Attainable (realistic given the patient's status), Relevant (addresses the nursing diagnosis), and Time-bound (states when the goal should be achieved). Poor outcome: 'The patient will feel better by tomorrow.' Good outcome: 'The patient will report pain relief from current 8/10 to 4/10 or less within 2 hours of receiving analgesic.' The good outcome is specific (pain scale 4/10), measurable (pain score), attainable, relevant, and time-bound (2 hours). Goals are set with patient input when possible, supporting patient autonomy and engagement.

Implementation is the fourth phase—the actual carrying out of the planned nursing interventions. Before implementing, the nurse should reassess the patient to ensure conditions have not changed and the intervention is still appropriate. Implementation involves several key actions: (1) Reassess the patient; (2) Set priorities for the day; (3) Perform interventions safely, using correct technique and infection control; (4) Delegate appropriately using the five rights of delegation (right task, right circumstance, right person, right communication, right supervision); (5) Document immediately after the intervention (never before). Nursing actions during implementation are classified as independent (nurse-initiated, within the nurse's scope), dependent (physician-ordered, such as medications), or collaborative/interdependent (performed with other healthcare team members). The nurse always retains accountability for delegated tasks and must ensure the delegatee is competent.

Delegation is the assignment of a task to another person while retaining accountability for the outcome. The five rights of delegation ensure safe, appropriate task assignment: (1) Right Task—the task is within the delegatee's scope and is delegable (assessment, evaluation, teaching, and unstable-patient decisions are not delegated to unlicensed assistive personnel); (2) Right Circumstance—the patient's condition permits delegation (a stable patient on a monitor with a known problem, not a newly admitted or unstable patient); (3) Right Person—the delegatee has the knowledge, skills, and competence to perform the task; (4) Right Communication/Direction—the nurse clearly explains what is expected, how to perform it, when to report findings, and what complications to watch for; (5) Right Supervision/Evaluation—the nurse follows up to ensure the task was completed correctly and safely. The nurse is always responsible for the final outcome, even when delegating.

Evaluation is the fifth phase—comparing the patient's actual response against the stated outcome criteria to determine whether goals were met, partially met, or not met. During evaluation, the nurse gathers data about the patient's status, compares findings to the outcome statement, and makes a judgment. If a goal was met (e.g., 'Patient ambulated 50 meters unassisted' as planned), the outcome is documented as achieved and care may be discontinued or stepped down. If partially met (e.g., 'Patient ambulated 30 meters but required minimal assistance'), the nurse may continue interventions with modifications or adjust the time frame. If not met, the nurse must reassess, identify why the goal was not achieved, and revise the plan. This reassessment feeds back into the second assessment phase, making the process cyclic. Evaluation is not just about the patient's progress; it also examines the quality and appropriateness of the interventions themselves.

Critical thinking is the disciplined, reflective, rational reasoning that underpins sound clinical decisions throughout the nursing process. Key attributes of critical thinking include: (1) Rationality—decisions are based on logic and evidence, not assumptions; (2) Reflectiveness—the nurse questions findings, considers alternative explanations, and avoids jumping to conclusions; (3) Inquisitiveness—curiosity to learn more and seek additional data; (4) Intellectual honesty—acknowledging limitations and avoiding bias; (5) Open-mindedness—considering diverse perspectives and evidence. Related cognitive skills include: interpreting cues (what data mean), analyzing problems (breaking them into components), prioritizing (using frameworks like Maslow), and evaluating (judging the quality of outcomes). Critical thinking prevents diagnostic errors, improves safety, and ensures person-centered care. On the NLE, questions often test whether a nurse can identify the best action by thinking critically rather than choosing a common but incorrect action.

A core test strategy for the NLE is recognizing when to assess first versus when to intervene first. General rule: If the patient is stable, the nurse should assess first to gather data before acting—this guides the plan and prevents inappropriate intervention. Example: A patient reports mild abdominal discomfort; the nurse should assess (ask questions, perform abdominal exam) before deciding on intervention. Exception: In a true emergency or life-threatening situation, the nurse intervenes immediately without delay for full assessment. Examples: a patient with no airway or in cardiac arrest (start CPR immediately, don't assess first), a patient actively choking (perform Heimlich, don't assess), or a patient actively hemorrhaging (apply pressure, don't assess). Many NLE questions test this distinction by presenting scenarios and asking 'What should the nurse do first?' The correct answer is usually 'assess' (for stable patients) unless the scenario clearly indicates a life-threat.

Each phase of the nursing process must be documented to create a comprehensive, legal record of care. Documentation should be timely (ideally immediately after assessment or intervention), accurate, objective, specific, and complete. The nursing care plan (whether written, standardized, or electronic) should include: (1) Current assessment data; (2) Nursing diagnoses in PES or PE format; (3) Measurable outcomes; (4) Individualized nursing interventions with frequency and timing; (5) Evaluation notes indicating goal achievement and any revisions. In many Philippine healthcare facilities, standardized care plans and electronic health records (EHR) are now used, but the underlying ADPIE reasoning and documentation principles remain the same. Documentation serves multiple purposes: communication among the healthcare team, evidence of care provided, legal protection, and continuity across settings.

Republic Act No. 9173, the Revised Nursing Law of the Philippines, defines the scope of nursing practice and the professional responsibilities of registered nurses (RNs). Under RA 9173, the nursing process is recognized as the foundation of nursing practice. The law emphasizes that nursing is independent in its diagnosis and treatment of human responses to actual or potential health problems, in contrast to medicine, which diagnoses and treats diseases. RN roles include: (1) Direct care provision; (2) Health promotion and disease prevention; (3) Health restoration and rehabilitation; (4) Advocacy for the patient's rights and welfare; (5) Collaboration with the healthcare team. The nursing process aligns with these professional responsibilities, ensuring that nurses apply critical thinking and individualized care in compliance with the law. Understanding RA 9173 contextualizes the nursing process within Philippine professional nursing standards.

The nursing diagnosis is formulated based on data collected during assessment. If assessment is incomplete or inaccurate, the diagnosis will be incorrect. For example, if the nurse fails to assess the patient's pain level, positioning, and history, an incorrect diagnosis like 'Anxiety' might be made when the actual problem is 'Acute pain.' The relationship is linear: good assessment → accurate diagnosis; poor assessment → inaccurate diagnosis.

Once the nursing diagnosis is identified, goals and interventions are derived from the diagnosis. A patient with 'Ineffective airway clearance related to excess mucus' would have goals focused on airway patency and interventions such as suctioning, positioning, and humidification. A different diagnosis (e.g., 'Anxiety') would lead to entirely different goals and interventions. The diagnosis provides the focus and direction for planning.

The care plan created during planning provides the roadmap for implementation. The nurse implements the specific interventions written in the plan at the frequency and timing specified. Implementation without a solid plan leads to disorganized, ineffective care. The plan ensures consistency among all team members caring for the patient.

The nursing interventions performed during implementation are intended to achieve the goals/outcomes established during planning. For example, if the intervention is 'reposition patient every 2 hours,' the expected outcome is prevention or reduction of pressure ulcers. The effectiveness of implementation is measured by comparing actual patient outcomes to planned outcomes.

When evaluation reveals that goals were not met, the nurse returns to assessment to gather additional data, identify barriers to goal achievement, and determine why the plan was ineffective. This feedback loop creates the cyclic nature of the nursing process. For example, if the patient did not ambulate as planned, assessment might reveal new pain, weakness, or lack of motivation—all of which require reassessment and plan revision.

Maslow's Hierarchy is used during assessment to organize data (is the problem physiologic, safety, or higher-level?), during diagnosis to frame the problem, during planning to set priorities (physiologic needs before higher needs), during implementation to order interventions, and during evaluation to assess whether foundational needs were met before addressing higher-level concerns. Maslow provides a consistent framework across all phases.

Critical thinking underpins every decision in ADPIE. During assessment, critical thinking guides which data to collect and how to validate findings. During diagnosis, it ensures the nursing diagnosis is accurate and supported by evidence. During planning, it helps prioritize and select evidence-based interventions. During implementation, it prompts reassessment and safe practice. During evaluation, it determines whether care was effective and what changes are needed. Critical thinking is the cognitive thread connecting all phases.

During assessment, the nurse collects cues (direct observations and patient statements). Critical thinking involves validating these cues and drawing sound inferences (interpretations). Multiple validated cues support the inference and lead to a confident nursing diagnosis. Inferences without adequate cues are unreliable and lead to diagnostic errors. The strength of the diagnosis depends on the quality and quantity of supporting cues.