La valoración clínica es el primer paso del proceso enfermero. Permite recopilar datos objetivos y subjetivos para identificar los problemas de salud, establecer prioridades y planificar intervenciones. Una valoración precisa y sistemática es la base de los cuidados enfermeros seguros.
- Datos subjetivos (síntomas): lo que el paciente describe — dolor, fatiga, náuseas; recogidos mediante la entrevista
- Datos objetivos (signos): lo que la enfermera observa y mide — constantes vitales, resultados de laboratorio, aspecto clínico
- PQRSTU para el dolor: Provoca/Palía, Calidad, Región/Irradiación, Severidad, Tiempo/Tratamiento, Understanding (comprensión del paciente)
- Constantes vitales: temperatura, pulso, frecuencia respiratoria, presión arterial, SpO₂, dolor (6.ª constante vital)
- Valoración sistemática: de cabeza a pies o por sistemas — sistemática para no omitir nada
Health Assessment Foundations
Master the foundations of patient assessment including subjective vs objective data collection, IPPA techniques, systematic head-to-toe assessment, vital signs interpretation, documentation methods, and recognition of critical red flags.
Subjective vs Objective Data
Understanding the two pillars of assessment
Every nursing assessment collects two fundamental types of data. Distinguishing between them is essential for accurate documentation, clinical reasoning, and communication with the healthcare team.
Subjective Data (Symptoms)
Information reported by the patient that cannot be independently verified. Includes chief complaint, history of present illness, pain descriptions, emotional state, cultural beliefs, and past medical/surgical history. Use open-ended questions first ('Tell me about your pain'), then focused questions ('Where exactly does it hurt?'). Document using the patient's own words in quotation marks.
Objective Data (Signs)
Observable, measurable findings obtained through physical examination, vital signs, laboratory results, and diagnostic imaging. Examples: heart rate 102 bpm, 2+ pitting edema bilateral ankles, crackles in bilateral lung bases, WBC 14,200/mm³. Objective data is verifiable by any qualified examiner and forms the basis for clinical decision-making.
Subjective vs Objective Distinction
Subjective data is information reported by the patient, symptoms, feelings, perceptions, and history. Only the patient can provide this data (e.g., 'I feel dizzy,' 'My pain is 7/10'). Objective data is observable, measurable information obtained through examination, diagnostic tests, and direct observation (e.g., BP 148/92, temperature 38.5°C, crackles auscultated in lung bases). The distinction matters because nursing diagnoses and clinical decisions require both types of data to form a complete clinical picture.
IPPA Techniques
Inspection, Palpation, Percussion, Auscultation
IPPA represents the four systematic techniques used in physical examination, always performed in this specific order (except for the abdomen, where auscultation precedes palpation and percussion to avoid altering bowel sounds).
The Four Assessment Techniques
Exception: Abdominal Assessment Order
For the abdomen, the order changes to Inspection → Auscultation → Percussion → Palpation. Auscultation must precede palpation and percussion because touching the abdomen can stimulate or diminish bowel sounds, producing inaccurate findings. This is a commonly tested concept on nursing exams.
Vital Signs Interpretation
The foundation of every patient assessment
Vital signs, temperature, pulse, respirations, blood pressure, and oxygen saturation (the 'fifth vital sign'), provide baseline data and indicate physiological status. Trends in vital signs are more clinically significant than single readings.
Normal Adult Vital Sign Ranges
Orthostatic Vital Signs
Measure BP and HR lying, sitting, and standing (wait 1-3 minutes between position changes). Orthostatic hypotension is defined as a drop in systolic BP ≥20 mmHg or diastolic BP ≥10 mmHg, or an increase in HR ≥20 bpm upon standing. Causes include dehydration, blood loss, medication effects (antihypertensives, diuretics), and autonomic dysfunction. Always ensure patient safety during positional changes.
Head-to-Toe Assessment & Documentation
Systematic approach and accurate recording
A systematic head-to-toe assessment ensures no body system is missed. The standard approach moves cephalocaudal (head to toe) and proximal to distal. Document findings accurately using standardized terminology and approved abbreviations.
Head-to-Toe Assessment Order
1. General survey:Overall appearance, body habitus, hygiene, level of consciousness, gait
2. Neurological:LOC (Glasgow Coma Scale), orientation (person/place/time/situation), pupil response (PERRLA), cranial nerves, sensation, motor strength
3. Head/Face:Skull symmetry, facial expression, TMJ, sinuses
4. Eyes/Ears/Nose/Throat:Visual acuity, hearing, nasal patency, oral mucosa, tonsils
5. Neck:Lymph nodes, thyroid, jugular vein distention (JVD), carotid pulses, tracheal midline
6. Chest/Lungs:Respiratory effort, breath sounds all fields, chest expansion symmetry
7. Cardiovascular:Heart sounds (S1/S2), rhythm, PMI, peripheral pulses, capillary refill, edema
8. Abdomen:Inspect → Auscultate → Percuss → Palpate; bowel sounds, distention, tenderness
9. Musculoskeletal:ROM, strength, gait, joint swelling or deformity
10. Integumentary:Skin color, turgor, moisture, lesions, wound assessment, pressure injury risk
11. Extremities:Pulses, edema, sensation, skin integrity, IV sites
Documentation Methods
SOAP notes organize documentation into Subjective (patient's report), Objective (measurable findings), Assessment (clinical judgment/diagnosis), and Plan (interventions). Focus charting uses DAR: Data (subjective + objective), Action (nursing interventions), and Response (patient outcomes). Narrative charting tells the story chronologically but can be disorganized. Exception-based charting documents only deviations from normal, saving time but risking missed documentation. Always document assessment findings promptly, accurately, and objectively, avoid subjective language like 'patient seems fine.'
Red Flags Requiring Immediate Action
Red flags are assessment findings that require immediate intervention or escalation. Key red flags include: sudden change in level of consciousness (stroke, hypoglycemia, increased ICP), new-onset chest pain with diaphoresis (MI), respiratory distress with SpO2 < 90% (respiratory failure), systolic BP < 90 mmHg (shock), unilateral weakness or speech changes (stroke), rigid/board-like abdomen (peritonitis), and asymmetric pupils (increased ICP, herniation). When you identify a red flag, stop the routine assessment and activate the appropriate emergency response.
Match the Assessment Concept
Terms
Definitions
Health Assessment Quiz
1/20A patient states, 'I feel like my heart is racing.' This is an example of:
Nursing Responsibilities
La enfermera recoge los datos de forma estructurada, prioriza según la urgencia, documenta con precisión y objetividad, y comunica las anomalías al equipo médico. Utiliza herramientas validadas (escala de dolor, Glasgow, Braden) y repite las valoraciones para seguir la evolución. Tiene en cuenta el contexto cultural y adapta su comunicación.
Clinical Pearls
Los valores normales varían según la edad — la taquicardia en un lactante (hasta 160/min es normal) no es lo mismo que en un adulto. Una presión arterial 'normal' para un paciente hipertenso crónico puede ser hipotensión para él. Documente siempre las tendencias, no solo los valores aislados — una PA que cae progresivamente de 150/90 a 100/60 en 2 horas es más alarmante que un valor único.
Patient Education
Explique a los pacientes cómo monitorizar sus propias constantes vitales en domicilio si es pertinente (tensiómetro, pulsioxímetro). Enséñeles a describir sus síntomas con precisión (localización, intensidad, duración, qué los agrava o alivia) para facilitar las consultas. Anímeles a notificar cualquier cambio nuevo o inusual.
Key Takeaways
- La valoración sistemática (de cabeza a pies) previene omisiones — establezca una rutina y sígala
- Documente las tendencias y la evolución en el tiempo, no solo los valores puntuales
- Los datos subjetivos (síntomas) y objetivos (signos) se complementan — no ignore lo que el paciente siente
- Las constantes vitales básicas incluyen ahora el dolor como 6.ª constante — valórelo sistemáticamente