2.3 Vital Signs, Physical Assessment, and Documentation

The accurate measurement of vital signs, systematic physical assessment, and meticulous documentation are foundational nursing skills. They provide the objective data necessary to formulate nursing diagnoses, evaluate clinical interventions, and facilitate seamless multidisciplinary communication. In the Philippines, these practices are not only clinical requirements but are also legal and professional mandates under the Philippine Nursing Act of 2002 (RA 9173) and the Data Privacy Act of 2012 (RA 10173).

1. Vital Signs Physiology and Assessment Parameters

Vital signs reflect essential physiological functions. A change in vital signs often serves as the earliest indicator of clinical deterioration.

A. Thermoregulation Mechanisms

Body temperature is regulated by the hypothalamus, which acts as the body's thermostat.

• Hypothalamic Control: The anterior hypothalamus controls heat loss (triggering vasodilation, sweating, and behavior adjustments when body temperature rises). The posterior hypothalamus controls heat conservation and production (triggering vasoconstriction, shivering, and release of epinephrine to increase metabolic rate when core temperature drops).
• Heat Production: Regulated by basal metabolic rate (BMR), muscle activity (shivering), thyroid hormone release (thyroxine increases cellular metabolism), and chemical thermogenesis.
• Heat Loss Mechanisms:
  1. Radiation: Transfer of heat from the surface of one object to the surface of another without direct contact (e.g., heat lost to a cold room).
  2. Conduction: Transfer of heat from one object to another through direct contact (e.g., placing an ice pack on a febrile patient).
  3. Convection: Transfer of heat away by air currents (e.g., using a cooling fan).
  4. Evaporation: Conversion of liquid to vapor (e.g., diaphoresis; accounts for heat loss during sweating).

B. Pulse Assessment Parameters

Pulse is the palpable bounding of blood flow in a peripheral artery. It is assessed for four parameters:

• Rate: Tachycardia (>100 beats per minute) or Bradycardia (<60 bpm).
• Rhythm: Regular or irregular. If irregular, assess for pulse deficit—the difference between the apical and radial pulse rates when measured simultaneously by two nurses. A pulse deficit indicates that cardiac contractions are too weak to transmit a pulse wave to the periphery, commonly seen in atrial fibrillation.
• Volume/Amplitude (Force): Refers to the strength of the pulse, graded on a standard 0 to 4 scale:
  • 0: Absent, non-palpable.
  • 1+: Diminished, weak, thready (easy to obliterate).
  • 2+: Normal, expected (brisk, moderate pressure to obliterate).
  • 3+: Full, strong (difficult to obliterate).
  • 4+: Bounding (cannot be obliterated).
• Equality: Bilateral comparison to ensure equal perfusion.

C. Abnormal Respiratory Patterns

Nurses must recognize deviations in respiratory depth and rhythm:

• Tachypnea: Rapid, shallow breathing; rate >20 breaths per minute.
• Bradypnea: Slow breathing; rate <12 breaths per minute.
• Cheyne-Stokes Respirations: Rhythmic waxing and waning of breathing depth (hyperpnea/hyperventilation) alternating with periods of apnea. It is common in severe congestive heart failure, increased intracranial pressure (ICP), and during end-of-life care.
• Kussmaul's Respirations: Deep, rapid, sighing respirations without pause. This is a physiological compensatory mechanism to blow off carbon dioxide in patients with metabolic acidosis, classic in Diabetic Ketoacidosis (DKA).
• Biot's (Ataxic) Respirations: Shallow, irregular breaths interrupted by unpredictable periods of apnea. It is associated with severe brain injury and meningitis.

D. Blood Pressure (BP) Measurement Errors

Errors in technique lead to incorrect readings, affecting clinical decisions.

2. Physical Assessment Techniques and Sequence Exception

Physical assessment is a systematic head-to-toe examination.

Standard Techniques

1. Inspection: The visual examination of the patient. It must be systematic, checking for symmetry, color, size, shape, and position. Good lighting and proper exposure are critical.
2. Palpation: Using touch to assess temperature (dorsum of hand), vibration (ulnar surface or palmar base), turgor, texture, moisture, tenderness, and masses. Palpation can be light (1-2 cm depth) or deep (4-5 cm depth).
3. Percussion: Tapping body parts to produce sounds that indicate the density of underlying tissues.
   • Tympany: Loud, high-pitched, drum-like sound over air-filled organs (e.g., stomach, bowel).
   • Resonance: Clear, hollow sound over normal lung tissue.
   • Hyperresonance: Boom-like, very loud sound over hyperinflated lungs (e.g., emphysema).
   • Dullness: Medium-pitched, thud-like sound over dense organs (e.g., liver, spleen) or fluid.
   • Flatness: Soft, high-pitched, flat sound over bone or muscle.
4. Auscultation: Listening to internal body sounds. Use the diaphragm of the stethoscope for high-pitched sounds (e.g., normal heart sounds, bowel sounds, breath sounds) and the bell for low-pitched sounds (e.g., abnormal heart murmurs, vascular bruits).

The Critical Abdominal Exception

For all body systems, the sequence is: Inspection ➔ Palpation ➔ Percussion ➔ Auscultation. For the abdomen, the sequence must be: Inspection ➔ Auscultation ➔ Percussion ➔ Palpation.

• Clinical Rationale: Palpation and percussion mechanically stimulate the smooth muscle of the gastrointestinal tract, which alters the frequency and intensity of bowel peristalsis. Auscultating after palpation can lead to a false assessment of hyperactive or hypoactive bowel sounds. Additionally, palpating an area of pain or suspected aneurysm before inspecting or auscultating can cause severe discomfort or rupture.

3. Clinical Documentation Standards and Templates

Documentation is the formal communication of patient care. The golden rule of clinical practice is: "If it was not documented, it was not done."

A. SOAPIE Charting Template

This is a problem-oriented charting method that structures progress notes logically:

• S (Subjective): What the patient or family states.
• O (Objective): Measurable, observable data (vital signs, physical findings).
• A (Assessment): Nursing diagnosis or clinical conclusion drawn from data.
• P (Plan): What the nurse plans to do.
• I (Intervention): Actions performed.
• E (Evaluation): Patient response to interventions.

SOAPIE Clinical Example (Acute Pain):

S: "My incision is throbbing, and I'd rate the pain as an 8 out of 10." O: Grimacing, guarding lower abdomen, splinting incision when coughing. Heart rate 112 bpm, BP 142/90 mmHg. Diaphoretic. A: Acute pain related to surgical tissue trauma as evidenced by patient pain rating of 8/10, tachycardia, and guarding behavior. P: Administer prescribed IV analgesic, reposition for comfort, and re-evaluate pain level in 30 minutes. I: Administered Morphine Sulfate 2 mg IV push as ordered. Repositioned patient to semi-Fowler's position with pillow splinting over incision. E: Patient reports pain decreased to a 3/10 after 30 minutes. Heart rate decreased to 84 bpm, BP stable at 122/76 mmHg. Patient is resting quietly.

B. Focus Charting (DAR) Template

Focus Charting organizes notes around a specific patient focus (a nursing diagnosis, symptom, sign, or event):

• D (Data): Subjective and objective assessment findings.
• A (Action): Nursing interventions, treatments, or protocols initiated.
• R (Response): Evaluation of the patient's reaction to the action.

DAR Clinical Example (Hyperthermia):

Focus: Hyperthermia D: Patient's skin is flushed and warm to touch. Temperature is 39.1°C (102.4°F) orally. Tachycardia present at 108 bpm. Patient reports feeling cold and shivering. A: Administered Paracetamol 500 mg IV infusion as ordered. Initiated warm tepid sponge bath. Encouraged increased oral fluid intake. R: One hour post-intervention, temperature decreased to 37.4°C (99.3°F). Shivering has resolved. Skin is cool and dry. Patient states, "I feel much better now."

C. SBAR Handoff / Reporting Template

SBAR is a structured communication model designed to share critical information, especially during handoffs or when reporting a deteriorating patient to a physician:

• S (Situation): Who you are, where you are calling from, and why you are calling.
• B (Background): Contextual patient details (admission diagnosis, medical history, clinical timeline).
• A (Assessment): Your clinical assessment of the current situation.
• R (Recommendation): What you think needs to happen or what you are requesting.

SBAR Clinical Example (Respiratory Distress):

S: "Dr. Santos, this is Nurse Javier from the Medical Ward. I am calling regarding Patient Roberto Cruz in Room 402B who is experiencing acute respiratory distress." B: "Mr. Cruz is a 68-year-old male admitted yesterday for community-acquired pneumonia. He has a history of COPD and was stable on 2L oxygen via nasal cannula." A: "Over the last 15 minutes, his respiratory rate has increased from 18 to 28 breaths per minute, his SpO2 has dropped from 96% to 88% on 2L, and I hear coarse crackles bilaterally. He is using accessory muscles to breathe and is increasingly anxious." R: "I recommend that we obtain an immediate arterial blood gas (ABG) panel and chest X-ray. I also suggest increasing his oxygen to a venturi mask at 40% or initiating nebulizer therapy. Would you like me to order these now, or will you come to evaluate him?"

4. Legal Aspects of Documentation: Philippine Data Privacy Act of 2012 (RA 10173)

In the modern clinical environment, electronic health records (EHR) and computerized documentation require strict adherence to patient confidentiality regulations. In the Philippines, the primary legal framework governing patient data security is the Data Privacy Act of 2012 (Republic Act No. 10173).

A. Core Applications of RA 10173 to Nursing

• Definition of Sensitive Personal Information: Medical records, physical and mental health history, treatments, diagnostic results, and medication profiles are classified as sensitive personal information. They enjoy the highest level of legal protection under the law.
• The Principle of Confidentiality: Under both RA 10173 and the Code of Ethics for Filipino Nurses, nurses are obligated to maintain absolute confidentiality regarding all patient details. Access to patient records must follow the "need-to-know" principle. A nurse may only access the record of a patient for whom they are directly providing care.
• Data Security in EHR: Nurses must protect digital credentials. Sharing usernames and passwords, leaving computer terminals logged in, or transmitting patient files via unsecure personal messaging applications (e.g., Viber, Messenger) without institutional encryption is a direct violation of RA 10173.
• Handling Physical Records: Printed copies of EHR, handoff sheets, and lab results must not be left unattended in public spaces (e.g., nurses' stations, cafeterias, elevators). Disposal must be secure (e.g., shredding), never thrown into open trash bins.

B. Penalties for Violations

Violating the Data Privacy Act of 2012 carries severe criminal and professional consequences:

1. Fines and Imprisonment: Unauthorized processing, access due to negligence, or intentional breach of sensitive personal information can result in imprisonment ranging from 1 to 6 years and fines from PHP 500,000 to PHP 4,000,000.
2. Professional Discipline: Under RA 9173, the Professional Regulation Commission (PRC) Board of Nursing can suspend or revoke a nurse's professional license for unethical behavior and gross negligence in handling confidential records.