Clinical Skills
Part 3 completes the respiratory examination with detailed analysis of added breath sounds, comprehensive pattern recognition across major pulmonary conditions, and essential clinical pearls. Master these final components to achieve diagnostic accuracy in respiratory medicine.
🎵 Added Breath Sounds: The Big Three
Pathological Respiratory Sounds
1. Wheeze/Rhonchi:
🎯 Definition & Timing
- Musical sound from vibrating airway walls
- Mainly expiratory (inspiratory in severe cases)
- Paradox: May disappear in severe obstruction
🎯 Wheeze Types
- Polyphonic: Multiple notes (asthma, COPD)
- Monophonic: Single note (local obstruction/tumor)
🎯 Stridor Alert
- Loud, harsh, mainly inspiratory
- Upper airway obstruction
- EMERGENCY SITUATION!
2. Crackles/Rales/Crepitations:
🎯 Mechanism
- Popping sounds from sudden small airway opening
🎯 Fine Crackles
- Rubbing strands of hair together between your fingers near your ear
- End-inspiratory timing
- Causes: Pulmonary edema, fibrosing alveolitis, early pneumonia
🎯 Coarse Crackles
- Bubbling, gurgling sound
- Secretions in airways
- Causes: Bronchiectasis, COPD, late pneumonia
🎯 Assessment Notes
- Document location: localized vs. diffuse
- Confirm not hair movement artifact
3. Pleural Rub:
🎯 Characteristics
- Coarse, creaking, leather-rubbing sound
- Both inspiratory AND expiratory phases
- Disappears with fluid separation (effusion)
🎯 Common Causes
- Acute infection
- Pulmonary infarction
- Pleural trauma
- Chronic inflammation
📊 Physical Signs by Condition
Pattern Recognition Guide
CONSOLIDATION (Lobar Pneumonia):
🎯 Key Findings
- Chest movement: Reduced on affected side
- Trachea: Central
- Percussion: Dull
- Breath sounds: Bronchial
- Vocal resonance: Increased
- Added sounds: Fine crackles
COLLAPSE Patterns:
🎯 Major Bronchus Obstruction
- Reduced expansion affected side
- Trachea → toward lesion
- Dull percussion
- Diminished/absent breath sounds
- Reduced vocal resonance
- No added sounds
🎯 Peripheral Bronchus Obstruction
- Reduced expansion affected side
- Trachea → toward lesion
- Dull percussion
- Bronchial breath sounds
- Increased vocal resonance
- Fine crackles
FIBROSIS Patterns:
🎯 Localized Fibrosis
- Reduced expansion affected side
- Trachea → toward lesion
- Dull percussion
- Bronchial breath sounds
- Increased vocal resonance
- Coarse crackles
🎯 Generalized Fibrosis (e.g., CFA)
- Bilateral reduced expansion
- Trachea central
- Normal percussion
- Vesicular breath sounds
- Increased vocal resonance
- Fine crackles
PLEURAL EFFUSION (>500mL):
🎯 Classic Findings
- Chest movement: Reduced on affected side
- Trachea: Away from lesion (if massive)
- Percussion: Stony dull (classic!)
- Breath sounds: Reduced/absent
- Vocal resonance: Reduced/absent
- Added sounds: None
LARGE PNEUMOTHORAX:
🎯 Key Findings
- Chest movement: Reduced on affected side
- Trachea: Away from lesion
- Percussion: Normal or hyper-resonant
- Breath sounds: Reduced/absent
- Vocal resonance: Reduced/absent
- Added sounds: None
ASTHMA:
🎯 Characteristic Pattern
- Chest movement: Bilateral (reduced if severe)
- Trachea: Central
- Percussion: Normal
- Breath sounds: Vesicular with prolonged expiration
- Vocal resonance: Normal
- Added sounds: Expiratory polyphonic wheeze
COPD (Chronic Obstructive Pulmonary Disease):
🎯 Typical Findings
- Chest movement: Bilateral reduced
- Trachea: Central
- Percussion: Normal (hyper-resonant if emphysema)
- Breath sounds: Vesicular with prolonged expiration
- Vocal resonance: Normal
- Added sounds: Expiratory wheeze + coarse crackles
🎯 Key Clinical Pearls
Essential Diagnostic Wisdom
Critical Reminders:
- Always compare sides during percussion and auscultation
- Haemoptysis in smoker ≥40 = lung cancer until proven otherwise
- Silent chest in severe asthma = CRITICAL - insufficient air movement
- Stony dull percussion = pleural effusion (classic finding)
- Trachea deviates TOWARD collapse/fibrosis, AWAY from effusion/pneumothorax
- Bronchial breathing = solid lung between airway and chest wall
- New persistent cough in smoker = cancer until proven otherwise
- Haemoptysis >200ml/24hr = high mortality - urgent treatment needed
- Orthopnea + PND (Paroxysmal Nocturnal Dyspnea: Sudden, severe shortness of breath that wakes a person from sleep) + pink frothy sputum = pulmonary edema
- Unilateral wheeze unchanging with cough = local obstruction (tumor, TB)
📋 Quick Examination Checklist
Systematic Assessment Protocol
10-Step Respiratory Examination:
- ☐ 1. Inspect sputum (amount, color, viscosity, odor)
- ☐ 2. General inspection (clubbing, cyanosis, pallor, tar stains, cachexia)
- ☐ 3. Respiratory rate and pattern
- ☐ 4. Chest shape and symmetry
- ☐ 5. Chest wall movement (palpation)
- ☐ 6. Tracheal position
- ☐ 7. Lymph nodes (cervical, supraclavicular, axillary)
- ☐ 8. Tactile fremitus
- ☐ 9. Percussion (compare sides!)
- ☐ 10. Auscultation (air entry, breath sounds, added sounds—compare sides!)
Clinical Synthesis: The respiratory examination is fundamentally about comparing sides and recognizing patterns. Each finding contributes to the complete clinical picture. History + examination = diagnosis in most respiratory cases.
⚕️ Final Clinical Wisdom
Mastering Respiratory Diagnosis
Key Principles:
- Pattern recognition is more valuable than isolated findings
- Comparative assessment between sides reveals pathology
- Historical context guides examination focus
- Serial examination tracks disease progression/response
- Integration of all findings creates diagnostic certainty
Bottom Line: Master these respiratory examination basics and you'll excel in clinical rotations and build a solid foundation for pulmonary medicine practice. The systematic approach combined with pattern recognition is the key to diagnostic success.