Guide — Fundamentals
Respiratory Patient Assessment
A systematic bedside respiratory assessment: history and the cardinal symptoms, then inspection, palpation, percussion, and auscultation, plus the vital signs and work-of-breathing signs that flag a deteriorating patient. The aim is to catch trends early and localize the problem — not to react to a single number on the monitor.
10 min read · Fundamentals
Written by Apex Respiratory Editorial Team
Educational use only. This material supports respiratory therapy education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional protocols, or physician orders. Always follow facility policies and current provider orders, and verify calculations independently before clinical use.
Overview
A structured respiratory assessment combines the history (the symptoms) with the four-part physical exam — inspection, palpation, percussion, auscultation (IPPA) — plus vital signs and oxygenation. The goal is to detect trends early and localize the problem rather than react to a single number. Run the same sequence every time and the bedside picture assembles itself.
Key Concepts
History & cardinal symptoms. Quantify dyspnea (exertional, orthopnea, paroxysmal nocturnal dyspnea), characterize cough (productive vs dry) and sputum (color, volume, and any change), and ask about hemoptysis, chest pain (pleuritic vs not), and wheeze. Add smoking, occupational, and exposure history.
Then move through the physical exam in fixed IPPA order. The table below pairs each step with what you are looking for and the highest-yield findings.
| Step | Looking For | Key Findings |
|---|---|---|
| Inspection | Rate, pattern, symmetry, effort | RR (normal adult 12–20), chest movement symmetry, accessory muscle use, nasal flaring, retractions, pursed-lip breathing, tripod position, barrel chest (COPD), cyanosis, clubbing, level of consciousness, full sentences vs single words |
| Palpation | Trachea, expansion, fremitus | Tracheal position (midline vs deviated), chest expansion symmetry, tactile fremitus (↑ over consolidation, ↓ over effusion / pneumothorax / hyperinflation), subcutaneous emphysema (crepitus) |
| Percussion | Underlying density | Resonant (normal), hyperresonant (air trapping, pneumothorax, emphysema), dull (consolidation, effusion, atelectasis), flat (large effusion) |
| Auscultation | Normal & adventitious sounds | Vesicular, bronchovesicular, bronchial; crackles (fine = interstitial/edema, coarse = secretions), wheezes (bronchospasm), rhonchi (secretions), stridor (upper-airway obstruction — emergency), pleural friction rub |
See the Breath Sounds guide for a deeper breakdown of normal and adventitious lung sounds.
Assessment & Findings
Anchor your read to a normal reference, then watch for the signs of deterioration. Any single red-flag finding in the right-hand column means escalate — do not wait for the numbers to agree.
| Sign | Normal | Red Flag |
|---|---|---|
| Respiratory rate | 12–20/min | Over 30 or under 8/min |
| Heart rate | 60–100/min | Rising with worsening effort |
| SpO₂ | ≥ 95% (88–92% in chronic hypercapnia) | Falling despite oxygen |
| Work of breathing | Quiet, unlabored | Accessory muscle use, paradoxical or abdominal breathing |
| Speech / mentation | Full sentences, alert | Single-word dyspnea, declining level of consciousness |
| Chest exam | Audible, symmetric sounds | Silent chest in asthma, cyanosis |
Deterioration and impending failure announce themselves through a cluster of these findings: a respiratory rate over 30 or under 8, SpO₂ falling despite oxygen, accessory muscle use, paradoxical or abdominal breathing, single-word dyspnea, a declining level of consciousness, a silent chest in asthma, or cyanosis.
RT Priorities & Interventions
- Trend, don’t snapshot. Serial assessments catch deterioration that a single reading hides — the direction of change matters more than any one value.
- Combine findings into a pattern. Dull percussion + decreased fremitus + absent breath sounds suggests a pleural effusion; hyperresonance + absent sounds + tracheal deviation away suggests a tension pneumothorax (an emergency).
- Match the intervention to the mechanism. Bronchodilator for wheeze, suction for rhonchi or retained secretions, recruitment for atelectasis.
- Communicate and document. Report findings clearly using SBAR and document the trend so the next clinician inherits the trajectory, not just a snapshot.
Common Pitfalls
- Relying on SpO₂ alone — it is a late sign and says nothing about ventilation or work of breathing.
- Skipping inspection (work of breathing and pattern) in favor of the monitor.
- Not comparing left with right — asymmetry is the highest-yield finding on the chest exam.
- Reading a silent chest in severe asthma as reassuring when it signals impending failure.
Board Exam Pearls
- IPPA order: Inspect, Palpate, Percuss, Auscultate.
- Tracheal deviation: away from a tension pneumothorax or a large effusion; toward atelectasis or a pneumonectomy.
- Increased tactile fremitus + dull percussion + bronchial breath sounds = consolidation; decreased fremitus + dull percussion + absent sounds = pleural effusion.
- Accessory muscle use and paradoxical breathing indicate high work of breathing and fatigue.
- Normal adult respiratory rate is 12–20/min.
FAQ
What order should I assess a patient in?
History first, then the physical exam in IPPA order — inspection, palpation, percussion, auscultation — followed by vital signs and oxygenation. A consistent sequence keeps you from skipping steps under pressure.
Which way does the trachea deviate in a tension pneumothorax?
Away from the affected side — accumulating air pushes the mediastinum toward the opposite lung. Atelectasis and pneumonectomy instead pull the trachea toward the affected side.
Why is SpO₂ not enough on its own?
Pulse oximetry is a late, oxygenation-only signal — it says nothing about ventilation (CO₂), work of breathing, or the direction of the trend. A tiring patient can hold a normal SpO₂ until they suddenly cannot, so inspect the work of breathing and trend the whole picture.
What makes a "silent chest" in asthma so ominous?
It means airflow has dropped so low that the patient can no longer generate audible wheezing — a sign of severe obstruction and impending respiratory failure, not improvement.
Put it to work
Confirm your bedside read against the gas — enter the values and let the interpreter check the acid-base and oxygenation picture.
Open the ABG Interpreter →Related Resources
Sources
- Kacmarek RM, Stoller JK, Heuer AJ. Egan's Fundamentals of Respiratory Care. 12th ed. Elsevier; 2021. Bedside assessment of the patient chapter.
- National Board for Respiratory Care. Therapist Multiple-Choice Examination (TMC) Detailed Content Outline. Patient Data Evaluation and Recommendations section.