| Wheezing, pulsus paradoxus, accessory muscle use | Acute asthma, COPD exacerbation |
| Wheezing, clubbing, barrel chest, decreased breath sounds | COPD exacerbation |
| Fever, crackles, increased fremitus | Pneumonia |
| Edema, neck vein distension, S3 or S4 hepatojugular reflux, murmurs, rales, hypertension, wheezing | Congestive heart failure, pulmonary edema |
| Wheezing, friction rub, lower extremity swelling | Pulmonary embolism |
| Absent breath sounds, hyperresonance | Pneumothorax |
| Inspiratory stridor, rhonchi, retractions | Croup |
| Stridor, drooling, fever | Epiglottitis |
| Stridor, wheezing, persistent pneumonia | Foreign body aspiration |
| Wheezing, flaring, intercostal retractions, apnea | Bronchiolitis |
| Sighing | Hyperventilation |