Evaluation and Management of Shortness of Breath

Initial Assessment and Oxygenation

Perform an "ABC" assessment (Airway, Breathing, Circulation) and measure vital signs, including pulse rate, respiratory rate, blood pressure, temperature, and pulse oximetry (SpO2), as recommended by the British Thoracic Society 1
Target SpO2 88-92% for patients with known COPD or risk of hypercapnic respiratory failure, and monitor closely for CO2 retention, as recommended by the British Thoracic Society 1
Consider arterial blood gas to assess for hypoxemia, hypercapnia, and acid-base status, as recommended by the British Thoracic Society 1
Provide supplemental oxygen if SpO2 is below 94% (or 88-92% in patients with known COPD or risk for hypercapnic respiratory failure), and avoid delaying oxygen therapy while waiting for diagnostic results in severely hypoxemic patients, according to the American Heart Association 2
For SpO2 <94%, start with nasal cannula at 2-6 L/min or simple face mask at 5-10 L/min, and for SpO2 <85%, use reservoir mask at 15 L/min, as recommended by the British Thoracic Society 1

Use chest X-ray to evaluate for pneumonia, pulmonary edema, pneumothorax, as recommended by the American College of Emergency Physicians 3
Consider CT pulmonary angiogram if pulmonary embolism is suspected and D-dimer is positive or there is high clinical suspicion, as recommended by the American College of Emergency Physicians 3
Use spirometry if obstructive lung disease is suspected and the patient is stable, as recommended by the British Thoracic Society 1
Consider sputum culture if an infectious etiology is suspected, as recommended by the American College of Chest Physicians 4, 1, 5
Use bedside ultrasound/echocardiography for cardiac function and effusion evaluation, as recommended by the British Thoracic Society 1

Position the patient upright to optimize respiratory mechanics, as recommended by the American Heart Association 2
Use bronchodilators such as short-acting beta-agonists (albuterol) via nebulizer or MDI with spacer for bronchospasm, as recommended by the American College of Chest Physicians 4, 2
Provide oxygen supplementation and consider CPAP/NIV for pulmonary edema, as recommended by the British Thoracic Society 1
Consider anticoagulation if there is high suspicion of pulmonary embolism and no contraindications, as recommended by the American College of Emergency Physicians 3
Consider thrombolysis for massive PE with hemodynamic instability, as recommended by the American Heart Association 1, 6

Failing to recognize hypercapnic respiratory failure in COPD patients given high-flow oxygen is a common pitfall, according to the British Thoracic Society 1
Relying solely on pulse oximetry without clinical correlation is a common pitfall, according to the British Thoracic Society 1
Not assessing for underlying conditions, such as asthma, COPD, bronchitis, emphysema, and lung cancer, can lead to delayed diagnosis and treatment, as recommended by the European Respiratory Journal 7
Not documenting the patient's smoking history, occupational and environmental exposures, and onset, duration, severity, associated symptoms, aggravating/relieving factors, and relevant medical history can lead to inaccurate diagnosis and management, as recommended by the American College of Emergency Physicians and the American Heart Association 5, 4

Assess the severity of dyspnea using a scale of 1-10, and evaluate its impact on daily activities, such as using the mMRC dyspnea scale, as recommended by the European Respiratory Society 7
Document the patient's ability to speak in complete sentences and their exercise tolerance, such as blocks walked or stairs climbed, to assess the severity of dyspnea and its impact on daily life, as recommended by the European Respiratory Society 7
Assess associated symptoms, such as chest pain, cough, wheezing or stridor, hemoptysis, fever or chills, edema, and palpitations, to suggest specific diagnoses, as recommended by the American College of Chest Physicians 4
Document the patient's response to previous treatments or interventions, including medications, inhalers, and oxygen, and assess the impact of shortness of breath on daily activities, sleep disturbances, and work/school performance, as recommended by the National Institutes of Health and the American Academy of Sleep Medicine 5, 8

Consider ICU admission for respiratory failure requiring mechanical ventilation, hemodynamic instability, or requiring continuous monitoring, as recommended by the British Thoracic Society 1
Consider hospital admission for significant hypoxemia, underlying severe disease, or failed outpatient therapy, as recommended by the British Thoracic Society 1
Consider observation for mild symptoms with improvement after initial treatment but requiring further monitoring, and consider discharge for complete resolution of symptoms, normal vital signs, and clear follow-up plan, as recommended by the British Thoracic Society 1