Oxygen Therapy for Heart Failure in the Ambulance
Introduction to Oxygen Administration
- The European Society of Cardiology recommends that oxygen therapy should be given based on clinical judgment unless oxygen saturation is <90%, in which case oxygen therapy should be routinely administered in patients with heart failure 1, 2
- Pulse oximetry monitoring must be instituted within minutes of patient contact in the ambulance to guide oxygen therapy decisions 1, 2
- The treatment objective is to maintain SpO2 >90% in patients with heart failure, according to the European Society of Cardiology guidelines 1, 2, 3
Guidelines for Oxygen Use
- The American Heart Association guidelines state that routine oxygen administration is not recommended in normoxemic patients (SpO2 ≥90-94%) with heart failure, as the effectiveness of oxygen in this setting is unknown 4, 5
- For patients with COPD comorbidity and heart failure, it is potentially harmful to administer supplementary oxygen to achieve saturation >92%, as this increases mortality risk, according to the American Heart Association guidelines 4, 5
Clinical Decision-Making
- The European Society of Cardiology recommends immediate pulse oximetry measurement to guide oxygen therapy decisions in patients with heart failure 1, 2
- If SpO2 <90%, oxygen should be started immediately in patients with heart failure, according to the European Society of Cardiology guidelines 3
- If SpO2 90-94%, clinical judgment should be used to decide on oxygen therapy in patients with heart failure, considering factors such as respiratory distress and work of breathing, as recommended by the European Society of Cardiology 1
- The target SpO2 should be >90% in patients with heart failure, but not higher unless clinically indicated, according to the European Society of Cardiology guidelines 3
- For known COPD patients with heart failure, the target SpO2 should be 88-92% to avoid hypercapnia, as recommended by the American Heart Association guidelines 4, 5
Concurrent Interventions
- Patients with heart failure should be positioned upright to improve respiratory status, as recommended by the American Heart Association guidelines 5
- Non-invasive ventilation (CPAP) should be considered if respiratory distress persists in patients with heart failure, according to the European Society of Cardiology guidelines 1
- Medical treatment, such as vasodilators or diuretics, should be initiated based on blood pressure in patients with heart failure, as recommended by the European Society of Cardiology guidelines 3