What is the most vital instruction for a patient being discharged on oxygen at 2 L/min via nasal cannula?

When a patient is discharged on oxygen therapy, especially via a nasal cannula, providing humidification is crucial. Oxygen supplied at a rate of 2 L/min can dry out the mucous membranes in the nasal passages and throat, potentially causing discomfort and complications such as nosebleeds or irritation. By attaching a humidification bottle to the oxygen canister, the patient receives moisture along with the oxygen, helping to keep the airways hydrated and comfortable. This is particularly important in patients who may have chronic respiratory issues or are at risk for airway dryness.

While other considerations like avoiding electric razors with oxygen and applying lubrication to dry areas are important for safety and comfort, the immediate impact on respiratory comfort when using oxygen therapy is best addressed through humidification. This helps to promote overall respiratory health and patient compliance with the oxygen therapy regimen.