Which practice is considered safe when using oxygen?

Maintaining humidification of the oxygen is a safe practice because it helps prevent the drying of the mucous membranes in the respiratory tract. When oxygen is delivered at high concentrations, it can lead to dryness and irritation, which can be uncomfortable and potentially harmful for patients. Humidification adds moisture to the oxygen, enhancing patient comfort and promoting better respiratory function. This is particularly important for patients who may be using supplemental oxygen for extended periods, ensuring their respiratory health is supported.

The other practices listed would not be considered safe. For example, "cracking" the tank can create a hazard by allowing oxygen to escape abruptly, which could lead to a fire or explosion risk. Using oxygen at a high flow rate of 8 to 12 liters per minute is generally not appropriate for chronic respiratory disorders, as many patients require lower flow rates to avoid complications. Lastly, using tap water in the humidifying bottle could introduce contaminants and is not recommended; distilled or sterile water is typically advised to ensure safety and avoid infections.