Why we should pass oxygen through water before giving it to the patient?

There are a few reasons why we should pass oxygen through water before giving it to a patient.

1. To humidify the oxygen. Dry oxygen can irritate the airways, especially if it is being delivered at a high flow rate. Humidifying the oxygen helps to keep the airways moist and comfortable, and it can also help to prevent complications such as nosebleeds and bronchitis.

2. To remove impurities. Oxygen that is not properly filtered can contain impurities such as dust, bacteria, and viruses. Passing oxygen through water helps to remove these impurities and ensure that the patient is receiving clean, safe oxygen.

3. To warm the oxygen. Oxygen that is delivered at room temperature can be uncomfortable for patients, especially if they are already feeling cold. Passing oxygen through water helps to warm it to a more comfortable temperature, which can improve patient comfort and compliance.

In general, it is always a good idea to pass oxygen through water before giving it to a patient, unless there is a specific reason why this cannot be done. By humidifying, filtering, and warming the oxygen, we can help to ensure that the patient is receiving the best possible care.