How can oxygen be delivered to patients?

Oxygen can be delivered to patients through various devices and methods, and the option that highlights the most common and effective means of oxygen delivery is indeed through nasal cannulas, masks, concentrators, or tanks.

Nasal cannulas are lightweight tubes that fit comfortably in the patient's nostrils, allowing for the direct flow of oxygen, which is particularly useful for patients who require a continuous flow of oxygen but can still eat, speak, and move relatively freely. Masks are often used for patients who need higher concentrations of oxygen and can cover both the nose and mouth, ensuring that a larger volume of oxygen is delivered.

Oxygen concentrators are devices that extract oxygen from ambient air, providing a steady supply to the patient. Oxygen tanks store compressed oxygen and are portable, making them valuable in both hospital and home settings.

The other options do not provide viable means for delivering oxygen. Nebulizers are primarily used for aerosolized medication rather than for oxygen delivery, and oral tablets or injections are not suitable for oxygen therapy. Additionally, while diffusion through the skin could theoretically allow some gases to move through, it is not a practical or effective method for delivering oxygen to patients. Therefore, the correct answer reflects the standard and widely accepted means of oxygen delivery in