Nasal Cannulas Explained: How Oxygen Therapy Reaches You, Breath by Breath
Body:A nasal cannula is one of the simplest, and most widely used, medical devices in oxygen therapy. It consists of a lightweight tube with two small prongs that sit just inside the nostrils, delivering oxygen directly to the airways.
Its simplicity is exactly what makes it so effective.
Unlike masks, a nasal cannula allows users to speak, eat, and move freely while receiving oxygen. This is why it is commonly used with portable oxygen concentrators (POCs), both at home and during travel.
But behind this simplicity lies precision.
The flow of oxygen delivered through a nasal cannula is carefully controlled, typically measured in liters per minute (LPM). Even small variations in flow, fit, or positioning can affect how much oxygen actually reaches the lungs.
That’s why correct usage matters:
The prongs should curve downward into the nostrils
Tubing should sit comfortably over the ears without tension
Flow settings must match the prescription, not guesswork
For many users, the nasal cannula becomes part of daily life. Comfortable, unobtrusive, and reliable, when used correctly, it enables mobility rather than limiting it.
Because oxygen therapy isn’t just about having oxygen available.
It’s about making sure it reaches you, consistently and correctly, every single breath.
