Why does a person with severe emphysema sometimes use portable oxygen tank?

Emphysema is a chronic lung disease that causes shortness of breath, coughing, and wheezing. It is caused by damage to the air sacs in the lungs, which makes it difficult to breathe.

Oxygen therapy is a treatment that provides extra oxygen to the lungs. It can help to improve breathing and reduce shortness of breath. Portable oxygen tanks are used by people with emphysema who need extra oxygen when they are away from home.

There are two main types of portable oxygen tanks:

* Continuous flow oxygen tanks provide a continuous stream of oxygen.

* Pulse-dose oxygen tanks provide oxygen in short bursts when the person breathes in.

The type of portable oxygen tank that a person with emphysema uses will depend on their individual needs.

Portable oxygen tanks can be used in a variety of settings, including:

* At home

* In the car

* On airplanes

* During exercise

Oxygen therapy can help to improve the quality of life for people with emphysema. It can help them to breathe more easily, reduce shortness of breath, and increase their activity levels.