For many people who have suffered through asthma and deal with it on a daily basis then they are used to using a pulse oximeter to help measure the level of oxygen in their blood. This can be an indicator of your lung function after exercise or strenuous activity. While this may not be a regular routine for many asthmatics it is something that is done when they get in trouble to help the health care provider understand what is going inside the body. These devices have become more portable and allow the person to take a more acitve role in helping to control their asthma and head off some of the potential problems that may occur.
