. In spring and summer pollen particles
are released into the air we breathe, causing seasonal rhinitis, commonly referred to as hay
fever (nasal/sinus allergies). People who smoke cigarettes are those most likely to develop chronic bronchitis. I'm not sure oxygen is coming out of my nasal cannula, how can I test it? Put the tips of your cannula in a glass of water; be sure your concentrator is on. What does this
mean and what should I do? Your machine has a safety device on it called an Oxygen Percentage Indicator (OPI) and the
yellow/amber light indicates that the oxygen.
In spring.
