Obstructive lung disease. Continuing our
discussion. And here, we’ll be able to clearly
define chronic bronchitis, compare this with
emphysema and keep in mind, please, once again,
when we’ve looked at the overview of COPD.
Know the definition and as to how often times
chronic bronchitis is not only in your patients
with asthma, which is commonly found in the
US, as a diagnosis, but could also be seen
with emphysema as well.
Okay, so, let’s go now with chronic bronchitis.
Well, it’s a fact that literally, here,
up in the bronchi. So, we’re pretty proximal,
aren’t we, in terms of your respiratory
tree? And so therefore, if the bronchi, that
you see the cartoon here on your left, then
these are undergoing inflammation, but apart
from inflammation, you also have production
of mucus. Sounds kind of familiar to asthma
or very similar to asthma, does it not? So
therefore, you’ll have many of your patients
that may then present with three months of
productive cough consecutively over a two
year span. And so therefore, the symptoms
of asthma and chronic bronchitis
could be found together.
On your CT here, bilaterally, in what has
been circled, is the fact that the bronchi
is undergoing inflammation and it looks dilated
and you can clearly see that here on your
So, with all that said, let us now officially
get into the definition. It’s chronic productive
cough for 3 months for 2 successive years.
3 and 2, chronological order. In whom other
causes of chronic cough, example, bronchiectasis
has been excluded. So later on, at some point,
when we do discuss bronchiectasis, you’ll
see as to once again, how that more or less
it's dealing with the infection portion of your
bronchi. What does ectasis mean to you? Well,
we’ll talk about that being a process of
inflammation. It may precede or follow development
of airway limitation. So the more that you
end up creating those plugs
and mucus, which we will then clinically call
Reid index. And please understand that you
will have a hard time with breathing air out,
welcome to obstructive.