Corner left
Corner right
Showing posts with label valsalva. Show all posts
Showing posts with label valsalva. Show all posts

July 24, 2012

How Can Nasal Obstruction CAUSE Clogged Ears?

It is not uncommon that patients who suffer from a clogged nose also develop clogged ears.

Why??? There are 2 major and 1 minor reasons.

First a little anatomy lesson.

In the back of the nose, there is an opening that leads into a tunnel (eustachian tube) that goes up into the ear. When the ears get clogged, a person can get the pressure out by "popping the ears." This can be accomplished by yawn, swallow, or trying to blow out the nose that is pinched shut. When the ear pops, what happens is that the tunnel opens up allowing pressure to come out the ear. Watch video:



Mucosal Swelling

Now when the patient's nose gets obstructed, it may mean the nasal lining has become swollen making it difficult to breath. It also means the tunnel that goes up into the ear may be swollen shut as well. As such, it may become difficult if not impossible to pop the ears. This is known as eustachian tube dysfunction.

Negative Pressure Inside the Nose

However, there is a more active process that may lead to ear clogging beyond just mucosal swelling of the eustachian tube.

When the nose is obstructed, every time the patient tries to breath in thru the nose, negative pressure is built up in the back of the nose where the eustachian tube opening is located. As such, this negative pressure inside the nose can get transmitted up into the ear resulting in negative pressure to slowly build up in the ear as well which can ultimately cause a clogged ear sensation. This is just like sucking on a straw to draw fluid out of a cup, though in this case, the straw is analogous to the eustachian tube, the fluid is air, cup is the ear, and the mouth is the nose.

Bernoulli's Principle

In fluid dynamics, Bernoulli's principle states that for an inviscid flow, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure.

To use an example, if you are driving a car with the window down, the fast-moving air outside the car creates a negative pressure inside the car causing things to not just blow around, but does cause some suction effect to things within the car (paper inside the car potentially getting "sucked" to the outside).

When the nose becomes clogged, airflow increases in the back of the nose (think garden hose where you have the same amount of water flow, but by changing the nozzle diameter, flow can be increased by making diameter smaller or decreased by making diameter larger). Due to Bernoulli's principle, negative pressure builds up inside the ear due to this increased nasal airflow.

This negative pressure can be transmitted into the ear causing it to become clogged.

So there you have it... 3 reasons why a clogged nose can lead to clogged ears!

That also means that often, if you just treat the clogged nose... the clogged ears will get better as well!

April 23, 2012

Video of Eustachian Tube Popping Open with Valsalva

Ever wonder what the eustachian tube looks like when the ear pops open with valsalva maneuver? Valsalva is accomplished by trying to blow air out a nose that is pinched closed. The eustachian tube is a tunnel that goes from the back of the nose to the ear.

Well, here you go! Video provided courtesy of Dr. Vijay Anand.


Watch this video to see where this eustachian tube is exactly located.

Read more about ear popping and when one is NOT able to pop the ears, a condition called eustachian tube dysfunction!

April 18, 2012

Video on Ear Clogging and What Happens When They Pop Open (or Don't)

A new video has been created describing anatomically how a person pops the ear open when it feels clogged or under pressure. Also explained is what happens anatomically when the clogged ear is very difficult if not impossible to pop open; a condition called eustachian tube dysfunction.

Check the video out here!



lump in throat clogged ears
Related Posts Plugin
 

Other Topics on ENT Blog

 

Advertise Here!

Advertise Here!

Advertise Here!

 
Corner left
Corner right