It is normal to have impaired mucociliary clearance after any nasal/sinus surgery. Despite cleansing and antibiotics, infections may occur. However, in the patients with unusual distress, complaints of insufficient air, being unable to breathe – consider ENS – Empty Nose Syndrome.
Your patient’s history is that she had some difficulty breathing at night. The doctor diagnosed a deviated septum and recommended correcting it. She is seeing you now because 3 months after surgery, she isn’t getting enough air! She says she can’t breathe! You check her oxygen level and it is 99%. You look into her nose and the septum is perfectly straight! In addition, there is more than enough room for air passage. Why is this patient complaining of not getting enough air? Does she have Empty Nose Syndrome (ENS) [1]?
Eugene Kern, M.D. had such a patient. When he took a CT of the sinuses, he saw that the inferior nasal turbinates had been removed. Even the middle turbinates were smaller. His student remarked that the nose looked empty – hence the name Empty Nose Syndrome or ENS [2].
The inferior turbinates have major functions that include warming the air on its way to the lungs; supplying an outer layer of mucus that traps bacteria, dust, pollens and toxins. It also supplies the inner layer with thin mucus that allows for synchronous beating of millions of cilia that act as oars, to move the mucus out of the nose to the back of the throat where it is swallowed [3,4].
The turbinates also serve a neural function. They direct the flow of air so that it reaches sensors that tells the body that the air is flowing in correctly. With the turbinates absent, there is a significant change in air pressure reaching the sensors. A useful analogy is water from a hose with a nozzle of correct size opening. The stream travels four feet. Now, open the nozzle wide, and the water dips at your feet; it no longer reaches the roses. In a similar manner, when the nose is widely open, air currents no longer reach the sensors to tell the respiratory system that air is coming in. In addition, the pressure of the air reaching the lower respiratory system is altered, contributing to ENS symptoms [5].
Recent studies have shown connections to the limbic system to explain the patient’s distress. In addition, there are fibers from the Cranial Fifth Nerve that require activation, and therefore the absence of that pressure is distressing [5-7].
A useful analogy is anesthesia of the second finger. In trying to type, you can use that finger, but you no longer feel the keys. It is now difficult to type [8].
In ENS, there may be recurrent infection due to absence of mucociliary clearance. Without the blanket to trap bacteria and the cilia to move them, bacteria remain in place and multiply. Patients may feel symptoms due to absence of warm moist air. There may be hyposmia due to dryness. Crusting and infection are common. There are associated chest complaints because of the change in air pressure flow [9].
ENS is not unlike atrophic rhinitis, but without the surgical history. ENS must be differentiated from the frequent sinus infections after any nasal/sinus surgery that accompany reduced mucociliary clearance. However here, the turbinates are usually swollen [10,11].
Logically, it makes sense: if the turbinates are enlarged, blocking the airway, by removing them you create a wider space for air flow. Unfortunately, the physiology of nasal function, is seriously altered, resulting in a distressed patient [12].
Turbinectomy can occur with cryosurgery, electrical cautery, laser and radiofrequency, and can result in excessive destruction of the turbinate. The result is excessive crusting and frequent infection.
Lemogne has recommended treating Empty Nose Syndrome as a somatic disorder, including cognitive therapy and by venlafaxine [13].
There have been many procedures used for reconstruction of the turbinates, and repairing the air flow recommended. Steven Houser of Cleveland has pioneered these procedures, including alloderm implant [14,15].
One that is frequently used in injecting Hyaluronic acid gel into the turbinate area, as well as the septum. This may give months of temporary relief, but must be repeated about every six months. A further action of Hyaluronic acid is that you can inject this into the turbinate and septum to reestablish proper air current flow. This makes an excellent guide for possible surgical correction [16].
It is usual after any nasal surgical procedure to take time for the nose to return to normal mucociliary function. One study indicated three months. With the cilia impaired post- surgery, the normal bacterial defenses are reduced. Some doctors routinely give systemic antibiotics to prevent infection. We have found that using pulsed irrigation to restore cilia function post-op works well. With cilia function restored earlier, there is less infection and symptoms. Restoring mucociliary function may include saline spray, green tea, humming and overall increase of fluids with lemon/lime [17].
Because this condition is so variable and difficult to evaluate, there are many variations of treatment. The following are those I have found helpful.
Received date: November 24, 2017
Accepted date: December 20, 2017
Published date: June 06, 2018
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© 2018 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY).
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