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Tuesday, 17 May 2011

Info Post
In the May 2011 edition of Archives of Otolaryngology-Head & Neck Surgery, a study was published on a randomized, placebo-controlled, double-blind prospective clinical trial (the best kind of research) to determine whether Nasacort AQ steroid nasal spray can resolve eustachian tube dysfunction as well as ear symptoms related to this disorder. Eustachian tube dysfunction at its mildest would cause symptoms of ear clogging much akin to the way the ears fill up when flying or driving up the mountain. At its worst, can lead to fluid buildup in the ear as well as chronic ear infections.

In the study population of 91 patients, they found that use of a steroid nasal spray did NOT help...

HOWEVER, after reading the paper, there is a major flaw to how the study was conducted which would significantly affect study outcomes. Mainly, how the nasal spray is used would strongly affect whether it will help or not.

According to the paper, patients were instructed to simply administer "2 metered sprays in each nostril once daily (55 µg per spray)..."

Nothing else.

Unfortunately, this type of administration is bound to fail, mainly because using a nasal spray in this manner is inadequate when addressing eustachian tube dysfunction.

First of all, the eustachian tube openings are at 90 degrees to the face, so the steroid nasal spray bottle needs to be directed towards the back of the head and not towards the eye. This needs to be specifically mentioned/demonstrated as it is not intuitive for most patients (and even doctors). The first picture is INCORRECT! The second picture is correct use. Read more here why directionality is important.


Second, a valsalva maneuver (blow air out the nose while keeping the nares pinched) must be performed after nasal spray administration in order to force the nasal spray medicine up into the eustachian tubes in order for the medication to affect the region of concern. Without a valsalva, the nasal spray medicine sits in the nasal cavity which would help with sinus problems, but not the ears which is the area of complaint. Valsalva needs to be done regularly throughout the day during treatment.

Why is this maneuver important? It's like pouring draino (steroid nasal spray) into a clogged toilet, but than not using a plunger (valsalva maneuver).

In any case, there are other studies that have found steroid nasal sprays to be helpful for eustachian tube dysfunction as listed under references.

Read more about eustachian tube dysfunction here.

References:
Management of Eustachian Tube Dysfunction With Nasal Steroid Spray. Arch Otolaryngol Head Neck Surg. 2011;137(5):449-455. doi:10.1001/archoto.2011.56

The role of topical nasal steroids in the treatment of children with otitis media with effusion and/or adenoid hypertrophy. Int J Pediatr Otorhinolaryngol. 2006;70(4):639-645.

Oral or topical nasal steroids for hearing loss associated with otitis media with effusion in children. Cochrane Database Syst Rev. 2006 Jul 19;3:CD001935.

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