Oticon Alta

Perilymph Fistula

The short answer to your question is yes, the pathophysiological model defining a perilymphatic fistula (PLF) involves leakage of perilymph fluid from the inner ear (cochlea) into the middle ear space through the membrane of the round or oval windows. However, there are so many etiologies (causes) and forms of PLF that one must undergo a thorough case history and otoneurological testing to render any degree of specificity applicable to such condition.

PLFs are nearly always accompanied with hearing loss on the side experiencing the lesion. Generally, the only signficant contralateral effect (upon the opposing non-PLF ear) would be central in nature: Loss of summation (the overall increase in hearing sensitivity enjoyed with normal two-eared hearing), spatial ability (localization and temporal function) and the ability to understand speech in poor signal-to-noise environments (attending/squelching). The literature also refers to the ''inability to focus or concentrate'', which more than likely would be an artifact of the loss of the binaural functions just mentioned.

I take it from the nature of your question that you are currently under a physician's care, in which case I need to assure you that there are so many variables in the larger picture of PLF that it is best to rely upon him or her for more specific information relative to your case. I also suggest you to refer to Dr. Peter Roland's excellent paper that can be found at www.emedicine.com/ent/topic234.htm. The excellent bibliography at the end of that paper will provide you with even more information.

Share this article


Comment

Related Content
Preferred Professionals Near You
See More Preferred Professionals

Clinics above not close enough?
Search with your zipcode below.

Sign Up for Our eNewsletter
Our free eNewsletter is delivered to your inbox every two weeks - it’s the best way to stay informed about what’s new at Healthy Hearing!
Preferred Hearing Professionals Near You

Highline Hearing Professionals (formerly Highline Audiology)

457 SW 148th St Ste 101
Seattle, WA 98166

Click Here for Details

Northgate Hearing Services

10564 5th Ave NE Ste 203
Seattle, WA 98125

Click Here for Details

Puget Sound Hearing - Seattle

6902 Roosevelt Way NE
Seattle, WA 98115

Click Here for Details