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Re: Fwd: MFT
Hi Megha & List
As middle-ear in newborns is quite different from younger children and adults, patterns and classification system used in adults cannot be used for newborns. Several investigators have shown that 1000 Hz probe tone frequency using admittance tympanogram provides a consistent single peak tympanogram that render itself easily to quantification. We have proposed a classification for patterns as well as quantification for static admittance. Our norms are quite similar to Margolis et al. (2003) in JAAA and we have added pattern (similar to Jerger classification system- manuscript in submission). This classification system seems to nicely correlate to TEOAE results. You can also add reflexes using high frequency probe tone (preferably 1 kHz using BBN activator; however you machine should use appropriate technique to separate the two) to also test reflexes. Potentially, you can use both 1k Hz tympanogram and reflexes at 1 KHz as a compliment to and not a substitution to current scr
eening protocol. This may enable you to distinguish those may fail due to transient middle ear problem. However, still more data needs to be collected to see how feasible this combination may work. Hope this answer your question.
Navid Shahnaz, Ph.D
School of Audiology & Speech Sciences
Faculty of Medicine
5804 Fairview Ave.
Vancouver, B.C. V6t 1Z3
---------- Original Message ----------------------------------
From: megha jp <meghajp11@xxxxxxxxxxx>
Reply-To: megha jp <meghajp11@xxxxxxxxxxx>
Date: Sat, 23 Sep 2006 17:41:37 +0100
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