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P-E tubes and TEOAEs ???

Chf seat chfseat at aol.com
Wed Jul 26 22:14:51 EST 1995


Does anyone have any information on the effect, if any, of patent p-e
tubes on the measurement of transient evoked emissions ??? it would seem
that there may be an effect on the transfer function of the middle ear
system by mass-loading. also, it seems possible that depending on the
placement of the tube, there could be cancellation via acoustic energy
falling on the round window. What are the implications for testing
cochlear function in hard to test children with possible mixed hearing
losses.  Often, with negative middle ear pressure and/or effusion, the ABR
results are affected and emissions are obscured. With placement of tubes,
can be expect a valid test???



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