Summating potential/action potential ratio in perilymph fistula

W. L. Meyerhoff, Mary W Yellin

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

A prospective study of electrocochleography in patients with clinically suspected perilymph fistula was undertaken to determine its predictive value in that disorder. One hundred forty-four patients suspected of having perilymph fistula had electrocochleography performed - 34 of these (39 ears) had exploratory tympanotomy. Of the 19 ears with normal preoperative summating potential/action potential (SP/AP) ratio, ten had perilymph fistula identified at the time of surgery. Of the 20 ears with abnormal SP/AP ratio, 16 had perilymph fistula confirmed at exploration, 18 had resolution of symptoms after oval window and round membrane grafting, and only one ear had postoperative persistence of the abnormal SP/AP ratio. This study suggests that an abnormal SP/AP ratio is not only predictive of endolymphatic hydrops, but also of perilymph fistula (both problems of inner ear fluid imbalance). This study also suggests that, while abnormal SP/AP ratio is fairly specific for inner ear fluid imbalance, it is not sensitive.

Original languageEnglish (US)
Pages (from-to)678-682
Number of pages5
JournalOtolaryngology - Head and Neck Surgery
Volume102
Issue number6
StatePublished - 1990
Externally publishedYes

Fingerprint

Perilymph
Action Potentials
Fistula
Ear
Evoked Response Audiometry
Inner Ear
Endolymphatic Hydrops
Prospective Studies
Membranes

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Summating potential/action potential ratio in perilymph fistula. / Meyerhoff, W. L.; Yellin, Mary W.

In: Otolaryngology - Head and Neck Surgery, Vol. 102, No. 6, 1990, p. 678-682.

Research output: Contribution to journalArticle

@article{848c9062b939421e9790a331d0290030,
title = "Summating potential/action potential ratio in perilymph fistula",
abstract = "A prospective study of electrocochleography in patients with clinically suspected perilymph fistula was undertaken to determine its predictive value in that disorder. One hundred forty-four patients suspected of having perilymph fistula had electrocochleography performed - 34 of these (39 ears) had exploratory tympanotomy. Of the 19 ears with normal preoperative summating potential/action potential (SP/AP) ratio, ten had perilymph fistula identified at the time of surgery. Of the 20 ears with abnormal SP/AP ratio, 16 had perilymph fistula confirmed at exploration, 18 had resolution of symptoms after oval window and round membrane grafting, and only one ear had postoperative persistence of the abnormal SP/AP ratio. This study suggests that an abnormal SP/AP ratio is not only predictive of endolymphatic hydrops, but also of perilymph fistula (both problems of inner ear fluid imbalance). This study also suggests that, while abnormal SP/AP ratio is fairly specific for inner ear fluid imbalance, it is not sensitive.",
author = "Meyerhoff, {W. L.} and Yellin, {Mary W}",
year = "1990",
language = "English (US)",
volume = "102",
pages = "678--682",
journal = "Otolaryngology - Head and Neck Surgery",
issn = "0194-5998",
publisher = "Mosby Inc.",
number = "6",

}

TY - JOUR

T1 - Summating potential/action potential ratio in perilymph fistula

AU - Meyerhoff, W. L.

AU - Yellin, Mary W

PY - 1990

Y1 - 1990

N2 - A prospective study of electrocochleography in patients with clinically suspected perilymph fistula was undertaken to determine its predictive value in that disorder. One hundred forty-four patients suspected of having perilymph fistula had electrocochleography performed - 34 of these (39 ears) had exploratory tympanotomy. Of the 19 ears with normal preoperative summating potential/action potential (SP/AP) ratio, ten had perilymph fistula identified at the time of surgery. Of the 20 ears with abnormal SP/AP ratio, 16 had perilymph fistula confirmed at exploration, 18 had resolution of symptoms after oval window and round membrane grafting, and only one ear had postoperative persistence of the abnormal SP/AP ratio. This study suggests that an abnormal SP/AP ratio is not only predictive of endolymphatic hydrops, but also of perilymph fistula (both problems of inner ear fluid imbalance). This study also suggests that, while abnormal SP/AP ratio is fairly specific for inner ear fluid imbalance, it is not sensitive.

AB - A prospective study of electrocochleography in patients with clinically suspected perilymph fistula was undertaken to determine its predictive value in that disorder. One hundred forty-four patients suspected of having perilymph fistula had electrocochleography performed - 34 of these (39 ears) had exploratory tympanotomy. Of the 19 ears with normal preoperative summating potential/action potential (SP/AP) ratio, ten had perilymph fistula identified at the time of surgery. Of the 20 ears with abnormal SP/AP ratio, 16 had perilymph fistula confirmed at exploration, 18 had resolution of symptoms after oval window and round membrane grafting, and only one ear had postoperative persistence of the abnormal SP/AP ratio. This study suggests that an abnormal SP/AP ratio is not only predictive of endolymphatic hydrops, but also of perilymph fistula (both problems of inner ear fluid imbalance). This study also suggests that, while abnormal SP/AP ratio is fairly specific for inner ear fluid imbalance, it is not sensitive.

UR - http://www.scopus.com/inward/record.url?scp=0025328559&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025328559&partnerID=8YFLogxK

M3 - Article

C2 - 2115654

AN - SCOPUS:0025328559

VL - 102

SP - 678

EP - 682

JO - Otolaryngology - Head and Neck Surgery

JF - Otolaryngology - Head and Neck Surgery

SN - 0194-5998

IS - 6

ER -