Post stapedectomy perilymph fistulas in the rocky mountain area: The importance of nystagmography and audiometry in diagnosis and early tympanotomy in prognosis

Hemenway, William G.; Hildyard, Victor H.; Black, F. Owen

doi:10.1288/00005537-196810000-00004

Cited by 29 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nine (9) round window (RW) and nine (9) oval window (OW) fistulas were observed, and in two patients both windows showed active fistulas. In seven (7) patients, clear fluid consistent with a PLF was observed, but no discrete defect was identified at the time of surgery (Table 3).…”

Section: Clinical Studymentioning

confidence: 99%

ECoG Results in Perilymphatic Fistula: Clinical and Experimental Studies

Arenberg¹,

Ackley

Ferraro

et al. 1988

Otolaryngol.--head neck surg.

View full text Add to dashboard Cite

Patients with perilymphatic fistula have been described as having symptoms similar to Meniere's disease and endolymphatic hydrops. Direct clinical or experimental evidence linking the two inner ear disorders has been lacking. An enhancement of the summating potential observed with electrocochleography suggests a diagnosis of ELH in both of these inner ear disorders. In this study, ECoG results of 27 patients with surgically confirmed PLF are reported. Fourteen patients with surgically confirmed spontaneous PLF had abnormal ECoG. Six of these 14 patients had normal hearing. The ECoG changes in patients with Meniere's disease and those with surgically confirmed PLF are identical, indicating the underlying pathologic change in both is hydrops. But there is no specific diagnostic abnormality on ECoG that differentiates these two inner ear disorders. Also, an experimental model of PLF was developed and studied in guinea pigs. "Inactive" PLF is defined as "an opening was made into the cochlea, but if no perilymph moved out through the fistula, it was defined as inactive" An "active" PLF occurs when perilymph actually moves from the inner ear out to the middle ear. ECoGs were recorded before and after creation of an "active" PLF. ECoG abnormalities were seen in "active" PLF and correlated with histologic data demonstrating ELH. An abnormally enhanced summating potential was demonstrated after active removal of perilymph through the experimentally created fistula. Cochlear duct histology showed hydropic distention of Reissner's membrane in the experimental ears and no changes in the membranous labyrinths of the unoperated, control ears.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

Section: Clinical Studymentioning

confidence: 99%

ECoG Results in Perilymphatic Fistula: Clinical and Experimental Studies

Arenberg¹,

Ackley

Ferraro

et al. 1988

Otolaryngol.--head neck surg.

View full text Add to dashboard Cite

show abstract

“…Other abnormal connections have been identified but are much less commonly reported [1,2]. The causes of a PLF are multiple, including stapedectomy [3,4], head or ear trauma [5][6][7], diving [8], flying [9], surgery for chronic otitis media [10], Valsalva-like exertion [7,11], general anesthesia [7,12], acoustic trauma [13] and congenital PLF [7,[14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Perilymphatic Fistula: A Washington, D.C., Experience

Fitzgerald

Getson

Brasseux

1998

Otorhinolaryngol Nova

View full text Add to dashboard Cite

One hundred ninety-seven patients who underwent surgical repair for a presumed unilateral perilymphatic fistula (PLF) were reviewed. Of those patients, 87% with vestibular symptoms reported complete or near-complete relief of their symptoms. Forty percent of the patients with sudden hearing loss had an improvement in their hearing levels. An analysis of several diagnostic tests revealed their sensitivity and specificity ratings. A review of the patients’ operative records showed a marked disparity between the visual identification of an actual fluid leak during surgery and their postoperative outcome. This review supports the premise that at the present time, the patient’s surgical outcome is the best way of documenting a successfully repaired PLF.

show abstract