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Impact of prognostic factors on recovery from sudden hearing loss

Published online by Cambridge University Press:  23 January 2007

A Ceylan ,
F Çelenk ,
Y K Kemaloğlu ,
Y A Bayazıt ,
N Göksu  and
S Özbi˙len
A Ceylan*
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
F Çelenk
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
Y K Kemaloğlu
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
Y A Bayazıt
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
N Göksu
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
S Özbi˙len
Affiliation:
Department of Otolaryngology, Gazi University School of Medicine, Ankara, Turkey
*
Address for correspondence: Fatih Çelenk, Department of Otolaryngology, Gazi University School of Medicine, Besevler, Cankaya, 06500, Ankara, Turkey. Fax: +90 312 215 0815 E-mail: fcelenk@gazi.edu.tr
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Abstract

Objective:

To define the impact of patient-related and audiovestibular parameters on the prognosis of sudden hearing loss.

Methods:

Eighty-three patients were included in this retrospective study. All were treated medically. We recorded the patients' demographic parameters, systemic diseases, time elapsed between onset of sudden hearing loss and initiation of treatment, tinnitus, vestibular symptoms, type of initial audiogram, pure tone averages and speech discrimination scores. For all patients, audiological measurements were performed on initial admission and at the completion of treatment on the 10th day.

Results:

There was no correlation between the hearing gain and recovery rate scores and patients' gender or age (p>0.05). However, a correlation was found between gender and relative hearing gain. Vertigo was not correlated with hearing gain and recovery rate scores (p<0.05). However, relative hearing gain correlated negatively with the presence of vertigo (−r=0.05, 81 degrees of freedom, p=0.043). Patients with <40 dB hearing loss on admission showed a better relative hearing gain (r=0.55, 81 degrees of freedom, p=0.03). Relative hearing gain correlated positively with better pre-treatment speech discrimination scores (r=0.82, 81 degrees of freedom, p=0.009) and negatively with poorer pre-treatment pure tone averages (−r=0.082, 81 degrees of freedom, p=0.009). There was no correlation between the scores for hearing gain, relative hearing gain and recovery rate and: systemic diseases (p>0.05); time elapsed between onset of sudden hearing loss and initiation of treatment (p>0.05); type of audiogram on initial admission (p>0.05), except for midfrequency type of audiogram; and tinnitus (p>0.05).

Conclusions:

The outcome of sudden hearing loss was unaffected by systemic disease, tinnitus or type of audiogram (except for midfrequency type). The following were poor prognostic factors in the outcome of sudden hearing loss: female gender, presence of vertigo, initiation of treatment more than seven days after onset of hearing loss, and >40 dB hearing loss on admission.

Keywords

Sudden Hearing LossSensorineural DeafnessPrognosis
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 121 , Issue 11 , November 2007 , pp. 1035 - 1040
Copyright
Copyright © JLO (1984) Limited 2007

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