Abstract:
OBJECTIVES:Hearing loss after spinal anesthesia has been reported to be related to the transmission of a reduced subarachnoid pressure to the inner ear via the cochlear aqueduct due to loss of spinal fluid. However, there are also some controversies related to this phenomenon, which require systematic investigation. MATERIAL AND METHODS:The effect of spinal needle diameter on hearing loss was investigated using audiometric tests in a prospective comparative study of 30 patients who were scheduled for surgery with spinal anesthesia. The bony structure of the cochlear and vestibular aqueducts was determined from temporal bone CT scans. RESULTS:Four out of 15 patients (26.67%) treated with a 22 G spinal needle demonstrated hearing loss the day after surgery, which recovered within 2-5 weeks. However, none of the patients treated with a 27 G spinal needle had statistically significant hearing loss in either ear at any frequency. Three out of four patients with hearing loss had an acute-onset balance problem. There was no difference between the two groups in terms of the widths of the vestibular and cochlear aqueducts. CONCLUSIONS:It has been shown audiometrically that the diameter of the spinal needle used to induce spinal anesthesia seems to have an effect on subsequent hearing loss. The patency of the bony canal determines the transmission of pressure changes to the inner ear. However, the individual risk of this complication is not predictable as there is no radiological abnormality of the canal.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Cosar A,Yetiser S,Sizlan A,Yanarates O,Yildirim Adoi
10.1080/00016480410017143subject
Has Abstractpub_date
2004-12-01 00:00:00pages
1159-64issue
10eissn
0001-6489issn
1651-2251journal_volume
124pub_type
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journal_title:Acta oto-laryngologica
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更新日期:2001-04-01 00:00:00
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journal_title:Acta oto-laryngologica
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doi:
更新日期:2000-01-01 00:00:00
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更新日期:1990-09-01 00:00:00
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更新日期:2013-05-01 00:00:00
abstract::In this study, cytological examination of nasal secretions of 17 patients with cystic fibrosis (CF) was combined with quantitative determination of common inflammatory mediators. Results showed a normal cytogram in these patients. However, obvious mucosal inflammation is evidenced by significantly higher concentration...
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更新日期:1996-05-01 00:00:00
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更新日期:1977-09-01 00:00:00
abstract::A prospective study was carried out to objectively quantificate the most important predictive factors in idiopathic facial paralysis (Bell's palsy). Stepwise discriminant analysis was applied to data prospectively obtained from 570 patients with Bell's palsy treated at the ENT Department of La Paz Hospital between Jan...
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更新日期:1988-09-01 00:00:00
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更新日期:2006-06-01 00:00:00