Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Eighth nerve aplasia and hypoplasia in cochlear implant candidates: The clinical perspective
Autore:
Bamiou, DE; Worth, S; Phelps, P; Sirimanna, T; Rajput, K;
Indirizzi:
Great Ormond St Hosp Children, Cochlear Implant Program, London WC1N 3JH, England Great Ormond St Hosp Children London England WC1N 3JH WC1N 3JH, England Great Ormond St Hosp Children, Dept Audiol, London WC1N 3JH, England GreatOrmond St Hosp Children London England WC1N 3JH WC1N 3JH, England Royal Natl Throat Nose & Ear Hosp, Dept Radiol, London WC1X 8DA, England Royal Natl Throat Nose & Ear Hosp London England WC1X 8DA X 8DA, England
Titolo Testata:
OTOLOGY & NEUROTOLOGY
fascicolo: 4, volume: 22, anno: 2001,
pagine: 492 - 496
SICI:
1531-7129(200107)22:4<492:ENAAHI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
SENSORINEURAL HEARING-LOSS; CHARGE ASSOCIATION; TOMOGRAPHY; DIAGNOSIS; EAR;
Keywords:
cochlear implantation; eighth nerve aplasia; eighth nerve hypoplasia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Rajput, K Great Ormond St Hosp Children, Cochlear Implant Program, Great Ormond St, London WC1N 3JH, England Great Ormond St Hosp Children Great Ormond St London England WC1N 3JH
Citazione:
D.E. Bamiou et al., "Eighth nerve aplasia and hypoplasia in cochlear implant candidates: The clinical perspective", OTOL NEURO, 22(4), 2001, pp. 492-496

Abstract

Objective: To identify the clinical and radiologic charaeteristics of aplasia and hypoplasia of the eighth nerve. Study Design: Retrospective case-note review. Setting: Cochlear implant program. Patients: All children at the authors' institution in whom the cochlear implant assessment failed because of absence or hypoplasia of the eighth nerve. Intervention: Computed tomography of petrous bones and magnetic resonance imaging of the brain. Main Outcome Measures: Presence or absence of eighth nerve and other radiologic factors contraindicating implantation. Results: Of 143 cochlear implant candidates, 237 were judged ineligible for cochlear implantation. The preimplant assessment failed in 10 candidates of 143 because of bilateral aplasia or hypoplasia of the eighth nerve (7 cases) or unilateral aplasia or hypoplasia of the eighth nerve and a contraindication to operation on the other side (3 cases). The aplasia or hypoplasia of the eighth nerve was confirmed by magnetic resonance imaging in seven cases (5%): six were syndromic (3 CHARGE, 1 VATERRAPADILLINO, 1 Mobius, 1 Okihiro), and one was nonsyndromic autosomal-recessive. All seven children had delayed motor milestones and absence of auditory brainstem responses. Conclusion: Aplasia and hypoplasia of the eighth nerve are not uncommon inpediatric cochlear implant candidates, particularly in the presence of a syndrome such as CHARGE. Magnetic resonance imaging of the brain is mandatory before implantation because it can identify the presence or absence of the eighth nerve. Parents of children with profound hearing loss, delayed motor milestones, absence of auditory brainstem responses, and a syndromic diagnosis, should be made aware of this possible abnormality.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/12/19 alle ore 14:27:46