| Noise levels within the ear and post-nasal space in neonates in intensive care. | |
| | |
MedLine Citation:
|
PMID: 12819165 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Noise exposure in neonatal units has long been suspected of being a cause of hearing loss associated with such units. The noise intensity to which the neonate is exposed varies with the type of ventilatory support used. Also, the post-nasal space is an enclosed cavity that is close to the inner ear and an area of turbulent and hence potentially noisy airflow. Aim: To determine noise intensities within the ear and post-nasal space in neonates on different modes of ventilatory support using probe microphones, measures previously not undertaken. METHODS: A portable instrument with a probe microphone was used for the measurements. Three groups of infants were included: (a) those receiving no respiratory support (NS); (b) those receiving conventional ventilation (CV); (c) those receiving continuous positive airways pressure (CPAP) support. RESULTS: The mean in-the-ear noise intensities (at 1 kHz) were 41.7 dB SPL (NS), 39.5 dB SPL (CV), and 55.1 dB SPL (CPAP). The noise intensities in the post-nasal space in those receiving CPAP support were higher than in the other groups, reached mean levels of up to 102 dB SPL at some frequencies, and increased with increasing flow rates. CONCLUSIONS: The most important finding is the high noise intensities in the post-nasal space of those receiving CPAP support. Given the proximity of the post-nasal space to the inner ear, enough noise could be transmitted, especially in infants receiving the higher flow rates, to cause cochlear damage and hence hearing loss. It would therefore be wise, wherever possible, to avoid using the higher flow rates. |
| | |
Authors:
|
S S Surenthiran; K Wilbraham; J May; T Chant; A J B Emmerson; V E Newton |
Related Documents
:
|
9735895 - Measuring human ventilation for apnoea detection using an optical encoder. 16396845 - Endotracheal intubation attempts during neonatal resuscitation: success rates, duration... 10516395 - Early (4-7 days of age) dexamethasone therapy for prevention of chronic lung disease in... 20880155 - Cannot ventilate-cannot intubate an infant: surgical tracheotomy or transtracheal cannula? 715495 - Hepatic hemangioendotheliomas and hyperbilirubinemia. 15054405 - Do early infant feeding patterns relate to breast-feeding continuation and weight gain?... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Archives of disease in childhood. Fetal and neonatal edition Volume: 88 ISSN: 1359-2998 ISO Abbreviation: Arch. Dis. Child. Fetal Neonatal Ed. Publication Date: 2003 Jul |
Date Detail:
|
Created Date: 2003-06-23 Completed Date: 2003-08-27 Revised Date: 2009-11-18 |
Medline Journal Info:
|
Nlm Unique ID: 9501297 Medline TA: Arch Dis Child Fetal Neonatal Ed Country: England |
Other Details:
|
Languages: eng Pagination: F315-8 Citation Subset: AIM; IM |
Affiliation:
|
Department of Audiological Medicine and Neuro-otology, Medway Maritime Hospital, Kent, UK. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Cochlea
/
injuries Ear Environmental Exposure / adverse effects, analysis* Hearing Loss, Noise-Induced* Hearing Loss, Sensorineural / etiology* Humans Infant, Newborn Infant, Premature* Intensive Care, Neonatal* Noise* Nose Positive-Pressure Respiration Time Factors Ventilators, Mechanical / adverse effects* |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Fever in healthy asymptomatic newborns during the first days of life.
Next Document: Effects of gestational age and prenatal and perinatal events on the coagulation status in premature ...