Effects of Incubator Noise on the Cochlea of the Newborn

Douek, Ellis; Dodson, H.C.; Bannister, L. H.; Ashcroft, P; Humphries, K.N.

doi:10.1016/s0140-6736(76)91088-6

Cited by 85 publications

(31 citation statements)

References 17 publications

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“…This is in accordance with earlier histological studies in which greater OHC damage was seen in young noise-exposed guinea pigs than in adults [Falk et al, 1974;Douek et al, 1976].…”

Section: Discussionsupporting

confidence: 93%

“…Falk et al [1974] and Douek et al [1976], looking at cochlear histology, found greater outer hair cell (OHC) damage in young guinea pigs than in adults, implying that the young mammalian ear is more sensitive to noise exposures than the adult ear. These studies have ramifications not only for newborns who are kept in incubators, and are thus continually exposed to low-level noise, but also for fetuses whose mothers are exposed to loud noises in the workplace throughout their pregnancy.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Long-Term Noise Exposure on the Developing and Developed Ear in the Rat

et al. 1999

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There have been reports that the developing ear is more sensitive than the adult ear to noise-induced hearing loss. This was investigated by testing auditory function in rats, both electrophysiologically and histologically, following exposure to broad-band noise (12 h/day for 15 days) at different stages of auditory development (neonates and adults), and also in age-matched controls. An exposure of 90 dB SPL broad-band noise caused no long-term change in auditory function in either age group. A higher exposure (102 dB SPL) caused greater long-term changes in hearing in the adult compared to the young noise-exposed rats, although histology showed greater damage to hair cells in the younger animals. Therefore, functionally, the developing ear does not seem more vulnerable than the developed ear to acoustic trauma.

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“…This is in accordance with earlier histological studies in which greater OHC damage was seen in young noise-exposed guinea pigs than in adults [Falk et al, 1974;Douek et al, 1976].…”

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effect of Long-Term Noise Exposure on the Developing and Developed Ear in the Rat

et al. 1999

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“…There are no adequately powered studies published that have assessed the impact of noise exposure on long-term neurodevelopmental outcome of newborn infants. However, animal data strongly suggest the damaging effects of constant noise exposure on the developing inner ear [18,19,20]. It is desirable that future NIV device design focuses on noise reduction.…”

Section: Discussionmentioning

confidence: 99%

Noise Levels of Neonatal High-Flow Nasal Cannula Devices - An in-vitro Study

König¹,

Stock²,

Jarvis³

2013

Neonatology

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Background: Excessive ambient noise levels have been identified as a potential risk factor for adverse outcome in very preterm infants. Noise level measurements for continuous positive airway pressure (CPAP) devices demonstrated that these constantly exceed current recommendations. The use of high-flow nasal cannula (HFNC) as an alternative non-invasive ventilation modality has become more popular in recent years in neonatal care. Objective: To study noise levels of two HFNC devices commonly used in newborns. As a comparison, noise levels of a continuous flow CPAP device were also studied. Methods: In-vitro study. The noise levels of two contemporary HFNC devices (Fisher & Paykel NHF™ and Vapotherm Precision Flow®) and one CPAP device (Dräger Babylog® 8000 plus) were measured in the oral cavity of a newborn manikin in an incubator in a quiet environment. HFNC flows of 4-8 l/min and CPAP pressures of 4-8 cm H₂O were applied. The CPAP flow was set at 8 l/min as per unit practice. Results: Vapotherm HFNC generated the highest noise levels, measuring 81.2-91.4 dB(A) with increasing flow. Fisher & Paykel HFNC noise levels were between 78.8 and 81.2 dB(A). The CPAP device generated the lowest noise levels between 73.9 and 77.4 dB(A). Conclusions: Both HFNC devices generated higher noise levels than the CPAP device. All noise levels were far above current recommendations of the American Academy of Pediatrics. In light of the long duration of non-invasive respiratory support of very preterm infants, less noisy devices are required to prevent the potentially adverse effects of continuing excessive noise exposure in the neonatal intensive care unit.

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“…However, one of the several weaknesses in this study was retrospective noise evaluations. Studies using animals have demonstrated an increased sensitivity of the developing cochlea to noise-induced damage, 13,14 but this effect has not been confirmed in humans.…”

Section: Potential Fetal Effectsmentioning

confidence: 99%

Noise: A Hazard for the Fetus and Newborn

1997

Pediatrics

436

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ABSTRACT. Noise is ubiquitous in our environment. High intensities of noise have been associated with numerous health effects in adults, including noise-induced hearing loss and high blood pressure. The intent of this statement is to provide pediatricians and others with information on the potential health effects of noise on the fetus and newborn. The information presented here supports a number of recommendations for both pediatric practice and government policy.

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Effects of Incubator Noise on the Cochlea of the Newborn

Cited by 85 publications

References 17 publications

Effect of Long-Term Noise Exposure on the Developing and Developed Ear in the Rat

Effect of Long-Term Noise Exposure on the Developing and Developed Ear in the Rat

Noise Levels of Neonatal High-Flow Nasal Cannula Devices - An in-vitro Study

Noise: A Hazard for the Fetus and Newborn

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