Abstract

BACKGROUND: While meaningful sound (such as parents’ voices) stimulates proper development, noise in excess of 45 decibels (dB) can have adverse effects on the growth and neurodevelopment of neonates. Excessive auditory stimulation can also cause cochlear damage. In addition, numerous physiologic changes can be associated with excess noise, including apnea, bradycardia, hypertension, decreased perfusion, and lower oxygen saturation levels. Despite research documenting the negative effects noise has on the developing neonate, infants in the neonatal intensive care unit (NICU) are often exposed to noise that exceeds recommended levels. …

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