"Most parents assume the sleep machines are safe," Papsin said. He also suggests parents imagine the ideal sleep environment for their son or daughter, then work hard to recreate those quiet surroundings. He hopes these findings generate a conversation about what "dose" of sound parents want their baby exposed to. He said he wants parents and caregivers to be aware that while it's safe for infants to be around sound and noise, there is a "dose" of sound that could harm babies hearing. "The sounds that resonate best with a baby are the sweet sounds of Mom and Dad," Papsin said. Regular exposure to these sound volumes may put babies at risk of developing noise-induced hearing loss, according to the researchers.īesides being smaller and still developing, the ear canal of an infant is a little wider and a little straighter than that of an adult, he said. 3), which will appear in the April issue of the journal Pediatrics. Three machines generated potentially harmful levels of sound, that surpassed allowable limits for adult workplace noise, when placed on a crib rail.Īll but one model topped the decibel limits recommended for hospital nurseries even at an across-the-room distance, according to the study published online today (Mar. The results revealed that all 14 machines produced sound levels that exceeded acceptable noise limits for infants in hospital nurseries. Sound levels were checked at about 1 foot from the machine (similar to mounting the machine on a crib rail), more than 3 feet (placing it near a crib, for example on a nightstand), or more than 6.5 feet away (putting the device across the room). In the study, the researchers tested 14 different infant sound machines, measuring the sound levels produced when each model was set at maximum volume and placed at three distances from where an infant would sleep, simulating its location in a baby's room.
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