When a baby is born too early, the neonatal intensive care unit (NICU) becomes their home. While these units provide life-saving care, they are often very loud environments. A review of 113 studies found that most NICUs have noise levels that go well above recommended limits for tiny patients.
Researchers identified three main sources of this noise: alarms, conversations among staff, and equipment used to support the infants. Specifically, breathing support devices were found to create the highest levels of internal noise, sometimes even louder than the general noise in the room.
While some changes like staff training or environmental tweaks can lower noise for a short time, these improvements rarely last long. Doctors also note a delicate balance: while loud noise is a concern, blocking out all sound could lead to auditory deprivation, where the baby doesn't get enough meaningful sound input.
Common questions
What are the main sources of noise in a NICU?
The primary sources of noise identified in the study include alarms, conversations among staff members, and equipment associated with incubators. Specifically, respiratory support devices were found to produce the highest levels of internal noise, sometimes exceeding the overall ambient noise of the unit.
Are there ways to reduce the noise for babies?
Interventions such as staff training, behavioral changes, and environmental modifications have been tested. While these methods can lead to short-term improvements in reducing noise levels, they rarely result in sustained, long-term reductions in the NICU environment.
Is it safe to block out all the noise?
There is a careful balance to consider. While high noise levels are a concern, experts note that excessive shielding might lead to auditory deprivation. This means if too much sound is blocked, the infant may not receive enough meaningful auditory input for their development.
