{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T08:02:31Z","timestamp":1791014551818,"version":"4.1.0"},"reference-count":29,"publisher":"Springer Publishing Company","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neonatal Network"],"published-print":{"date-parts":[[2005,11]]},"abstract":"<jats:p><jats:bold>Purpose:<\/jats:bold>Elevated sound levels in the NICU may contribute to undesirable physiologic and behavioral effects in preterm infants. This study describes sound levels in a busy NICU in the southeastern U.S. and compares the findings with recommended NICU noise level standards.<\/jats:p><jats:p><jats:bold>Design:<\/jats:bold>NICU sound levels were recorded continuously at nine different locations within the NICU. Hourly measurements of loudness equivalent (Leq) sound level, sound level exceeded 10 percent of the time (L<jats:sub>10<\/jats:sub>), and maximum sound level (Lmax) were determined.<\/jats:p><jats:p><jats:bold>Sample:<\/jats:bold>Sound levels were sampled from nine different locations within the NICU.<\/jats:p><jats:p><jats:bold>Main Outcome Variable:<\/jats:bold>Sound levels are described using the hourly, A-weighted Leq, L<jats:sub>10<\/jats:sub>, and Lmax.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold>The overall average hourly Leq (M = 60.44 dB, range = 55\u201368 dB), L<jats:sub>10<\/jats:sub>(M = 59.26 dB, range = 55\u201366 dB), and Lmax (M = 78.39, range = 69\u201393 dB) were often above the recommended sound levels (hourly Leq &lt;50 dB, L10 &lt;55 dB, and 1-second Lmax &lt;70 dB). In addition, certain times of day, such as 6\u20137 AM and 10 AM\u201312 noon, were noisier than other times of day.<\/jats:p>","DOI":"10.1891\/0730-0832.24.6.33","type":"journal-article","created":{"date-parts":[[2011,11,16]],"date-time":"2011-11-16T14:50:01Z","timestamp":1321455001000},"page":"33-37","source":"Crossref","is-referenced-by-count":62,"title":["Elevated Sound Levels within a Busy NICU"],"prefix":"10.1891","volume":"24","author":[{"given":"Charlene","family":"Krueger","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan","family":"Wall","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leslie","family":"Parker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rose","family":"Nealis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"793","published-online":{"date-parts":[[2005,11,1]]},"reference":[{"issue":"8 part 2","key":"1","article-title":"Development of the ear and hearing.","volume":"20","author":"JW. 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