Feasibility of noise reduction by a modification in ICU environment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F16%3A00065258" target="_blank" >RIV/00159816:_____/16:00065258 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0967-3334/37/7/1041" target="_blank" >http://dx.doi.org/10.1088/0967-3334/37/7/1041</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0967-3334/37/7/1041" target="_blank" >10.1088/0967-3334/37/7/1041</a>

Result language

angličtina

Original language name

Feasibility of noise reduction by a modification in ICU environment

Original language description

Noise is a proven cause of wakefulness and qualitative sleep disturbance in critically ill patients. A sound pressure level reduction can improve sleep quality, but there are no studies showing the feasibility of such a noise reduction in the intensive care unit (ICU) setting. Considering all available evidence, we redesigned two ICU rooms with the aim of investigating the physiological and clinical impact of a healing environment, including a noise reduction and day-night variations of sound level. Within an experimental design, we recorded 96 h of sound-pressure levels in standard ICU rooms and the modified ICU rooms. In addition, we performed a sound source observation by human observers. Our results show that we reduced A-weighted equivalent sound pressure levels and maximum sound pressure levels with our architectural interventions. During night-time, the modification led to a significant decrease in 50 dB threshold overruns from 65.5% to 39.9% (door side) and from 50% to 10.5% (window side). Sound peaks of more than 60 decibels were significantly reduced from 62.0% to 26.7% (door side) and 59.3% to 30.3% (window side). Time-series analysis of linear trends revealed a significantly more distinct day-night pattern in the modified rooms with lower sound levels during night-times. Observed sound sources during night revealed four times as many talking events in the standard room compared to the modified room. In summary, we show that it is feasible to reduce sound pressure levels using architectural modifications.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BO - Biophysics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological Measurement

ISSN

0967-3334

e-ISSN

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Volume of the periodical

37

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

1041-1055

UT code for WoS article

000380814700009

EID of the result in the Scopus database

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