This paper presents a significant contribution through a scoping review of noise sources, their effects on human health, and methods for reducing noise in hospital environments. The review focuses on studies published between 2016 and 2024 that address noise sources in hospitals, their impact on patients and healthcare personnel, and strategies for noise reduction. The analysis was conducted using the MAXQDA commercial software (version 22.4.1) and utilized 454 codes. The findings revealed that conversations among healthcare staff, equipment noise, and clinical activities are the most prevalent sources of noise in hospitals. These are followed by noises from patients, alarms, and visitors. This ranking can help hospital managers prioritize resources when formulating noise reduction strategies. According to the reviewed articles, noise is closely linked to issues such as distraction, increased heart rate (tachycardia), sleep disorders, and reduced employee efficiency. The most frequently recommended approaches for managing noise include personnel training and raising awareness among staff. The results of this study emphasize that hospital noise reduction strategies should be comprehensive, incorporating both technical solutions—such as acoustic treatments and equipment noise reduction—and behavioral solutions, which include staff training and noise condition assessments.
JensenKRHvidmanLKierkegaardO, et al. Noise as a risk factor in the delivery room: a clinical study. PLoS One2019; 14(8): e0221860.
2.
Busch-VishniacIRyherdE.Hospital soundscapes: characterization, impacts, and interventions. Acoust Today2019; 15: 11.
3.
de Lima AndradeEda Cunha E SilvaDCde LimaEA, et al. Environmental noise in hospitals: a systematic review. Environ Sci Pollut Res2021; 28: 19629–19642.
4.
AhamedMFCampbellDHoranS, et al. Noise reduction in the neonatal intensive care unit: a quality improvement initiative. Am J Med Qual2018; 33(2): 177–184.
5.
FaalGDavoudiATaheriF, et al. Noise reduction based on training intervention and using visual signs in neonatal intensive care units (NICUs). Acoust Aust2020; 48(2): 309–314.
6.
GülşenMAydıngülüNArslanS.Physiological and psychological effects of ambient noise in operating room on medical staff. ANZ J Surg2021; 91(5): 847–853.
7.
Hernández-SalazarADGallegos-MartínezJReyes-HernándezJ.Level and noise sources in the neonatal intensive care unit of a reference hospital. Investig Educ Enferm2020; 38(3): e13.
8.
SmithSWOrtmannAJClarkWW.Noise in the neonatal intensive care unit: a new approach to examining acoustic events. Noise Health2018; 20(95): 121–130.
9.
TerziBAzizoğluFPolatŞ, et al. The effects of noise levels on nurses in intensive care units. Nurs Crit Care2019; 24(5): 299–305.
10.
YuCVFogliaJYenP, et al. Noise in the operating room during induction of anesthesia: impact of a quality improvement initiative. Can J Anesth2022; 69(4): 494–503.
11.
SunYKojimaSNakaohkuboK, et al. Analysis and evaluation of indoor environment, occupant satisfaction, and energy consumption in general hospital in China. Buildings2023; 13(7): 1675.
12.
VremanJvan LoonLMvan den BiggelaarW, et al. Contribution of alarm noise to average sound pressure levels in the ICU: an observational cross-sectional study. Intensive Crit Care Nurs2020; 61: 102901.
13.
AurélioFSTochettoTM.Ruído em uma Unidade de Terapia Intensiva neonatal: mensuração e percepção de profissionais e pais. Rev Paul Pediatr2010; 28: 162–169.
14.
JoshiGTadaN.Analysis of noise level in neonatal intensive care unit and post natal ward of a tertiary care hospital in an urban city. Int J Contemp Pediatr2016; 3(4): 1358–1361.
15.
CingolaniMDe SalvioDD'OrazioD, et al. Clustering analysis of noise sources in healthcare facilities. Appl Acoust2023; 214: 109660.
16.
DarbyshireJLMüller-TrapetMCheerJ, et al. Mapping sources of noise in an intensive care unit. Anaesthesia2019; 74(8): 1018–1025.
17.
DasAKishoreJ.Noise levels and annoyance among staff in a tertiary care hospital in North India: a cross-sectional study. Arch Environ Occup Health2023; 78(9–10): 471–482.
18.
HasegawaYRyherdERyanCS, et al. Examining the utility of perceptual noise categorization in pediatric and neonatal hospital units. HERD2020; 13(4): 144–157.
19.
JerlehagCLeePJParkSH, et al. Acoustic environments of patient room in a typical geriatric ward. Appl Acoust2018; 133: 186–193.
20.
SongZLeePJHamptonT.Acoustic environments of intensive care units during the COVID-19 pandemic. Appl Acoust2022; 199: 109037.
21.
SawyerLKKempSJamesPAB, et al. Noisy and restless: 24 h in an NHS community hospital ward, a qualitative and quantitative analysis of the patient environment. Build Environ2020; 175: 106795.
22.
BasnerMBabischWDavisA, et al. Auditory and non-auditory effects of noise on health. Lancet2014; 383(9925): 1325–1332.
23.
EkhlasHPouraghaHMonazzamM, et al. Association between moderate noise level and depression, anxiety, and stress in non-industrial employees. J Health Saf Work2021; 11(4): 720–736.
24.
HegewaldJSchubertMFreibergA, et al. Traffic noise and mental health: a systematic review and meta-analysis. Int J Environ Res Public Health2020; 17(17): 6175.
25.
KlompmakerJOJanssenNAHBloemsmaLD, et al. Associations of combined exposures to surrounding green, air pollution, and road traffic noise with cardiometabolic diseases. Environ Health Perspect2019; 127(8): 87003.
26.
LeeSLeeWRohJ, et al. Symptoms of nervous system related disorders among workers exposed to occupational noise and vibration in Korea. J Occup Environ Med2017; 59(2): 191–197.
EijkelenboomABluyssenPM.Comfort and health of patients and staff, related to the physical environment of different departments in hospitals: a literature review. Intell Build Int2022; 14(1): 95–113.
29.
YararOTemizsoyEGünayO.Noise pollution level in a pediatric hospital. Int J Environ Sci Technol2019; 16: 5107–5112.
30.
JosephAUlrichR.Sound control for improved outcomes in healthcare settings. The Center for Health Design, 2007.
AbbasiHZiaeiMSalimiK, et al. Noise pollution, annoyance, and sensitivity; its impact on general health and aggression of hospital staffs. Curr Psychol2024; 43(16): 14171–14182.
33.
AbbasiMTokhiMOEyvazzadehN, et al. Prioritization of noise abatement methods for controlling hospital noise pollution. J Low Freq Noise Vib Active Control2024; 43: 1126–1138. https://doi.org/10.1177/14613484241245002
34.
AhmadJGAllenDZEricksonS, et al. Noise exposure in pediatric otolaryngology clinic: a sound survey of a single-institution tertiary care facility. Am J Otolaryngol2023; 44(4): 103913.
35.
CaseyLFucileSFlavinM, et al. A two-pronged approach to reduce noise levels in the neonatal intensive care unit. Early Hum Dev2020; 146: 105073.
36.
CzaplikMRossaintRKaliciakJ, et al. Psychoacoustic analysis of noise and the application of earplugs in an ICU: a randomised controlled clinical trial. Eur J Anaesthesiol2016; 33(1): 14–21.
37.
PalJTaywadeMPalR, et al. Noise pollution in intensive care unit: a hidden enemy affecting the physical and mental health of patients and caregivers. Noise Health2022; 24(114): 130–136.
38.
VremanJLemsonJLantingC, et al. The effectiveness of the interventions to reduce sound levels in the ICU: a systematic review. Crit Care Explor2023; 5(4): e0885.
39.
XieHKangJMillsGH.Clinical review: the impact of noise on patients’ sleep and the effectiveness of noise reduction strategies in intensive care units. Crit Care2009; 13: 208.
40.
CoiadoOVergaraFVergaraL.Noise pollution in hospitals and its impacts on the health care community and patients. J Acoust Soc Am2022; 152(4_Supplement): A190.
Centre for Reviews and Dissemination. Systematic reviews: CRD’s guidance for undertaking reviews in healthcare. York: University of York NHS Centre for Reviews & Dissemination, 2009.
43.
LiberatiAAltmanDGTetzlaffJ, et al. The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate healthcare interventions: explanation and elaboration. BMJ2009; 339: b2700. https://doi.org/10.1136/bmj.b2700
44.
PageMJMcKenzieJEBossuytPM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ2021; 372: n71. https://doi.org/10.1136/bmj.n71
45.
PluyePRobertECargoM, et al. Proposal: a mixed methods appraisal tool for systematic mixed studies reviews. McGill University, 2011.
46.
PaceRPluyePBartlettG, et al. Testing the reliability and efficiency of the pilot mixed methods appraisal tool (MMAT) for systematic mixed studies review. Int J Nurs Stud2012; 49(1): 47–53.
47.
EmarMSmithECoatsTJ.Background noise in an emergency department: an observational study from staff and patient perspectives. medRxiv, 2022. https://doi.org/10.1101/2022.05.20.22275148
48.
PollockABergeE.How to do a systematic review. Int J Stroke2018; 13(2): 138–156.
49.
CrawfordKJBarnesLAPetersTM, et al. Identifying determinants of noise in a medical intensive care unit. J Occup Environ Hyg2018; 15(12): 810–817.
50.
Hernández-MolinaRJiménezJLBRodriguez-MontañoV, et al. Characterizing the acoustic environment in a neonatal intensive care unit. Appl Acoust2020; 165: 107301.
51.
NaefACKnobelSEJRuettgersN, et al. Methods for measuring and identifying sounds in the intensive care unit. Front Med2022; 9: 836203.
52.
AlthahabAQJVuksanovicBAl-MosawiM, et al. Assessing the acoustic noise in intensive care units via deep learning technique. Acoust Aust2024; 52(2): 209–224.
53.
ArmbrusterCWalzerSWitekS, et al. Noise exposure among staff in intensive care units and the effects of unit-based noise management: a monocentric prospective longitudinal study. BMC Nurs2023; 22(1): 460.
54.
DengZXieHKangJ.The acoustic environment in typical hospital wards in China. Appl Acoust2023; 203: 109202.
55.
KulkarniM.Measuring the recurring frequency of noise producing sources in intensive care units (ICUs) of a tertiary care hospital in India. Int J Healthc Manag2025; 18: 132–140. https://doi.org/10.1080/20479700.2023.2277985
56.
RyanKMGagnonMHannaT, et al. Noise pollution: do we need a solution? An analysis of noise in a cardiac care unit. Prehosp Disaster Med2016; 31(4): 432–435.
57.
LouisMGrabillNStromP, et al. Leading through noise: operating room noise challenges for staff and leadership techniques to ensure optimal operational performance. Cureus2024; 16(9): e69569.
58.
HullandTSuAKinganM.Noise in an inpatient hospital ward in New Zealand. Build Acoust2020; 27(4): 299–309.
59.
DaraisehNMHoyingCLVidonishWP, et al. Noise exposure on pediatric inpatient units. J Nurs Adm2016; 46(9): 468–476.
60.
LiXLiYGuoW, et al. Effects of ambient noise isolation on illness severity and mental health among hospitalized children with asthma: retrospective study. Noise Health2024; 26(121): 128–135.
61.
JeongCHJakobsenHCW. Influence of architectural layouts on noise levels in Danish emergency departments. J Build Eng2021; 42: 102449.
62.
RammKMannixTParryY, et al. A comparison of sound levels in open plan versus pods in a neonatal intensive care unit. HERD2017; 10(3): 30–39.
63.
ImbriacoGCapitanoMRocchiM, et al. Relationship between noise levels and intensive care patients' clinical complexity: an observational simulation study. Nurs Crit Care2024; 29(3): 555–563.
64.
Łozińska-CzerniakASalamończykMDmoch-GajzlerskaE, et al. Analysis of the sound environment and the sound level in the delivery room in the first hour of a newborn’s life. J Mother Child2020; 24(1): 33–38.
65.
GivMDSaniKGAlizadehM, et al. Evaluation of noise pollution level in the operating rooms of hospitals: a study in Iran. Int Med Appl Sci2017; 9(2): 61–66.
66.
WangXZengLLiG, et al. A cross-sectional study in a tertiary care hospital in China: noise or silence in the operating room. BMJ Open2017; 7(9): e016316.
67.
NaefACKnobelSEJRuettgersN, et al. Characterization of sound pressure levels and sound sources in the intensive care unit: a 1 week observational study. Front Med2023; 10: 1219257.
68.
ChenCY.Monitoring time-varying noise levels and perceived noisiness in hospital lobbies. Build Acoust2021; 28(1): 35–55.
69.
BanQChenBKangJ, et al. Noise in maternity wards: a research on its contributors and sources. HERD2021; 14(2): 192–203.
70.
HuLLiuQYuanH, et al. Efficacy of noise reduction bundle in reducing sound levels in a level II neonatal care unit in China. Transl Pediatr2020; 9(6): 750–756.
71.
DengZXieHKangJ.The effectiveness of acoustic treatments in general hospital wards in China. Build Environ2023; 244: 110728.
72.
SecchiSSetolaNMarziL, et al. Analysis of the acoustic comfort in hospital: the case of maternity rooms. Buildings2022; 12(8): 1117.
73.
LamBFanEMPOoiK, et al. Assessing the perceived indoor acoustic environment quality across building occupants in a tertiary-care public hospital in Singapore. Build Environ2022; 222: 109403.
74.
SelimAMSaeedDMSolimanNT, et al. Achieving acoustic comfort in medical health care units: Dr. Plaza Capital Medical Health Care Unit. A case study. Romanian J Acoust Vib2024; 21(1): 43–52.
75.
AndradeELde LimaEAMartinsACG, et al. Urban noise assessment in hospitals: measurements and mapping in the context of the city of Sorocaba, Brazil. Environ Monit Assess2024; 196(3): 267.
76.
LinXChenCY.Research on the performance, measurement, and influencing factors of the acoustic environment in hospital buildings. Appl Sci2024; 14(16): 7219.
77.
SheridanHPlazaEHendrenG, et al. Noise levels during cesarean delivery: a prospective observational study. Int J Obstet Anesth2021; 48: 103211.
78.
AstinFStephensonJWakefieldJ, et al. Night-time noise levels and patients’ sleep experiences in a medical assessment unit in Northern England. Open Nurs J2020; 14(1): 80–91.
79.
JonescuEEFarrelBRamanayakaCE, et al. Mitigating intensive care unit noise: design-led modeling solutions, calculated acoustic outcomes, and cost implications. HERD2024; 17: 220–238. https://doi.org/10.1177/19375867241237501
80.
AlduaisSASalamaKF.Assessment of ambient-noise exposure among female nurses in surgical cardiac intensive care unit. J Multidiscip Healthc2019; 12: 1007–1011.
81.
AmoateyPAl-HarthyIAl-MushaifariMA, et al. Effect of ambient noise on indoor environments in a health care facility in Oman. Environ Sci Pollut Res2022; 29(10): 15081–15097.
82.
JosephBEMehazabeenHUM. Noise pollution in hospitals - a study of public perception. Noise Health2020; 22(104): 28–33.
83.
KellerSTschanFSemmerNK, et al. Noise in the operating room distracts members of the surgical team. An observational study. World J Surg2018; 42: 3880–3887.
84.
Arsal YıldırımSKurtHSaygıE, et al. Evaluation of the relationship between occupational noise exposure and stress levels in a healthcare facility. Int J Occup Saf Ergon2024; 30(3): 977–984.
85.
IdreesSSabaretnamMChandG, et al. Noise level and surgeon stress during thyroidectomy in an endocrine surgery operating room. Head Neck2024; 46(1): 37–45.
86.
PassosPSFioriniAC.Perception and effects of noise in employees of a university hospital. Res Soc Dev2022; 11(2): e51211225998. https://doi.org/10.33448/rsd-v11i2.25998
87.
AlidostiMBabaei HeydarabadiABaboliZ, et al. Association between job burnout and noise pollution among nurses in Behbahan city, Iran. J Fundam Ment Health2016; 18(2): 103–108.
88.
Lacerda CostaGMoreira de LacerdaABMarquesJ. Noise on the hospital setting: impact on nursing professionals’ health. Rev CEFAC2013; 15: 642–652.
89.
TangMLiuLCaiJ, et al. Effect of noise in the emergency department on occupational burnout and resignation intention of medical staff. Noise Health2024; 26(121): 102–106.
90.
SchmidtNGerberSMZanteB, et al. Effects of intensive care unit ambient sounds on healthcare professionals: results of an online survey and noise exposure in an experimental setting. Intensive Care Med Exp2020; 8.1: 34.
91.
PeislSSánchez-TaltavullDGuillen-RamirezH, et al. Noise in the operating room coincides with surgical difficulty. BJS Open2024; 8(5): zrae098.
92.
BereuterJPGeisslerMEGeisslerR, et al. Impact of operative room noise on laparoscopic performance-a prospective, randomized crossover trial. J Surg Res2024; 302: 648–655.
93.
TsiouCEfthymiatosGKatostarasT.Noise in the operating rooms of Greek hospitals. J Acoust Soc Am2008; 123(2): 757–765.
94.
RestinTGasparMBasslerD, et al. Newborn incubators do not protect from high noise levels in the neonatal intensive care unit and are relevant noise sources by themselves. Children2021; 8(8): 704.
95.
KooshanfarZAshrafiSParyadE, et al. Sources of noise and their effects on nurses in intensive care units: a cross sectional study. Int J Afr Nurs Sci2022; 16: 100403.
96.
RichardsonAThompsonACoghillE, et al. Development and implementation of a noise reduction intervention programme: a pre- and postaudit of three hospital wards. J Clin Nurs2009; 18(23): 3316–3324.
97.
GabryschCHAndersSIDressler-SteinbachI, et al. Reduction of noise levels during caesarean births through audiovisual feedback is associated with lower stress levels for patients. Birth2025; 52: 157–166. https://doi.org/10.1111/birt.12878
98.
CamuccioCASanaviaMCutroneF, et al. Noise levels in an acute psychiatric unit: an exploratory observational study. Issues Ment Health Nurs2019; 40(6): 493–502.
99.
AlzoubiHHAttiaAS.Assessment of the acoustical standards in patient care units in Jordanian national hospitals in light of the international criteria: case of King Abdullah University Hospital. Alex Eng J2019; 58(4): 1205–1213.
100.
BringelJMAAbreuIMunizMMC, et al. Excessive noise in neonatal units and the occupational stress experienced by healthcare professionals: an assessment of burnout and measurement of cortisol levels. Healthcare2023; 11(14): 2002.
101.
TaskinODiselNRYilmazM.Amidst the clamor: effects of emergency department noise on physicians' health and attention. Am J Emerg Med2024; 76: 87–92.
102.
ShakhtourLSongSOrobelloNC, et al. Evaluation of noise exposure levels in pediatric ENT operating rooms. Otolaryngol Head Neck Surg2024; 171(4): 1226–1231.
