Living in a box: Understanding acoustic parameters in the NICU environment

Christoph Reuter1*, Lisa Bartha-Doering2, Isabella Czedik- Eysenberg1,3, Marcus Maeder4, Matthias A. Bertsch5, Katharina Bibl6, Philipp Deindl7, Angelika Berger6 and Vito Giordano6

1Musicological Department (Acoustics/Music Psychology), University of Vienna, Vienna, Austria, 2Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria, 3Music Technology and Digital Musicology Lab, Institute for Musicology and Music Pedagogy, Osnabrück University, Osnabrück, Germany, 4Department of Engineering Physics and Computation, School of Engineering and Design, Technical University Munich, Munich, Germany, 5Department of Music Physiology, University of Music and Performing Arts Vienna, Vienna, Austria, 6Division of Neonatology, Pediatric Intensive Care and Neuropediatrics, Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria, 7Department of Neonatology and Pediatric Intensive Care Medicine, University Children’s Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

Background: In the last years, a significant body of scientific literature was dedicated to the noisy environment preterm-born infants experience during their admission to Neonatal Intensive Care Units (NICUs). Nonetheless, specific data on sound characteristics within and outside the incubator are missing. Therefore, this study aimed to shed light on noise level and sound characteristics within the incubator, considering the following domain: environmental noise, incubator handling, and respiratory support.

Methods: The study was performed at the Pediatric Simulation Center at the Medical University of Vienna. Evaluation of noise levels inside and outside the incubator was performed using current signal analysis libraries and toolboxes, and differences between dBA and dBSPL values for the same acoustic noises were investigated. Noise level results were furthermore classed within previously reported sound levels derived from a literature survey. In addition, sound characteristics were evaluated by means of more than 70 temporal, spectral, and modulatory timbre features.

Results: Our results show high noise levels related to various real-life situations within the NICU environment. Differences have been observed between A weighted (dBA) and unweighted (dBSPL) values for the same acoustic stimulus. Sonically, the incubator showed a dampening effect on sounds (less high frequency components, less brightness/sharpness, less roughness, and noisiness). However, a strong tonal booming component was noticeable, caused by the resonance inside the incubator cavity. Measurements and a numerical model identified a resonance of the incubator at 97 Hz and a reinforcement of the sound components in this range of up to 28 dB.

Conclusion: Sound characteristics, the strong low-frequency incubator resonance, and levels in dBSPL should be at the forefront of both the development and promotion of incubators when helping to preserve the hearing of premature infants.

 

Full Research Paper: https://www.frontiersin.org/articles/10.3389/fped.2023.1147226

 

 

 

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  • Pflege Professional:  Lärmpegel im Brutkasten für Frühchen riskant

  • pressetext. „Lärmpegel Im Brutkasten Für Frühchen Riskant“. 

  • US News & World Report. „Loud Incubators Might Damage Preemie Babies’ Hearing“. 

  • Microsoft Start: Brutkasten-Geräusche können Gehör von Frühchen schädigen

  • Drugs.com. „Loud Incubators Might Damage Preemie Babies’ Hearing - Drugs.Com MedNews“.  2

  • New Atlas: Scientists sound the alarm on incubator risk to babies' ears 

  • Watauga Democrat: Loud Incubators Might Damage Preemie Babies' Hearing

  • St. Louis Post-Dispatch: Loud Incubators Might Damage Preemie Babies' Hearing

  • Molpariya, Puja. „Not Just Delay In Language Acquisition: Hospital Noise Poses Serious Risk To Premature Babies’ Health That Could Last A Lifetime“. Revyuh (blog),

  • OTS.at. „Frühgeborene: Hohe Lärmbelastung im Brutkasten“.

  • Nau.ch : Geräusche in Brutkästen können Gehör von Frühgeborenen schädigen

  • www.scimetrica.com. „Intensive Care Incubators Resonate Sounds and Risk Damage to Preterm Infants’ Hearing, Scientists Say“, 27. März 2023.

  • MedicineNet: Loud Incubators Might Damage Preemie Babies' Hearing

  • Griffin Daily News: Loud Incubators Might Damage Preemie Babies' Hearing

  • THE STORIEST: Incubator noise can damage the hearing of premature babies

  • Scienmag. „Shh! Intensive Care Incubators Resonate Sounds and Risk Damage to Premature“. SCIENMAG: Latest Science and Health News (blog), 27. März 2023.

  • Frontiers. „ICU Incubators Risk Damage to Babies’ Hearing“. ScienceBlog.com, 27. März 2023.

  • HealthDay.com: Las incubadoras ruidosas podrían dañar el oído de los bebés prematuros

  • Austria Presse Agentur Science:  Geräusche von Inkubatoren auf der Intensivstation können das Gehör von Frühgeborenen schädigen

  • Uni Wien: Geräusche von Inkubatoren auf der Intensivstation können das Gehör von Frühgeborenen schädigen

  • Consumer.healthday. „Loud Incubators Might Damage Preemie Babies’ Hearing - Consumer Health News | HealthDay“. 27. März 2023.

  • Wien, Medizinischen Universität. „Inkubatoren auf der Intensivstation erzeugen Geräusche und können das Gehör von Frühgeborenen schädigen | MedUni Wien“. Medizinischen Universität Wien. 27. März 2023.