Auditory Environmental Effects in Surgical Settings

Surgical environments are inherently noisy, with continuous background sounds generated by instrumentation, equipment alarms, ventilation systems and human activity. These auditory stimuli can interfere with team communication, heighten mental workload and, in some cases, impair fine motor performance. Elevated noise levels are associated with increased stress among surgeons and theatre staff, potential distraction and audible masking of critical verbal cues. Measurements often reveal sound pressures exceeding recommended occupational thresholds, raising concerns about cumulative noise-induced hearing loss among personnel. Conversely, controlled auditory inputs such as preferred music have been explored as a means to modulate stress and maintain focus. Overall, auditory environmental effects in operating rooms have global significance for patient safety, staff well-being and procedural efficiency, underpinning calls for systematic noise management strategies and evidence-based soundscapes.

Research from Nature Portfolio

One large-scale analysis of nearly 600 visceral surgical procedures utilised second-by-second A-weighted sound‐level recordings to characterise noise patterns across diverse operation types, methods and complexity grades. By normalising surgery duration and mapping decibel trajectories, the study revealed that many procedures regularly exceed 55 dBA, with more complex operations showing higher exposure. The fine-grained data illustrated peaks and sustained levels that pose stress risks to patients and staff alike. Findings support active noise management interventions, including architectural acoustics and procedural protocols, to mitigate auditory stressors and improve surgical performance and outcomes.

Auditory Environmental Effects in Surgical Settings publication trend

The graph below shows the total number of articles in auditory environmental effects in surgical settings across all publications each year (not limited to Nature Index journals).

Technical terms

A-weighted decibel (dBA): A unit of sound pressure level adjusted to reflect human ear sensitivity, commonly used to quantify noise exposure in occupational settings.

Noise-induced hearing loss (NIHL): Permanent threshold shift in auditory sensitivity resulting from prolonged or excessive exposure to high sound levels.

Mental workload: Cognitive demand placed on an individual during task performance, often assessed by structured indices to gauge stress and attentional resources.

References

1. Noise in the operating room coincides with surgical difficulty. BJS Open (2024).
2. The Perception and Attitude Toward Noise and Music in the Operation Room: A Systematic Review. Journal of Surgical Research (2021).
3. The effect of preferred music on mental workload and laparoscopic surgical performance in a simulated setting (OPTIMISE): a randomized controlled crossover study. Surgical Endoscopy (2020).
4. Noise exposure during robot-assisted total knee arthroplasty. Archives of Orthopaedic and Trauma Surgery (2022).
5. Noise patterns in visceral surgical procedures: Analysis of second-by-second dBA data of 599 procedures over the course of one year. Scientific Reports (2020).
6. Effect of Various OR Noise on Fine Motor Skills, Cognition, and Mood. Surgery Research and Practice (2019).