The Downrange Acoustic Toolbox: An Active Solution for Combat-Related Acute Acoustic Trauma

Area of Science:

• Military medicine
• Audiology
• Trauma care

Background:

• Frontline military personnel are susceptible to acute acoustic trauma (AAT) from impulse noise, potentially causing hearing loss and reduced operational effectiveness.
• Current hearing protection is not fully effective, necessitating early detection and treatment of AAT for optimal outcomes.
• Timely intervention for AAT is crucial for maintaining warfighter capabilities, preventing unnecessary case evacuations (CASEVAC), and preserving hearing health.

Purpose of the Study:

• To introduce a frontline protocol for assessing AAT in military personnel.
• To highlight the utility of the Downrange Acoustic Toolbox (DAT) for early AAT identification.
• To demonstrate the benefits of prompt AAT diagnosis and treatment on hearing preservation and personnel retention.

Main Methods:

• Development of a frontline assessment protocol by the UK Defence hearWELL research collaboration.
• Operational deployment of the US Department of Defense's Downrange Acoustic Toolbox (DAT) since 2019.
• Utilizing the DAT for point-of-injury assessment of AAT in frontline warfighters.

Main Results:

• The DAT has been successfully deployed to identify AAT requiring treatment.
• Implementation of the protocol led to improved hearing outcomes for casualties.
• The system helped reduce unnecessary repatriation of personnel.

Conclusions:

• Early identification and treatment of AAT are vital for military readiness and personnel well-being.
• The DAT provides a valuable tool for frontline AAT assessment and management.
• This approach supports hearing preservation, maintains fighting force capabilities, and aids in personnel retention.