| work Baa BC Clinical Opinion (continued)

Worker last name First name Middle initial | WorkSafeBC claim number
HOLAND MARK 42647461

or annoying, it is not considered hazardous to hearing. The noise level is similar to a typical office environment or
that of average conversation and would not be unique to that particular work environment. In other words, it is
likely that acoustic events at work and outside of work could potentially trigger the worker’s migraines.

Based on the evidence on file, the main driving factors of the worker’s complaints are likely his pre-existing and
non-occupational conditions of migraines and noise sensitivity, rather than the incident itself.

References:

Alberti, P. (1998). Traumatic sensorineural hearing loss. In H. Ludman & T. Wright (Eds.), Diseases of the Ear. (pp. 483-494).
New York: Oxford University Press. (Original work published 1963)

Axelsson, A., & Hamernik, R. P. (1987). Acute acoustic trauma. Acta Otolaryngol (Stockh), 104: 225-233.

Dobie, R. A. (1995). Prevention of noise-induced hearing loss. Archives of Otolaryngology: Head and Neck Surgery, 124, 385-
391.

Kirchner, D., Evenson, E., Dobie, R., Rabinowitz, P., Crawford, J., Kopke, R., & Hudson, T. (2012). Occupational Noise-Induced
Hearing Loss. ACOEM Task Force on Occupational Hearing Loss. Journal of Occupational and Environmental Medicine, 54,
106-108.

McFerran, D., Baguley, D. (2007). Acoustic shock. The Journal of Laryngology & Otology, (121) p. 301-305.

Melnick, W. (1998). Hearing loss from noise exposure. In C. Harris, (Ed.), Handbook of Acoustical Measurements and Noise
Control. (pp.18.1-18.19). Woodbury NY: Acoustical Society of America (Original work published 1957).

Milhinch, J. (2002). Acoustic shock injury: real or imaginary? Retrieved August 6, 2002 from www.audiology online.com

Parker, W., Parker, V., Parker, G. & Parker, A. (2014) ‘Acoustic shock’: A new occupational disease? Observations from clinical
and medico-legal practice. /nternational Journal of Audiology, 53: 764-769.

Price, G. (1986). Impulse Noise Hazard as a Function of Level and Spectral Distribution. Life Sciences, Series: ANATO
Advanced Studies Institute Series, 111, 20-30.

. Stewart, M., Pankiw, R., Lehman, M., & Simpson, T. (2002). Hearing Loss and Hearing Handicap in Users of Recreational

11.

Firearms. Journal American Academy of Audiology, 13, 160-168.
Westcott (2006). Acoustic shock injury (ASI). Acta Oto-Laryngologica, 126, 54-58.

Opinion date (yyyy-mm-da)
2026-03-20

Opinion provided by

Name:
Title:

Flora Pang, M.Sc., RAUD, Aud (C)
Audiologist Advisor

Personal information on this form is collected for the purposes of administering a worker's compensation claim by WorkSafeBC in accordance with the Workers Compensation Act
and the Freedom of Information and Protection of Privacy Act. For further information about the collection of personal information, please contact WorkSafeBC’s Freedom of
Information Coordinator at PO Box 2310 Stn Terminal, Vancouver BC, V6B 3W5, or telephone 604.279.8171.

68B86 (R20/03) Page 5 of 5 @)

of