Temporary threshold shift following ear canal microsuction
Taylor and Francis
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Objectives: To investigate a temporary threshold shift (TTS) of hearing and pain/discomfort caused by the microsuction procedure. Hearing loss induced by impacted cerumen was also investigated. Design: Impacted cerumen was removed from patients using microsuction. Hearing assessments were carried out before the procedure, immediately after and 1-week later. Hearing thresholds measured in different sessions were compared to determine the TTS caused by the microsuction procedure and hearing loss induced by impacted cerumen. A questionnaire was used to evaluate the pain/discomfort experienced by patients. Study Sample: 30 patients (50 ears) were recruited from a cerumen removal clinic. Results: Significant hearing loss caused by impacted earwax was found across individual frequencies (mean 11.4 dB, maximum 38.1 dB). A TTS appeared in 43/50 (86%) ears, ranging from 0 to 16.2 dB averaged across frequencies between 0.25 and 8 kHz, with the highest TTS at 6 kHz. Pain and discomfort levels were both rated low, the mean levels were 1.2 (SD = 0.5) and 1.6 (SD = 0.5) respectively on a scale from 1 to 10. Conclusions: Microsuction appears to be a well-tolerated and preferred procedure for removing impacted cerumen. Because of the significant TTS induced by the microsuction procedure, safety concerns from a hearing perspective should be raised with the patient.
International Journal of Audiology;
Cronin, T. and Zhao, F. (2020) 'Temporary threshold shift following ear canal microsuction: A comparative analysis measuring hearing levels before, immediately and 1-week after earwax removal by microsuction', International Journal of Audiology. DOI: 10.1080/14992027.2020.1746977.
Article published in International Journal of Audiology on 13 April 2020, available at: https://doi.org/10.1080/14992027.2020.1746977.
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
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