Sensorineural Hearing Loss in Otolaryngology Floor Among Head and Neck Cancer Patients: A Prospective Cohort Study

Chronic static noise generated by wall-mounted humidifiers and suction systems during postoperative care poses a significant risk of sensorineural hearing loss (SNHL) among otolaryngology patients. This study aims to evaluate the intensity and duration of noise exposure and its impact on the prevalence of SNHL in postoperative patients. This prospective study included 27 postoperative head and neck surgery patients requiring tracheostomy, suctioning, Doppler monitoring, or humidified air. Participants were excluded if they had pre-existing hearing loss, prior chemoradiation therapy, or exposure to ototoxic medications. Noise levels were recorded using a sound dosimeter placed near patients' ears three times daily during the postoperative phase. The primary outcome was the prevalence of SNHL, expressed as a proportion with a 95% confidence interval (CI). During the first postoperative week, average noise levels were 87 dB at the wall mount and 69.3 dB at the head of the bed. Among the 24 patients who completed follow-up, 19 (80%) exhibited mild to moderate SNHL, while 5 (20%) had normal to mild SNHL. Three patients were lost to follow-up. Noise levels experienced by head and neck surgery patients during their postoperative hospital stay frequently exceed safe thresholds, posing a significant risk of hearing loss. These findings highlight the urgent need to revise care standards, develop noise mitigation strategies, and promote auditory health in hospital settings.