Editorial
Copyright ©The Author(s) 2015.
World J Otorhinolaryngol. May 28, 2015; 5(2): 41-43
Published online May 28, 2015. doi: 10.5319/wjo.v5.i2.41
Table 1 Criteria for the grading of hearing loss in sudden sensorineural hearing loss
Grade 1PTA < 40 dB
Grade 240 dB ≤ PTA < 60 dB
Grade 360 dB ≤ PTA < 90 dB
Grade 490 dB ≤ PTA
Evaluation of the initial audiogram should be performed within 2 wk of onset. PTA: Arithmetic mean of the five frequencies: 250, 500, 1000, 2000, and 4000 Hz.