ĐỐI CHIẾU NGHIỆM PHÁP WEBER VỚI THÍNH LỰC ĐỒ ĐƠN ÂM TRONG CHẨN ĐOÁN ĐIẾC ĐỘT NGỘT

Abstract

The Weber test is used as part of the clinical examination for patients suspected of sudden sensorineural hearing loss. However, in Vietnam, the use of the Weber test is not routinely performed in ENT clinics. The study involved 53 patients with unilateral sudden sensorineural hearing loss who underwent the Weber test using tuning forks at frequencies of 512 Hz, 1024 Hz, 2048 Hz, and 4096 Hz. The sensitivity and specificity of the Weber test were analyzed for each tuning fork frequency. Results from the 53 patients with unilateral sudden hearing loss confirmed by audiometry indicated that the highest sensitivity of the Weber test was at a frequency of 1024 Hz, with a sensitivity of 62.2%. There was no statistically significant difference between the frequencies of 512 Hz and 1024 Hz, nor between 1024 Hz and 2048 Hz. The sensitivity of the Weber test at frequencies of 512 Hz and 4096 Hz was the same. Therefore, in clinical examinations, a tuning fork at 1024 Hz can be used as an initial diagnostic method for patients with sudden hearing loss. However, there are still certain errors, so pure tone audiometry is needed for accurate diagnosis.