ABSTRACT
Background and Objectives@#In this study, we introduce our method of hearing aid (HA) verification using real ear measurement (REM). We verified HAs that have gone through the fitting program using speech mapping REM; we then compared the outcome with word recognition scores (WRS) to evaluate functional gain. Subjects and Method Fifty-six patients of sensorineural hearing loss (81 ears) were enrolled in the study. In REM, if the gap between the target gain of HA and real ear aided response (REAR) was less than 10 dB SPL, fitting was considered successful. In speech audiometry, unaided maximum discrimination score (PB max), unaided WRS at 65 dB HL and aided WRS at 65 dB HL were measured. By comparing PB max and aided WRS at 65 dB HL, patients were sorted into best (n=15), good (n=57), and poorly (n=9) aided groups and analyzed for the successes of fitting. Fitting was deemed unsuccessful if REAR was ≥10 dB SPL lower than the target value of HA. @*Results@#The mean aided WRS at 65 dB HL of best, good and poorly aided groups were 85.6%, 77.3%, and 54.2%, respectively. There were statistically significant differences between all groups (p=0.019, 0.001, 0.002). The success rates of HA fitting showed significant differences at 0.5, 0.75, 1, 4 kHz of 55 dB SPL (p=0.023, 0.005, 0.003, 0.014), and at 4 kHz of 65 and 75 dB SPL (p=0.004, 0.001). The high WRS group showed sufficient gain at many frequencies. @*Conclusion@#Well fitted HAs can provide sufficient increase in speech intelligibility. Using the speech mapping REM is a great method to verify fitting of HA.
ABSTRACT
Background and Objectives@#Middle ear implants (MEI) have been reported to be an effective and safe alternative for the treatment of sensorineural hearing loss (SNHL) and conductive hearing loss (CHL). This study aimed to compare the functional outcomes between SNHL and CHL in terms of audiological gains.Subjects and Method The medical records of 14 consecutive SNHL and CHL patients who underwent MEI surgeries from 2015 to 2019 by a single surgeon were retrospectively reviewed. Audiological changes using hearing aids (HA) and MEI were compared. @*Results@#In SNHL, the mean unaided air-conduction pure tone audiometry (PTA), (57.7 dB HL) decreased significantly using HA and MEI (44.7 and 41.4 dB HL), but with no significant difference from each other. Unaided word recognition score (WRS) at 65 dB HL (45.1%) was significantly improved using HA and MEI (72.6% and 76.6%), with no significant difference. In CHL, the mean unaided air-conduction and bone-conduction PTA were 77.1 (57.5-93.8) and 44.1 (26.3-57.5) dB HL. Three patients could not use conventional HAs due to otorrhea and deformity of the external auditory canal by previous surgeries and 4 patients had used conventional HAs before MEI. Though both HA and vibrant soundbridge (VSB) showed improvement of hearing thresholds (32.0 and 48.8 dB HL) and WRS (80.0% and 94.9%), it was significant only when using VSB. There was no significant difference between HA and VSB. @*Conclusion@#MEI can be an effective treatment option for both SNHL and CHL patients, especially for those who suffered from problems using conventional HA.
ABSTRACT
Lymph node metastases of thyroid papillary carcinomas typically occur in the central and lateral neck lymph nodes. Metastasis to the retropharyngeal node is rare for this tumor type, especially when accompanied with airway obstruction. We treated one patient with retropharyngeal lymph node (RPLN) metastasis of thyroid papillary carcinoma with airway obstruction. The RPLN was successfully resected without complications via transcervical approach. Although the present case is rare, metastasis to the retropharyngeal nodes should be considered at the time of diagnosis and follow-up for thyroid papillary carcinoma. The dissection of thyroid papillary carcinoma metastases to the RPLN should be based on estimated prognosis, complaints, performance status, surgical skill, and complications.