Effect of Using N95 and Surgical Masks on Otoacoustic Emission in Cochlear Outer Hair Cells

INTRODUCTION

Distortion product otoacoustic emission (DPOAE) was measured to investigate the effect of mask use and type on oxygen saturation on cochlear function in health care professionals during the COVID-19 pandemic.

MATERIAL AND METHODS

Group 1 participants wore surgical masks; Group 2 participants wore N95 masks. Distortion product otoacoustic emission and oxygen saturation were measured in both groups before and after mask use.

RESULTS

Comparison of signal-to-noise ratio (SNR) values before and after surgical mask use in DPOAE measurements of group 1 revealed statistically significant difference in the right and left ears. Comparison of the SNR values in DPOAE measurements of group 2 before and after 8 hours of N95 mask use revealed statistically significant differences in the right ear at 988, 2963, 4444, and 8000 Hz and in the left ear at 8000 Hz.

CONCLUSION

We found that prolonged mask use may affect the outer hair cells in the cochlea, causing deterioration in DPOAE values.

Effects of Infertility on Voice in male patients

Purpose

In this study, we aimed to determine the differences in normospermic, oligospermic and azoospermic infertile men by performing voice analysis and to discuss this in the light of the literature.

Methods

71 male patients who applied to the urology clinic due to infertility and were then referred to us were included in the study. Hormone analysis and spermiogram were requested from the patients for routine infertility tests. Testosterone, Follicle stimulating hormone (FSH), Luteinizing hormone (LH), Prolactin levels of the patients were recorded. Age and spermiogram results were recorded. According to the spermiogram results, the patients were categorized as Group 1 (azoospermic), Group 2 (oligospermic), Group 3 (normospermic). Voice Handicap Index-10 Turkish version (VHI-10) was applied to the patients and the results were recorded.

Results

The age of the infertile patients ranged from 20 to 37. The mean age was 28.23. The distribution of the patients was 21 patients in Group 1, 40 patients in Group 2, and 10 patients in Group 3. The mean Testosterone level of the patients was 2.78; mean FSH level 12.14; mean LH level 7.26; mean Prolactin level was 8.1. The mean VHI-10 scores of the patients were 10.52. The fundamental frequency F0 Hz (mean pitch) values of the patients were 176,468; jitter % (frequency perturbation jitter) values average 0.25; shimmer % (amplitude perturbation shimmer) values average 2,322; HNR dB values averaged 24,862.

Conclusions

Testosterone is more effective on the voice, especially in male individuals.It would be more logical to think that many hormones, growth factors and local factors are effective instead of a single hormone.