NOISE-INDUCED HEARING LOSS (NIHL) AND ITS CORRELATION WITH AUDIOMETRIC OBSERVATIONS IN HEAVY VEHICLE OPERATORS SUFFERING WITH METABOLIC DISORDERS

M. YADAV¹*, K.S. YADAV², A. NETTERWALA³, B. KHAN⁴, N.S. DESAI^5
1D.Y. Patil University's School of Ayurveda, Navi Mumbai - 400 706, MS, India.
²D.Y. Patil University's School of Medicine, Navi Mumbai - 400 706, MS, India.
³D.Y. Patil University's School of Medicine, Navi Mumbai - 400 706, MS, India.
⁴D.Y. Patil University's School of Medicine, Navi Mumbai - 400 706, MS, India.
⁵Amity University's, Bhatan, Somatane, Raigad - 410 206, MS, India.
* Corresponding Author : meena_ksy@rediffmail.com

Received : 06-05-2015     Accepted : 21-05-2015     Published : 01-10-2015
Volume : 6     Issue : 1       Pages : 315 - 320
Int J Med Clin Res 6.1 (2015):315-320

Keywords : NIHL, audiometric observations, metabolic disorder
Academic Editor : Dr Vijay Ukhalkar, Dr Nisar Khan
Conflict of Interest : None declared
Acknowledgements/Funding : Acknowledged to all subjects participated in this study. Special thanks to Medical Director, D Y Patil University & HOD, ENT, School of Medicine, for providing free audiometric examination.

Type II diabetic Mellitus (DM) is a chronic metabolic disease. In 2014, 9% of adults 18 years and older had diabetes. In 2012, diabetes was the direct cause of 1.5 million deaths. More than 80% of diabetes deaths occur in low- and middle-income countries. In India, about 5% populations suffer from diabetes or related complication. DM chronic auditory complications may include spiral ganglia atrophy, degeneration of the vestibulocochlear nerve myelin sheath, reduction of the number of spiral lamina nerve fibers, and thickening of the capillary walls of the stria vascular is and small arteries which lead to hearing loss. Aim and Objective: This study aims to know the incidence of hearing loss and to establish correlation with clinical parameters & personal hygiene of individuals. Materials & Methods: Sixty-four subjects were diagnosed as type II recruited in this study are heavy vehicle drivers & helpers. Noise-Induced Hearing Loss (NIHL) analysis study featuring hearing impairment in all individuals has been done after interviewed by various sets of questions related to listening ability. All subjects underwent a physical examination, blood investigations to confirm metabolic disorders & audiometric examination to evaluate hearing loss. Results & Conclusion: Conductive hearing loss is higher amongst the all three types as compared to sensory neural hearing loss & mixed hearing loss. There is no definite pattern of audiometric results; it could be variation in pre-assessment preparation of individuals subject. Certain medications used may cause damage of hair cells in the inner ear that may be the reason of higher frequency among the study subjects affected by sensory neural hearing loss compared with other two types.