Brainstem evoked potential in newly diagnosed patients of subclinical hypothyroidism

Kirti Sharma; Joshil Kumar Behera; Naresh Kumar; Sushma Sood; Harnam Singh Madan; Sibadatta Das

doi:10.4103/1947-2714.156006

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ORIGINAL ARTICLE

Year : 2015 | Volume : 7 | Issue : 4 | Page : 131-134

Brainstem evoked potential in newly diagnosed patients of subclinical hypothyroidism

Kirti Sharma¹, Joshil Kumar Behera², Naresh Kumar¹, Sushma Sood³, Harnam Singh Madan⁴, Sibadatta Das¹
¹ Department of Physiology, Shaheed Hasan Khan Mewati (SHKM) Government Medical College, Nalhar, Uttarkhand, India
² Department of Physiology, Government Medical College (GMC), Srinagar, Pauri Garhwal, India
³ Department of Physiology, Post Graduate Institute of Medical Sciences (PGIMS), Rohtak, Haryana, India
⁴ Department of Orthopedics, Shaheed Hasan Khan Mewati (SHKM) Government Medical College, Nalhar, Uttarkhand, India

Correspondence Address:
Kirti Sharma
Department of Physiology, Shaheed Hasan Khan Mewati (SHKM) Government Medical College, Nalhar - 122 107, Nuh, Mewat, Haryana
India

Source of Support: None, Conflict of Interest: None

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DOI: 10.4103/1947-2714.156006

Background: Hypothyroidism is known to be associated with impairment of hearing. The hearing impairment may be conductive, sensorineural, or mixed. Aims: The aim is to assess the auditory pathway by brainstem auditory evoked potentials (BAEPs) in newly diagnosed patients of subclinical hypothyroidism and healthy sex- and age-matched controls. Materials and Methods: The study included 25 healthy sex- and age-matched controls (Group I) and 25 patients of newly diagnosed subclinical hypothyroidism (Group II). The recording was taken by using RMS EMG EP MK2 equipment. The unpaired Student's t-test was used and a P value <0.05 was considered significant. Results: Wave V of right ear BAEP in group II was prolonged (6 ± 0.62 ms) compared to group I (5.49 ± 0.26 ms), and wave V of left ear BAEP in group II was prolonged (5.84 ± 0.57 ms) compared to group I (5.47 ± 0.35 ms). There was no significant coefficient of correlation between wave V and inter-peak latency (IPL) I-V compared to thyroid-stimulating hormone (TSH) levels of both the ears. Conclusion: The prolongation of wave V in BAEPs of both ears suggests that the central auditory pathway is affected significantly in subclinical hypothyroid patients.

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