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Year : 2017  |  Volume : 23  |  Issue : 2  |  Page : 113-116

Effect of duration of diabetes mellitus on hearing threshold among type 2 diabetics

1 Department of ENT, Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
2 Department of Internal Medicine, Endocrine Unit, Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria

Correspondence Address:
Stephen Semen Yikawe
Department of ENT, Usmanu Danfodiyo University Teaching Hospital, Sokoto
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/indianjotol.INDIANJOTOL_40_17

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Background: Diabetes mellitus (DM) is a syndrome of chronic hyperglycemia due to relative insulin deficiency or resistance. The risk of complications of diabetes has been observed to increase as a function of the duration of hyperglycemia. Objective: The objective of this study is to determine the effect of duration of DM on hearing thresholds among type 2 diabetics. Methodology: This was a cross-sectional descriptive study conducted between October 2015 and May 2016 in Usmanu Danfodiyo University Teaching Hospital Sokoto among type 2 diabetic patients attending the Endocrine Clinic of the hospital. Patients had their blood sugar and hearing thresholds measured. Results: A total of 170 type 2 diabetics were recruited into the study, out of which 98 (57.6%) were females and 72 (42.4%) were males. The mean age was 46.49±10.02 years. One hundred and twenty-two (71.8%) had elevated hearing thresholds. The mean duration of diabetes among participants was 7.81±5.34 years, with durations ranging from <1 year to 30 years. The mean pure tone average increased with increase in duration of diabetes (P < 0.001). Simple linear regression showed that increase in duration of diabetes was positively related with hearing threshold (P < 0.0001). For every year increase in duration of type 2 DM, a 1.036 dB HL increase in pure tone average is to be expected. Conclusion: This study demonstrated a relationship between duration of diabetes and hearing threshold. It has shown that as the duration of hyperglycemia increased, the hearing threshold among participants also increased.

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