Özet:

INTRODUCTION: To find out the effect of systemic hypertension on 1) pure tone audiometry (PTA) 2) distortion product emissions (DPOAE) in adults. METHODS: This clinical controlled prospective study was conducted -with 60 patients evaluated between January 2011-December 2011 at Umraniye Education and Research Hospital Otolaryngology Clinic. Thirty subjects with systemic hypertension and 30 controls were included in the study. The patients were interrogated as for past history of hypertension, and all subjects underwent a physical exam including fundus examination, PTA and DPOAE for objective evaluation of systemic hypertension. RESULTS: Percentage of tinnitus in subjects with hypertension and in controls was 90 % and 40 %, respectively (p=0.001). Pure tone audiometry results revealed a significantly higher sensorineural hearing loss in all frequencies above 500 Hz in the hypertensive patients (p<0.05). In the right ear DPOAE assessments responses were elicited at 4000 in 80 % of hypertensive patients and 96.7 % of controls (p=0.103) and at 6000 Hz in 20 % of hypertensive patients and 96,7 % of controls (p=0.001), respectively. In the left ear, DPOAE assessments revealed responses at 4000 in 73.3 % of the hypertensive patients and 96,7 % of controls (p=0.026) and at 6000 Hz in 26.7 % of hypertensive patients and 93.3 % of controls (p=0.001), respectively. DISCUSSION AND CONCLUSION: Systemic hypertension induces hearing loss from 500 Hz on. This hearing loss wgtains significance from 4000 Hz. It also significantly decreases otoacoustic emissions at 4000 to 6000 Hz.

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