[The relationship between high jugular bulb and tinnitus and hearing disorder]

Objective:To investigate the relationship between high jugular bulb and tinnitus and hearing disorder. Method:Forty-nine inpatient patients with hearing disorder were selected as the case group,and 50 cases as the control group,two groups of patients conducted temporal CT, audiogram to find out the patients who had hearing disorder,and then acoustic immittance, DPOAE, ABR,genetic screening for deafness and tinnitus questionnaire were conducted to the patients with hearing disorder. Result:Sixteen cases of these 99 patients had high jugular bulb,the total incidence was 16.16%, 14 cases in the case group had high jugular bulb, the incidence was 28.57%,only 2 cases in the control group, the incidence was 4.00%, there was significant difference(χ²=11.027，P<0.01)between two groups.For the cases group, 8 cases(57.14%) had hearing loss in the high frequencies, 4 cases(28.57%) in the low frequencies,2 cases(14.29%) in all frequencies；all of these 14 cases with high jugular bulb also had different degrees of tinnitus,12 of which had pulsatile tinnitus(85.71%), vascular pulsatile tinnitus was most common type,2 of which had non pulsatile tinnitus(14.29%).Four common deafness genes GJB2, SLC26A4, mtDNA12srRNA and GJB3 9 mutation screening tests showed no positive mutation in both groups. Conclusion:High jugular bulb has higher incidence in patients with hearing disorder,which may be a risk factor for hearing disorder.Attention should be paid to the influence of high jugular bulb in clinical diagnosis and treatment of hearing disorder.