SNHI seems to be the hearing damage most frequently found in RA patients, and it has been attributed to disease activity, older age and extra-articular involvement such as vasculitis.
7) reported the frequency of SNHI in RA patients to be higher than normal controls (36.
Another possible explanation is that thickening of the intima-media carotid arteries may affect the inner ear blood flow, especially the labyrinthine artery, leading to SNHI by the same mechanism mainly at high frequencies.
RA patients may develop autoimmune inner-ear disease due to SNHI.
Due to the cross sectional methodology of the study, we were unable to discriminate the impact of the variables across time in SNHI.