Experimental study of transient cochlear ischemia as a cause of sudden deafness

Figure 30 Loss of inner and outer hair cells after single and double cochlear ischemia. Pretreatment with sublethal cochlear ischemia reduced inner hair cell (IHC) damage 7 d after lethal cochlear ischemia. In the double ischemia group (n = 12), the proregion of defects in IHCs was significantly lower than that in the single ischemia group (n = 16). On the other hand, there was no statistically significant difference in the amount of outer hair cell loss between the two groups.