[Calcium antagonists and damage to the organ of Corti in acoustic trauma].

The protective effect of Ca2+ antagonists in acoustic trauma was evaluated by morphometric analysis of the guinea pig cochlea. Damage to the outer and inner hair cells was significantly reduced. Ca2+ antagonists may exert a beneficial influence on the cellular membrane of the sensory cell or on the cochlear vasculature if given in advance and in the early post-traumatic phase.