The Effect of Sodium Thiosulfate Eardrops on Hearing Loss in Patients Who Receive Cisplatin Therapy

This is a pilot, randomized, self-controlled study of the effects of intratympanic sodium thiosulfate (STS) on the degree of hearing loss in patients receiving cisplatin therapy. Sodium thiosulfate is an inactive ingredient contained in sulfacetamide ophthalmic solution which is used routinely as an otic solution delivered to the middle ear space. The hypothesis of this study is that local administration of sodium thiosulfate (STS) will result in improved hearing compared to ears not receiving the study drug in patients receiving systemic cisplatin therapy.