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Article
June 1982

Nature of the Endocochlear dc Potential in Kanamycin-Poisoned Guinea Pigs

Author Affiliations

From the Department of Otorhinolaryngology and Human Communication, University of Pennsylvania School of Medicine, Philadelphia.

Arch Otolaryngol. 1982;108(6):334-338. doi:10.1001/archotol.1982.00790540006002
Abstract

• The endocochlear dc potential (EP) was measured in normal guinea pigs and in a group poisoned with kanamycin sulfate for 60 minutes after the administration of furosemide intravenously (IV) or by perfusion into the scala media or the scala tympani. The EP decreased rapidly and developed a large negative potential after IV administration of furosemide, but the EP decreased more slowly and did not develop a negative potential in kanamycin-poisoned animals. With perfusion of the scala media, the EP declined slowly and did not develop a large negative potential in either group. With perfusion of the scala tympani, the EP declined slowly in the kanamycin-poisoned animals and did not develop a large negative potential, while in the normal animals the EP declined rapidly and developed a large negative potential.

(Arch Otolaryngol 1982;108:334-338)

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