Correlation between Cochlear Blood Flow and Oxyganation

Abstract

Dynamic changes in six parameters namely, cochlear blood flow and muscular blood flow by laser Doppler flowmeter, perilymphatic and systemic arterial oxygen tension by polarography, systemic arterial carbon dioxide tension and pH by field effect transducer, against changes in mean systemic blood pressure were analysed. A negative correlation was noted between the systemic oxygen tension and cochlear oxygenation. Cochlear blood flow and oxygenation showed partial dissociation at the mean systemic blood pressure range of less than 80 mmHg.