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Article: Blood flow measurements in the ears of patients receiving cochlear implants
- Article from:
- The Annals of Otology, Rhinology & Laryngology
- Article date:
- November 1, 2002
- Author:
CopyrightCopyright Annals Publishing Company Nov 2002. Provided by ProQuest LLC. (Hide copyright information)
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We measured cochlear blood flow in 12 patients who received cochlear implants, using a laser-Doppler probe with an outer diameter of 0.8 mm. The subjects had congenital deafness, idiopathic progressive sensorineural hearing loss, Waardenburg's syndrome, narrow internal auditory canal, or sudden deafness. Putting the probe tip to the site of drilling for cochlear implantation, we measured blood flow before, during, and after the cochlear bony wall was opened. The laser-Doppler output was confirmed even after the tip of the probe was inserted into the perilymphatic space in all cases. Our results revealed that blood flow was maintained in all cochleas, although there was a probability of ...