Long-term treatment with chlorthalidone reduces experimental hydrops but does not prevent the hearing loss.
Long-term treatment of guinea pigs with the diuretics chlorthalidone and acetazolamide, following the experimental obstruction of the endolymphatic duct, was assessed using chronically implanted round window cochlear electrodes. The diuretic chlorthalidone appeared to curb the progressive low-frequency sensitivity loss during the first 4 weeks following surgery, as compared with animals receiving the diuretic acetazolamide or no treatment. However, this apparent beneficial effect decreased after 4 weeks and was not apparent at 14 weeks post-induction. On the other hand, morphological control at the end of 14 weeks confirmed a marked reduction in hydrops in the chlorthalidone-treated animals. The data clearly demonstrate a dissociation between hydrops and the development of hearing loss and suggest that the augmenting endolymph volume is only one of several contributing factors to the deteriorating auditory function in experimental hydrops.[1]References
- Long-term treatment with chlorthalidone reduces experimental hydrops but does not prevent the hearing loss. Horner, K.C., Aurousseau, C., Erre, J.P., Cazals, Y. Acta Otolaryngol. (1989) [Pubmed]
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