Abstract
Aminoglycosides are commonly used in the treatment of multidrug-resistant tuberculosis (MDR-TB). Their use can cause ototoxicity with irreversible hearing loss. The aim of this study was to determine the incidence and to identify factors associated to kanamycin-induced ototoxicity during MDR-TB treatment in Yaounde. The records of patients hospitalized in the pulmonology department of the Jamot Hospital of Yaounde between May 2008 and July 2015 (7 years) for treatment of MDR-TB with regimens containing kanamycin were analyzed. Logistic regression was used to identify for factors associated with ototoxicity during this treatment. Of the 79 patients included, 60.7% were male and their median age (25th-75th percentile) was 31 (25-43) years. Eighteen (22.8%) patients had HIV infection. During treatment, the incidence of kanamycin-induced ototoxicity [95% confidence interval (95% CI)] was 36.7 (26.9-47.7) %. Factors independently associated with this ototoxicity [odds ratio (95% CI)] during MDR-TB treatment were age>40 years [13.47 (3.66-49.49)] and a body mass index<18.5kg/m2 [4.58 (1.36-15.44)]. The incidence of kanamycin-induced ototoxicity during MDR-TB treatment is relatively high. Taking these factors into consideration at the initiation of MDR-TB treatment would allow to reduce the occurrence of irreversible functional impairment induced by the treatment of MDR-TB.
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