La Peritonitis Infecciosa Felina (PIF) es causada por un coronavirus que ocasiona una enfermedad letal en los gatos, la cual hasta el momento no tiene un tratamiento curativo. Se describen dos casos clínicos: un macho Siamés de 6 meses con apatía y anorexia y una hembra de 19 meses de pelo corto que presentó aborto y decaimiento. Ambos pacientes presentaron de leve a severa ascitis con un líquido peritoneal amarillento y proteínico compatible con PIF fase húmeda. A la necropsia se encontró ascitis y se observaron masas gelatinoides de fibrina adheridas a la serosa de hígado, bazo, pericardio, intestino y mesenterio. La histopatología mostró copioso exudado inflamatorio mixto compuesto por hilos de fibrina entremezclados con neutrófilos en diversos grados de degeneración y células plasmáticas, acompañado de severa vasculitis con hinchazón citoplasmática de las células endoteliales y efusión de líquido proteínico acidófilo.

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The presenters studied, by means of otoacoustic emissions tests, 32 individuals having tinnitus and pure tone thresholds equal or below 25dB in the 500 to 8000Hz frequency interval; they were compared with 37 control individuals with normal hearing and no tinnitus. The age ranged from 20 to 45 years in both groups. Transient otoacoustic emissions (TOAE) and distortion product otoacoustic emissions (DPOAE) were studied. The data were compared between the groups by Main-Whitney test and differences were considered statistically significant when the p value was less than 0.05. RESULTS: The DPOAE were abnormal in 68,4% of the tinnitus group and most abnormalities were found in 3000Hz and 4000Hz (pϽ0.05). The amplitude of the signal and the amplitude/noise ratio in all frequencies were smaller in the tinnitus group than in the control group (pϽ0.05). The transient emissions were abnormal in 70.2% of the study group (pϽ0.001) and most abnormalities were found in 3000 and 4000 Hz frequencies. Reproducibility and signal/noise ratio were significantly smaller in all frequencies (pϽ0.05) in the tinnitus group, except in 1500 Hz. CONCLUSIONS: These results suggest reduction of activity of outer hair cells in the tinnitus group. The team recommends the inclusion of otoacoustic emissions tests for all patients with tinnitus and normal audiometry.