[Double-blind comparative study of trimethroprim-sulphacetamide-polymyxin b and gentamicin in the treatment of otorrhoea (author's transl)].

A double-blind comparative study of the use of Garamycine (gentamicin) ear drops and TSP (trimethroprim-sulphacetamide-polomyxin B) ear drops in the treatment of 100 cases of otorrhoea due to external otitis, a recurrent otitis media accompanied by perforation of the drum, an infection of the mastoid cavity or a postoperative infection, provided evidence of the effectiveness of both medications. TSP ear drops gave positive results in 42 out of 50 cases treated, whilst for gentamicin aural solution results were positive for 46 out of 50 cases. Gentamicin gave a successful result in 5 of the 8 failures with TSP, whilst TSP cured the four original failures with gentamicin. There were no signs of ototoxicity, of excessive fungal proliferation nor of any local sensitivity to the ear drops. It would seem that these aural preparations are complementary, capable of resulting in the disappearance of the majority of bacterial agents responsible for pathogenic otorrhoea.