[Qualitative and quantitative researches into bacterial flora of respiratory apparatus (author's transl)]. / Indagini qualitative e quantitative sulla flora batterica dell'apparato respiratorio

The first group of data illustrated in this research concern the isolation's frequencies of bacterial strains from 7000 samples of respiratory materials examinated in two years, 1973 and 1974, by two different techniques. Significant differences were observed in the isolation's percentage of various bacterial strains; these differences, at least partly, can be attributed at the different techniques employed in two years. The second group of data is represented by results of bacterial quantitation performed in 100 samples of purulent sputum, with respectives clinical notes unknown. Potentially pathogenous strains in pure culture and at a concentration of 10(7) or higher were isolated only in 16 samples of sputum in the other samples normal bacterial flora was isolated alone or associated with potentially pathogenous strains.

[Antimicrobical resistance of bacterial strains isolated in specimens of the respiratory tract (author's transl)]. / Antibiotico-resistenza di stipiti batterici isolati da materiali dell'apparato respiratorio

More than 4,000 susceptibility tests of antimicrobical agents performed in two years with six groups of microorganisms: 1) Staphylococcus, 2) Escherichia coli, 3) Proteus, 4) Enterobacter and Klebsiella, 5) Citrobacter, 6) Pseudomonas aeruginosa, have been compared. Percentages of antimicrobical resistance of every group are here related and statistically compared to discover significant susceptibility variations of bacteria isolated in 1973 and 1974.

[Comparative analysis between qualitative and quantitative features of orofaringeal and tracheo-bronchial bacterial flora in normal subject (author's transl)]. / Analisi comparativa tra le caratteristiche qualitative e quantitative della flora batterica dell'orofaringe e dell'albero tracheobronchiale del soggetto normale

In 28 subjects surely without tracheo-bronchial phlogosis it had been observed that the trachea and the bronchi are mostly sterile, only rarely there is a normal bacterial flora. In the mouth and in the pharynx there is instead, almost always, normal bacterial flora and only exceptionally potentially pathogenous strains at a concentration inferior to 10(7).