Microbiological diagnosis of suppurative-inflammatory processes of the E. N. T. organs and the maxillo-mandibulo-facial region under suspicion of anaerobic non-clostridial infection

The etiological role of non-sporulating anaerobic bacteria as causative agents of suppurative-inflammatory diseases (SID) of the maxillo-mandibulo-facial region and the E. N. T. organs as studied. Express diagnosis of anaerobic infection was carried out by means of gas-liquid chromatography. The species-specific composition of the microflora of the suppurative focus was investigated. It was established that only obligate anaerobes in monoculture or in association were isolated from patients with so-called "sterile" inoculations when strictly anaerobic bacteriological technique was used. The use of anaerobic bacteriological technique of investigation enlarged the spectrum of the microflora isolated from the suppurative focus from 5 to 26 species. Results of chromatographic and bacteriological examinations were compared; the main causes of obtaining false-positive and false-negative results of chromatography were analysed. Statistical processing using factor analysis has shown that the information power of chromatographic examination of the metabolites of anaerobic bacteria is higher in comparison with the main clinical-laboratory indices, but statistical processing using cluster analysis and correlation analysis has revealed that an index like metabolic activity reflects the degree of real participation of anaerobic microflora in the development of the pathological process, and can be used in the clinic for the evaluation of the degree of severity of the course of the SID and of the effectiveness of treatment.