Influence of periodicity of fluorographic examination of population on the frequency of occurrence of bacillary excretion and destructive forms of tuberculosis in persons with the firstly diagnosed disease

Aim: to establish the structure of the relationship between the change in regulations of fluorographic regimen and frequency of occurrence of bacillary excretion (MBT+), destructive forms of the disease in patients with newly diagnosed tuberculosis. Materials and Methods. 1,428 cases with newly diagnosed tuberculosis — a form №089u-tub, as well as other types of reports of the Saratov region have been analyzed. Statistical analysis has been performed by computer software «Microsoft Excel» and «Statistica-6.0». Analysis of the data by the test of Kolmogorov — Spirin has showed normality of their distribution. Confidence index was assessed by Student's. Differences were assessed as valid if the probability was 95% (P менее 0.05) and higher. Results. The group with the presence of medical and biological risk factors for tuberculosis, for one reason or another do not pass a fluorographic examination in the next 3-5 years, the number of patients with the collapse of the lung tissue was 45.2%, the MBT+ —45.7%. In cases where the lastfluorographic examination performed five years ago, the number of patients with the collapse increased to 58.8% and from the MBT+ — up to 64.3% (P менее 0.05). A similar trend was observed in the groups of patients with other risks for tuberculosis. Conclusion. Parameters of a regression between the periodicity of fluorographic examination and frequency of decay occurrence and bacillary excretion in patients with newly diagnosed pulmonary tuberculosis have been defined. It has been established that an increase in the multiplicity of fluorographic examination among those with no risk factors for ТВ to 1 time per year reduces the incidence of smear-10.1% of patients with the collapse of the lung tissue by 7.3%.