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  • Title: [Entropy in the assessment of diagnostic importance of changes in urine].
    Author: Tepavcević D, Tepavcević P.
    Journal: Med Pregl; 1997; 50(9-10):345-8. PubMed ID: 9471527.
    Abstract:
    Entropy, as the measure of that part of the heat or energy of a system which is not available to perform work, is suitable for application in numerous medical investigations. It is determined in regard to two states of the system: states above and below the examined level of studied parameters. By application of entropy function in completed examinations sometimes it is possible to gain additional conclusions or to confirm already existing. This method of entropy determination was performed in final quantitative bacteriological and cytological examinations of samples gained from the first morning urine of 314 persons without symptoms or signs of urinary tract infection, 422 patients with symptoms and signs of bacterial infection and 31 deceased persons with autopsy confirmed pyelonephritis. Gathered results confirm the diagnostic and prognostic significance of quantitative bacteriological and cytological urine examination. However, by examination of these findings in patients with pyelonephritis, as well as the nature of bacteria, it can be concluded that the lowest of bacteriuria is between 10(3) and 10(4) in 1 ml of urine.
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