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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    term Chinese infants 202 who had not received any treatment and 57 who were receiving phototherapy The transcutaneous bilirubin index correlated well with the serum bilirubin level SB of the untreated infants and the coefficient of correlation was slightly higher for TcB readings obtained over the mid sternal area r 0 91 P less than 0 001 than those over the forehead r 0 85 P less than 0 001

    Original URL path: http://www.clinlab.ru/tm/bilirub/29.%20Fok.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    transcutaneous bilirubin measurements with serum bilirubin concentrations is not good enough to allow for accurate prediction of the serum values To impose the jaundice meter s potential clinical usefulness we evaluated 344 paired jaundice meter serum bilirubin measurements in 125 infants using new guidelines from the marketing company which were designed to identify which infants require serum bilirubin determinations rather than to predict the actual bilirubin values Use of the

    Original URL path: http://www.clinlab.ru/tm/bilirub/31.%20Goldman.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    normal patterns which have to be taken into account when applying this method to detect transcutaneous bilirubin and some physiopathological conditions such as hyperbilirubinemia anemia plethora and hormonal disturbances Measurements of the reflectance were taken at the forehead the internal and external aspects of the arm the thorax and the gluteus with blue green and amber tristimulus filters With all filters the least pigmented zone was the thorax and the

    Original URL path: http://www.clinlab.ru/tm/bilirub/32.%20Grande.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    study are to evaluate the method on a larger sample population with special attention to natural skin pigmentation effects and the development of a physical model of the tissue to explain the relationship between serum bilrubin concentration and skin reflectance Reflectance spectra 380 800 nm and concurrent serum bilirubin measurements were taken on a sample population of 58 white and 45 full term black infants 1 3 days of age Multiple linear regression analysis comprised of six wavelengths gave a correlation coefficient r 0 831 for the white infant group For the black infant group a five wavelength analysis provided r 0 877 with the standard error of estimate being 1 46 mg 100 ml for both groups The model for establishing a physical basis for the relationship shows that a transformed normalized Kubelka Monk function xi 460 510 420 is linearly related to serum bilrubin concentration This function is determined from the spectral reflectance values at three wavelengths 420 460 and 510 nm The wavelength combination is such that effects due to hemoglobin and melanin pigments are minimized Regression analysis showed that r 0 778 and r 0 865 for the white and black infant groups respectively with standard

    Original URL path: http://www.clinlab.ru/tm/bilirub/Hannemann.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    was evaluated in 43 white infants eight black infants and in nine white infants treated with phototherapy The reproducibility of the instruments was determined after trials consisting of both five and 100 repetitions Among the infants not being treated with phototherapy TcB index and serum bilirubin concentration correlated at 0 90 level in both white and black infants Phototherapy reduced the accuracy of the TcB and at the present time

    Original URL path: http://www.clinlab.ru/tm/bilirub/34.%20Hegyi.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    that of the forehead TcB ratio Four surface regions were identified placed in the following sequence with respect to decreasing TcB ratio values 1 forehead and sternum 2 elbow upper part of the back and upper part of the abdomen 3 lower part of the back and knee and 4 palm and sole To examine the relationship of the skin region of different serum bilirubin levels a model was created

    Original URL path: http://www.clinlab.ru/tm/bilirub/35.%20Hegyi.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    patch 2 5 cm in diameter covered the skin and served as a source for TcB control values Simultaneous TcB measurements were obtained from exposed and patched areas every 15 min during 4 h of phototherapy After the start of phototherapy TcB index obtained from patched skin did not change during the course of treatment Data from exposed skin showed that the initial rate of TcB index fall during the

    Original URL path: http://www.clinlab.ru/tm/bilirub/37.%20Hegyi.htm (2014-12-29)
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  • Abstracts - Problem of Transcutaneous Bilirubinometry
    to challenge physicians Clinical evaluation and treatment have evolved well established principles over the past decade This review examines neonatal bilirubin metabolism and focuses on a recently developed clinical diagnostic tool the transcutaneous bilirubinometer In spite of some limitations the transcutaneous bilirubinometer can be best applied as a screening tool to identify healthy full term infants who require serum bilirubin determination With proper application this device can eliminate most invasive

    Original URL path: http://www.clinlab.ru/tm/bilirub/38.%20Hegyi.htm (2014-12-29)
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