Determination of newborn jaundice level by transcutaneous bilirubin measurement

2018 ◽  
Author(s):  
Yunus Karamavus ◽  
Mehmed Ozkan
Keyword(s):  
Transcutaneous Bilirubin ◽  
Newborn Jaundice

Evaluation of the Minolta Bilirubin Meter as a Screening Device in White and Black Infants

PEDIATRICS ◽  
1982 ◽  
Vol 69 (1) ◽  
pp. 107-109 ◽  
Author(s):  
Robert E. Hannemann ◽  
Richard L. Schreiner ◽  
David P. DeWitt ◽  
Steven A. Norris ◽  
Melvin R. Glick
Keyword(s):  
Premature Infants ◽  
Serum Bilirubin ◽  
Full Term ◽  
Blood Sampling ◽  
Published Data ◽  
Bilirubin Concentration ◽  
Transcutaneous Bilirubin ◽  
Screening Device ◽  
Serum Bilirubin Concentration

The only currently available method for the determination of the serum bilirubin concentration is blood sampling followed by analysis in the laboratory. Yamanouchi et al1 have presented data concerning a two-wavelength (460, 555 nm) transcutaneous bilirubin meter (Minolta Camera Company, Ltd). They found a significant correlation with serum bilirubin concentrations of 0 to 20 mg/100 ml in full-term Oriental infants. However, there are no published data concerning the use of the instrument in white or black full-term or premature infants. The purpose of this study was to evaluate the Minolta transcutaneous bilirubin meter in these populations. MATERIALS AND METHODS During a two-month period, measurements were taken with the Minolta transcutaneous bilirubin meter on any infant for whom a serum bilirubin determination had been ordered.

Bilirubin monitoring – future prospects

2021 ◽  
Vol 56 (4) ◽  
pp. 175-180
Author(s):  
Joanna Berska ◽  
Jolanta Bugajska ◽  
Krystyna Sztefko
Keyword(s):  
Bilirubin Level ◽  
Total Bilirubin ◽  
Point Of Care ◽  
Total Bilirubin Level ◽  
Total Serum ◽  
Bilirubin Concentration ◽  
Transcutaneous Bilirubin ◽  
Total Bilirubin Concentration ◽  
Life Threatening

Monitoring of bilirubin concentration is essential during early neonatal life. According to the American Academy of Pediatrics Clinical Practice Guideline, the total serum bilirubin or transcutaneous bilirubin level should be measured in each infant in the first 24 hours of life. The concentration of bilirubin has been measured for 150 years. During that time the analytical methods for its determination have been significantly improved, the nomenclature of bilirubin has been also unified, but it is still unknown what concentration of bilirubin cause a life-threatening encephalopathy in the newborn. Under the current recommendations, clinical decisions to introduce phototherapy in the treatment of newborns’ hyperbilirubinemia are based on total bilirubin concentration, which is determined on biochemical analyzers and point of care testing systems. However, it is not always possible to predict encephalopathy based on the total bilirubin level. Probably in the future, as the availability of routine methods for the determination of unconjugated, free bilirubin becomes more available, measurement of “free” bilirubin will improve risk assessment for bilirubin neurotoxicity.

Comparison of Two Transcutaneous Bilirubinometers in Term and Near-Term Neonates

2014 ◽  
Vol 33 (3) ◽  
pp. 138-142 ◽  
Author(s):  
Serdar Umit Sarici ◽  
Esad Köklü ◽  
Oguzhan Babacan
Keyword(s):  
Newborn Infants ◽  
Outcome Variable ◽  
Term Neonates ◽  
Transcutaneous Bilirubin ◽  
New Device ◽  
Term Newborn ◽  
Main Outcome Variable ◽  
Near Term ◽  
Mean Differences

Purpose: Determination of bilirubin levels is performed for many newborns in the first days of life, and several different transcutaneous bilirubinometers are available. We aimed to determine whether transcutaneous bilirubin measurement, as performed using Jaundice Detector JH20-1C, a new device, correlates with Minolta/Hill-Rom Air-Shields Transcutaneous Jaundice Meter model JM-103.Design and Sample: The study was performed on term or near-term newborn infants who underwent transcutaneous bilirubin measurements as part of their normal care. The study group consisted of 585 newborn infants with gestational ages ranging from 35 to 42 weeks, coming from an uneventful pregnancy. In this prospective study, bilirubin concentrations were determined with two different transcutaneous bilirubinometers.Main Outcome Variable: In 585 infants, the correlation coefficient for Jaundice Detector JH20-1C versus Minolta Air-Shields Jaundice Meter model JM-103 was .965 (p < .0001). The mean (± standard deviation) difference between the Jaundice Detector JH20-1C versus Minolta Air-Shields Jaundice Meter model JM-103 was 0.26 ± 0.95 mg/dL. Results showed the Jaundice Detector JH20-1C to have an acceptable level of intradevice imprecision (r = .978, p < .0001, mean differences .0158 ± .871 mg/dL).Results: Jaundice Detector JH20-1C showed the good performances of intradevice and interdevice imprecision in comparison with Minolta/Hill-Rom Air-Shields Transcutaneous Jaundice Meter model JM-103. Jaundice Detector JH20-1C may be suitable for screening term or near-term newborn infants for jaundice in the well-baby nursery or maternity ward.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

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