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Uses and Limitations of Transcutaneous Bilirubin Measurement



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Mayo Study of TcB, cont.

Slide 14

June 2009

This two by two concordance table shows how well transcutaneous bilirubin was able to predict high-risk serum bilirubin values when both were plotted in the Bhutani nomogram according to postnatal age at the time of measurement.  The second row shows all infants with high-risk serum bilirubin values by the diazo method.  The transcutaneous measurement predicted high-risk serum values in 51 of 52 infants with a high risk serum bilirubin, for a sensitivity of 98%.  The first row of the table shows all infants with low-risk serum bilirubin values by the diazo method.  The transcutaneous method correctly predicted low risk in only 48 of 125 infants with low-risk serum values, for a specificity of only 38%.

Mayo Study of TcB, cont.

 


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