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Research: Dosage of Morphine for ill Newborns Still too Imprecise
Date:12/22/2009

LEIDEN, The Netherlands, December 22 /PRNewswire/ -- Dosage recommendations for newborns being cared for in an intensive care unit will in the future most likely be based on more individual characteristics than just body weight. This is the result of a study conducted by the Dutch Top Institute Pharma in which Leiden University (Prof M. Danhof) and the Rotterdam Erasmus Medical Centre/Sophia Children's Hospital (Prof D. Tibboel) are represented.

Catherijne Knibbe, clinical pharmacologist from the Leiden/Amsterdam Centre for Drug Research of Leiden University: "For morphine the preliminary study results show that for example a quarter of the current standard dose is sufficient for premature babies. The Erasmus MC/Sophia Children's Hospital had already noted in practice that some babies experienced withdrawal symptoms after long-term treatment with morphine. Now research has shown that the required amount of morphine can vary greatly per baby."

The dosage for children is often adjusted solely according to body weight, but that now seems to be insufficient. Knibbe said about the common used sedative midazolam: "A healthy child may be prescribed far more midazolam than for example a child with the same body weight lying in the intensive care unit with a severe infection. This study provides guidelines for arriving at a dosage recommendation that is adjusted better to the individual child. This is an enormous advance." According to Knibbe, this information is very important for doctors, as well as for pharmaceutical companies, which have been required for the past two years to conform to stricter European legislation for medicinal products for children.

This study required an intensive collaboration between clinical pharmacologists and pediatricians from the various institutes using modern methods like PK/PD modeling. Complex computer models can determine the correct dosage from small quantities of blood,
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SOURCE Top Institute Pharma
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