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Proefschrift binnenwerk Manon Ernst_DEF.indd

C H A P T E R   3   Abstract   To   investigate   whether   short   term   changes   in   body   composition   as   a   result   of   growth  hormone  therapy  could  be  used  to  predict  its  growth  effect  after  one  year  in   children  with  growth  hormone  deficiency  (GHD)  and  children  born  small  for  gesta-­‐ tional  age  (SGA).       88   GHD   children   and   99   SGA   children   who   started   treatment   with   recombinant   human  growth  hormone  (rhGH)  were  included.  Total  body  water  (TBW)  and  height   were  measured.  After  one  year  patients  were  divided  into  adequate  and  inadequate   responders.     In   GHD   and   SGA   children   a   sensitivity   of   87%   and   53%   resp.   and   a   specificity   of   58%   and   83%   resp.   was   found.   The   positive   predictive   values   for   GHD   and   SGA   children  are  73%  and  90%  resp.  The  negative  predictive  values  are  75%  and  32%   resp.     In  conclusion:  Changes  in  body  composition  data  measured  by  TBW  are  a  valuable   tool  to  correctly  predict  75%  of  the  GHD  children  and  are  only  useful  in  SGA  chil-­‐ dren  when  the  change  in  TBW  is  above  the  cut  off  value  of  0.7  l/m2.           44    


Proefschrift binnenwerk Manon Ernst_DEF.indd
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