[Determination of exocrine pancreatic function in childhood with the pancreozymin-secretin test].

Pancreatic function can only be determined exactly via the pancreozymin-secretin test. We conducted this test in two versions: (1) under conditions of continuous perfusion with the possibility of volume correction and (2) as a simple tubing. We compared the results of 86 tubings with the results of 87 examinations under perfusion. For that purpose all patients were classified into four groups: group a) with 46 and 10 examinations, respectively, in patients suffering from cholestasis in early infancy, group b) with 7 and 12 examinations, respectively, in older patients with liver diseases, group c) with 8 and 17 examinations, respectively, in patients suffering from cystic fibrosis or Shwachman's syndrome and group d) with 25 and 48 examinations, respectively, in children with normal pancreatic function. Both examination methods nearly identical mean values of the enzyme activities in all four patient groups. However, mean variations were found to be higher in case of tubing. Therefore the lower limits (x - 2s) of this test were defined at a lower level than those of the tests under perfusion.