Nonionic contrast media in gastrointestinal studies in newborns and small infants.

Since January 1983, 431 patients were examined by oral or rectal application of nonionic contrast medium for gastrointestinal studies. The contrast medium was uniformly well tolerated, even by severely ill preterm babies and infants. We present a review of our experience and a list of indications for the use of nonionic contrast media in gastrointestinal studies. In addition, the urinary iodine concentration of eight patients was examined after oral application of nonionic contrast medium in order to evaluate the resorption of the substance.