Article: Disturbed urinary transport in the pelvi-calyceal system in calcium-oxalate stone patients

This study is intended to elucidate the process of urinary transport through the pelvi-calyceal system (PCS). PCS-motility of a total of 28 PCS was qualitatively and quantitatively determined in 9 stone patients and 14 control persons by examination of contrast medium excretion. From X-ray videograms recorded by means of Siemens urography, four different urinary transport types could be distinguished as well as the duration of the contraction periods and the intervals between the PCS-contractions. In stone patients physiological types of urinary transport are less common (33%) than in control subjects (81.25%). In stone patients the PCS is often characterized by reduced or even absent motility. Calyceal reflux is usually found in the systolic phase of PCS-contractions, which may apparently be regarded as a physiological process.

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Disturbed Urinary Transport in the Pelvi-calyceal System in Calcium-oxalate Stone Patients