title: [Flow technic analysis of the pyelocalyceal system with regard to urinary calculi formation. I. Theoretical considerations].
abstract: The formation of urinary calculi is usually interpreted chemico-crystallographically. However, hydrodynamic examinations, both theoretical and experimental, show that unfavourable flow conditions in the pelvi-calyceal system may allow pathogens to remain in the appropriate zones for the length of time necessary for growth. Some light is shed on a new factor which has so far been ignored. Part I deals with theoretical considerations, while part II gives information on preliminary experiments using statistical models.
mesh_terms: D006801:Humans; D007668:Kidney / Q000033:anatomy & histology; D007682:Kidney Pelvis / Q000503:physiopathology*; D008954:Models, Biological; D014545:Urinary Calculi / Q000209:etiology* / Q000378:metabolism / Q000503:physiopathology; D014553:Urinary Tract Physiological Phenomena
vernacular_title: Strömungstechnische Analyse des Pyelonkelchsystems hinsichtlich der Harnsteingenese. I. Theoretische Aussagen.