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  • Title: [The effect of upper urinary tract interior drainage on urodynamics and contractile function of the ureteral wall].
    Author: Mudraia IS, Kirpatovskiĭ VI, Martov AG, Kudriavtsev IuV, Makarova TI.
    Journal: Biull Eksp Biol Med; 1993 Feb; 115(2):144-7. PubMed ID: 8043788.
    Abstract:
    S-stents were introduced to the upper urinary tracts of experimental dogs on a period from 1 week to 11 months. It was found mild ureter dilation, the increased ureter pressure, refluxes along the upper urinary tract, the lowered flow resistance during perfusion and diuretic loads. Isolated ureter wall fragments demonstrated the diminished contractility in vitro, and the mode of their contractile force adrenergic regulation was modified. The reduced ureter pressure during large flows after indwelling S-stents to the ureters may be the factor that facilitated the renal and ureter stones removing but the decreased contractility and ureter refluxes emphasized that the period of stent implantation to the upper urinary tracts must be pathogenetically and clinically evident.
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