Abstract
Under normal flow conditions, the ureter transports urine in isolated boluses (Boyarski and Weinberg 1973, Durben and Gerlach 1979). Each bolus of urine is propelled by a local, moving contraction of the ureteral wall (Rose etal. 1973; Weinberg 1974; Constantinou and Hrynczuk 1976; Weinberg and Labay 1977). The electrical signal (EMG) which accompanies the mechanical activity can be measured and modelled (Constantinou et al. 1974; Golenhofen and Hannappel 1973; van Duyl et al. 1978). In this study we used pig ureters to demonstrate the propagation of injected fluid boluses by electrical stimulation in vitro. The propagation velocity of the contraction ring was calculated from the electrical signals measured at various locations along the ureter. Ureters were stimulated at various points in order to induce contractions running antegradely as well as retrogradely. The influence of an obstruction on the propagation process was investigated by inflating the balloon of a Swan-Ganz catheter in the ureter.
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References
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© 1985 Springer-Verlag Berlin Heidelberg
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van Mastrigt, R. (1985). The Propagation Velocity of Contractions of the Pig Ureter in Vitro. In: Lutzeyer, W., Hannappel, J. (eds) Urodynamics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70436-9_12
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DOI: https://doi.org/10.1007/978-3-642-70436-9_12
Publisher Name: Springer, Berlin, Heidelberg
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