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Transmural Pressure of the Urinary Bladder Wall

1974; Wiley; Volume: 92; Issue: 4 Linguagem: Inglês

10.1111/j.1748-1716.1974.tb05769.x

1365-201X

Per Bjerle,

Bladder and Urothelial Cancer Treatments

Abstract Intragastric, perivesical and intravesical pressures were registered during slow filling of the urinary bladder in nine healthy men in the supine and sitting positions. Intragastric pressure was fairly constant in both positions, but intravesical pressure rose and there was also a slight rise of perivesical pressure. In both body positions transmural pressure, i.e. the pressure difference between the inside and the outside of the tbladder, rose during bladder filling. In both body positions at bladder volumes ^ 300 ml, in this material, transmural pressure, determined as the difference between intravesical and perivesical pressures, did not differ statistically significantly from transmural pressure calculated as the difference of intravesical and intragastric pressures minus a hydrostatic component. At maximal bladder volumes transmural pressure determined in the first way was statistically significantly lower than that calculated in the second way. In the supine position the transmural pressure at bladder volume 300 ml, calculated as the difference of intravesical and perivesical pressures, was lower than in the upright position.