Hinman F
Department of Urology, University of California School of Medicine, San Francisco.
J Urol. 1988 Mar;139(3):519-23. doi: 10.1016/s0022-5347(17)42509-2.
Detubularized bowel segments provide greater capacity at lower pressure and require a shorter length of intestine than do intact segments. Four factors account for their superiority: 1) their configuration takes advantage of the geometric fact that volume increases by the square of the radius so that a patch or pouch has a larger diameter than a tube, 2) they accommodate to filling more readily because, as LaPlace's law states, the container with the greater radius and, thus, the greater mural tension will hold larger volumes at lower pressure, 3) compliance is superior to that of the tubular bowel and 4) contractile ability is blunted by the failure of contractions to encompass the entire circumference. For these reasons detubularized segments store more urine at lower pressures.
去管化肠段在较低压力下具有更大的容量，并且与完整肠段相比需要的肠长度更短。其优势归因于四个因素：1）其形态利用了这样一个几何事实，即体积随半径的平方增加，因此补片或囊袋的直径大于管的直径；2）它们更容易适应充盈，因为正如拉普拉斯定律所述，半径更大、因此壁张力更大的容器在较低压力下能容纳更大的体积；3）顺应性优于管状肠段；4）收缩能力因收缩不能环绕整个周长而减弱。由于这些原因，去管化肠段在较低压力下能储存更多尿液。
