Blok C, van Riel M P, van Venrooij G E, Coolsaet B L
J Urol. 1985 Jan;133(1):117-20. doi: 10.1016/s0022-5347(17)48817-3.
Increasing urethral occlusion pressures were created with an artificial sphincter in fresh bladder-urethra specimens of adult pigs. Detrusor leakage pressures remained about 25 per cent below the associated sphincter cuff pressures. The same relation was found when, during abrupt variations of cuff pressure, the detrusor leakage pressures were measured with antegrade urethral perfusion pressure measurement through a new sleeve catheter. Side-hole perfusion pressure measurements showed 100 per cent transmission of abrupt variations of cuff pressures to the inner urethral wall. No rotational differences could be detected. From the results it has been concluded that a probable pressure loss of about 25 per cent must be taken into account when converting artificial sphincter pressures into bladder pressures at which leakage will occur.
在成年猪新鲜膀胱尿道标本中，使用人工括约肌产生逐渐增加的尿道闭塞压力。逼尿肌漏尿压力比相关的括约肌袖带压力低约25%。当通过一种新型袖套导管进行顺行尿道灌注压力测量，在袖带压力突然变化期间测量逼尿肌漏尿压力时，也发现了相同的关系。侧孔灌注压力测量显示，袖带压力的突然变化能100%传递至尿道内壁。未检测到旋转差异。根据这些结果得出结论，在将人工括约肌压力转换为会发生漏尿的膀胱压力时，必须考虑大约25%的可能压力损失。
