直肠顺应性是直肠运动的重要特征,反映直肠壁的可扩张性,即腔内压力增大时直肠扩张的容积变化。正常情况下当直肠充胀,其容量上升为300mL时,直肠内压不出现任何变化,甚至反而下降,以维持肛门自制,直到直肠所能耐受的最大容量引起便急感时,压力才明显上升,此种特性称直肠顺应性 Rectal compliance is an important feature of rectal movement, reflecting the expansion of the rectal wall, that is, when the intraluminal pressure increases the volume of rectum dilatation. Under normal circumstances when the rectum is inflated, its capacity increased to 300mL, the rectal pressure does not appear any change, or even decreased, to maintain anal self-control, until the maximum capacity of the rectum can cause urgency, the pressure was obvious Rise, this feature is called rectal compliance