BIOMECHANICAL WALL PROPERTIES OF THE PORCINE RECTUM - A STUDY USING IMPEDANCE PLANIMETRY

被引：12

作者：

DALL, FH ^{[1
]}

JORGENSEN, CS ^{[1
]}

DJURHUUS, JC ^{[1
]}

GREGERSEN, H ^{[1
]}

机构：

[1] AARHUS UNIV,INST EXPTL CLIN RES,DK-8000 AARHUS,DENMARK

来源：

DIGESTIVE DISEASES | 1991年 / 9卷 / 06期

关键词：

IMPEDANCE PLANIMETRY; RECTUM; VISCOELASTIC WALL PROPERTIES; COMPLIANCE;

D O I：

10.1159/000171322

中图分类号：

R57 [消化系及腹部疾病];

学科分类号：

摘要：

The aim was to investigate biomechanical wall properties of the porcine rectum by way of manometry and impedance planimetry. Distension of a balloon inserted into the rectum with definite pressure steps up to 80 cm H2O was done for simultaneous recording of pressure and the balloon cross-sectional area (Bcsa). Viscoelastic wall properties were derived in terms of compliance. Besides eliciting the ascending peristaltic reflex and relaxation of the internal anal sphincter, the balloon inflation elicited a phase of rapid Bcsa increase followed by an accommodation phase of slow Bcsa increase to a steady-state Bcsa, reached within 3 min. The Bcsa increased in a nonlinear way with increasing balloon pressures with only a minimal increase from 70 to 80 cm H2O. Rectal compliance decreased in a nonlinear way with increasing distension pressure.

引用

页码：347 / 353

页数：7