【摘要】 目的探讨肠套叠压力灌肠整复过程中腹腔压力的变化。材料与方法8只普通家兔应用20%乌拉坦(4ml/kg)麻醉后,间隔5min经肛门向肠内注射50ml液体。采用膀胱法检测腹腔压力,记录肠内灌注液体量与对应的腹腔压力,描记腹内液体灌注量-腹腔压力曲线。结果灌注早期腹腔压力升高缓慢,当腹内注射量达到一定程度(700～950ml)时,继续增加腹内的灌注量,腹腔压力急剧上升。在腹腔压力明显上升前,每50ml液体灌入导致腹腔压力平均升高(0.2183±0.5106)cmH2O,在腹腔压力明显上升后每50ml液体平均使腹腔压力升高(2.4168±0.3954)cmH2O,两者差异具有统计学意义(P=0.000)。结论在肠套叠灌肠整复过程中的早期腹腔压力增加缓慢,但当灌入量达到腹腔的容受限度后腹腔压力会迅速升高。在肠套叠整复有困难时,应当考虑腹腔压力升高的可能。更多还原

【Abstract】 Objective To explore rabbits’s intra-abdominal pressure (IAP)changes in the enema process. Materials and Methods Rabbits were anesthetized by injection of 20% urethane(4 ml/kg),and 50ml liquid was infused into the rectum through the anus every 5 minites. IAP was measured by bladder technique. The volume of liquid that was infused and IAP were recorded. The volume of liquid and IAP scatter diagram was drawed. Results The IAP inreased slowly at the first several infusion,but when the infused volume reached certain degree (700-950 ml)the IAP markedlyincreased.Before IAP markedly increased,IAP increased average (0.2183±0.5106) cm H2O per 50 ml liquid. After IAP markedly increased,IAP increased average (2.4168±0.3954) cm H2O. After IAP marked increased,IAP increased more notebly( P =0.000). Conclusion Intra-abdominal pressure (IAP)increases slowly in the early process of intussusception air enema reduction,increases rapidly when the infused volume reached a certain degree. The high IAP should be considered when the reduction is difficult.更多还原