外科营养学是在现代外科学基础上发展起来的一门新兴学科。自上世纪60年代Dudrick提出的肠外营养(PN)治疗在临床实施后，应用逐渐广泛，挽救了大量肠道功能衰竭和危重患者的生命。我国的外科营养学虽起步晚于国外，整体水平还有待提高，但通过众多临床医师和科研人员的不断努力业已呈现出一派欣欣向荣的景象……
To study the effects of early enteral nutrition and selective decontamination of digestive tract on the lipopolysacchride (LPS) translocation and cytokines and the developing of multiple organ dysfunction syndrome (MODS). Thirty six rabbits were divided into 3 groups: ①control group (CON group, n＝12), the rabbits were bled to shock state (MAP was 5.33 kPa) for 1 hour and then were resuscitated by with replacement of the lost blood and 2 volume of the equilibrium liquid, ②selective decontamination of digestive tract (SDD group, n＝12), the procedure was the same as the CON group but the rabbit was fed with the antibiotics 3 days before the experiment and all through the experiment, ③early enteral nutrition group (EN group, n＝12), treatment was the same as CON group. After resuscitation the feeding tube was placed into the stomach for enteral nutrition. On the 1st, 3rd, 5th and 7th day the blood samples were taken for testing the LPS, TNFα and the organs’ function. Results: The MODS incidence, the levels of LPS and TNFα of the EN group were obviously lower than those in SDD and CON groups; the levels of the LPS and TNFα of the SDD group remained high in the 5th day. SDD group had a higher incidence of the MODS and mortality than that of the EN group. Conclusion: Ischemiareperfusion damage can produce the LPS translocation, which causes the development of MODS. SDD can’t decrease the LPS translocation so that the incidence of MODS and mortality remain high. Early EN can inhibit LPS translocation and reduce the development of MODS.
目的 研究高血压脑出血患者开始建立肠内营养的时间，以揭示其建立肠内营养的最佳时机。 方法 选取2010年7月－2011年9月收治的高血压脑出血患者69例，随机将其分为A、B、C组，A组23例在血流动力学稳定后24 h内采取鼻胃管方式开始建立肠内营养；B组23例在24～48 h内开始肠内营养支持；C组23例在48～72 h开始肠内营养支持，并分别于营养支持前1 d及营养支持后的14 d检测三组患者三头肌皮皱厚度、上臂肌围、血清白蛋白、血红蛋白水平等相关营养指标的波动情况；监测第3、14天各组患者腹泻、便秘、应激性溃疡、肺部感染等临床并发症的发生情况。 结果 相关营养指标监测结果研究发现：建立肠内营养支持14 d后，三组患者其三头肌皮皱厚度及上臂肌围在营养支持前后差异无统计学意义（P＞0.05）；A、B组患者其血清白蛋白及血红蛋白水平在营养支持后较前有增高表现，差异有统计学意义（P＜0.05），且B组患者其血清白蛋白及血红蛋白水平增高程度较A组更为显著；C组患者其血清白蛋白水平在营养支持后有增高表现，且差异有统计学意义（P＜0.05），但血红蛋白水平较前比较差异无统计学意义（P＞0.05）。相关临床并发症发生率的研究结果如下：给予肠内营养支持3 d后，A、C组患者分别与其余两组比较发现，其腹泻、胃潴留、应激性溃疡、肺部感染发生率较其余两组比较差异无统计学意义（P＞0.05）；B组患者与其余两组比较，其应激性溃疡发生率较其余两组减低，且差异有统计学意义（P＜0.05）；腹泻、胃潴留、肺部感染较其余两组比较无显著差异；但随着观察时间的不断延长，在肠内营养支持后的14 d，A组患者较其余两组比较，其腹泻、胃潴留、应激性溃疡发生率仍无显著差异，但其肺部感染的发生率较B组增高，而较C组减低，且差异有统计学意义（P＜0.05）；B组患者较其余两组比较，其腹泻、应激性溃疡、肺部感染的发生率较其余两组均减低，且差异有统计学意义（P＜0.05），并且其肺部感染发生率减低程度较A组明显，其胃潴留发生率与其余两组比较时差异无统计学意义（P＞0.05）；C组患者与其余两组比较，其应激性溃疡、肺部感染个例发生率较其余两组增高，但差异无统计学意义（P＞0.05）。 结论 高血压脑出血患者于血流动力学稳定后的24～48 h内给予建立肠内营养支持，可利于患者相关营养指标的恢复，减少相关临床并发症的发生，可能会在一定程度益于患者的预后。
Objective To discuss the feasibility and safety of early enteral nutrition (EN) on treatment of severe acute pancreatitis (SAP) and its influence. Methods The advancement about application of early EN on treatment of SAP in recent years were reviewed. Results In patients with SAP, early EN via catheter placed in the jejunum could protect the integrity of intestinal barrier and reduce infectious complications. But no consensus had been reached about the starting time, ingredient and infusion mode yet. Conclusion Early EN may have positive effects on treatment of SAP, but further researches are still needed.
目的 探讨实施肠内营养的途径。方法 采用回顾性研究的方法，分析兰州大学第一医院2007年1月1日至2007年12月31日实施胆肠吻合术的15例患者的临床资料，包括复发性胆管结石4例，胆管癌3例，胆总管囊肿3例，壶腹癌（不能根治）5例； 平均年龄75.5岁； 在行胆肠Roux-en-Y吻合时，利用空肠盲襻实施空肠造瘘，术后第12 h开始肠内营养。统计肛门排气时间、住院时间及并发症。结果 15例患者平均肛门排气时间为54.6 h，平均住院时间为12 d，平均营养管拔除时间为20 d； 发生吻合口漏1例，肺部感染1例，切口感染1例，无一例因造瘘而发生机械性肠梗阻。结论 胆肠吻合利用空肠盲襻实施空肠造瘘肠内营养是肠内营养一种方便、可行的途径，它可以减少并发症的发生，缩短患者的住院时间，减轻患者的经济负担。与传统的方法比较，不会引起咽部不适及肺部感染，患者依从性好； 不会导致机械性肠梗阻，安全可行。
摘要:目的: 探讨早期肠内营养支持在胃肠道恶性肿瘤术后患者中应用的临床效果。 方法 :54 例胃肠道恶性肿瘤行根治手术的患者,随机分为对照组和研究组,分别接受肠外营养支持(PN)和肠内营养支持(EN)。比较两组治疗前后的血清白蛋白、前白蛋白和转铁蛋白水平,肝肾功能指标,胃肠功能恢复时间以及并发症的发生率。 结果 :经过术后7 d 的营养支持治疗,EN组术后血清前白蛋白、转铁蛋白水平升高程度明显大于PN组,胃肠功能较PN组更快恢复。在术后并发症的发生率和肝肾功能指标方面两组没有显著性差异。 结论 :早期肠内营养支持能够安全有效地促进胃肠道肿瘤术后患者的恢复。Abstract: Objective: To investigate the clinical effect of early enteral nutrition (EN) support on postoperative patients with gastrointestinal malignancy. Methods : A total of 54 postoperative patients with gastrointestinal malignancy were randomly divided into EN group and parenteral (PN) group. Both groups received isocaloric and isonitrogen nutrition support. The serum albumin, transferrin, prealbumin and liver and renal function were measured using standard techniques. The gastrointestinal function and postoperative complications were evaluated. Results : After nutrition support, serum albumin was not significantly different between two groups. Compared with PN group, serum transferrin and prealbumin level significantly increased in EN group (P＜005). The gastrointestinal function in EN group resumed earlier than that in PN group. There was also no difference in liver and renal function and postoperative complications between two groups. Conclusion : The application of early enteral nutrition support is beneficial to the recovery of the gastrointestinal cancer patients after surgery.
ObjectiveTo investigate the clinical advantages of enteral nutrition (EN) for acute pancreatitis（AP）comparing with parenteral nutrition (PN) and its prospect. MethodsLiteratures using MESH Browser in Medline were collected and reviewed. ResultsBeing of much higher cost and complications, total parenteral nutrition (TPN) ever regarded as most importantly for AP nutritional support, is now challenged by EN. Clinical evidence suggests enteral (jejunal) nutrition may diminish intestinal permeability to endotoxin and diminish bacterial translocation, thus reducing the cytokine drive to the generalized inflammatory response and preventing organ dysfunction, as well as achieving “pancreatic rest” equivalent to the TPN. Conclusion Early enteral nutrition should be used preferentially for patients with severe acute pancreatitis without paralytic ileus.
ObjectiveTo evaluate the effect of the early enteral nutrition（EEN） on the natural course in dogs with severe acute pancreatitis（SAP）.MethodsSAP model was induced by injecting 1 ml/kg of combined solution of 5% sodium taurocholate and 8 000-10 000 BAEE units trypsin/ml into pancrease via pancreatic duct.Fifteen dogs were divided into parenteral nutrition(PN) group and EEN group.Two groups were isonitrogenous and isocaloric.EEN was used at postoperative 24 h.Systemic plasma endotoxin level was quantified by the chromogenic limulus amebocyte lysate technique.Both portal and systemic blood sample were obtained before and 1，4，7 d following SAP, and cultured for aerobic as well as anaerobic bacterial.Serum glucose, calcium,amylase and lysosomal enzymes were determined.All dogs were injected with 1.85×106 Bq 125IBSA 4 h before sacrificed.The 125IBSA index of the pancreas/muscle and pancreas/blood was measured,and pancreas pathology was observed.Specimens of tissue from mesenteriolum and mesocolon lymph nodes,lung,pulmonary portal lymph nodes and pancreas were removed,weighed and homogenized in grinding tubes.Aliquots of the homogenata were cultured as blood mentioned above.The thickness of mucosa,the whole gut layer,the height of intestinal villi and their protein and DNA contents in the intestinal and transverse colon were determined.ResultsThe study showed that EEN significantly reduced the levels of systemic plasma endotoxin and the magnitude of bacterial translocation to the portal and systemic blood and distant organ,serum glucose in PN group was higher than that in EEN after SAP 4 d.There were no difference between two groups in the data of serum calcium,amylase and lysosomal enzymes,pathologic index and 125IBSA index of pancreas/muscle and pancreas/blood.EEN improved the gut barrier function by increasing the thickness of mucosa,the whole gut layer and the height of intestinal villi,increasing its protein and DNA contents in the bowel.ConclusionOur results suggest that EEN is safe and effective,and can decrease the rate of intestinal bacterial translocation.
ObjectiveTo investigate the clinical effects of early enteral nutrition in severe thoracic trauma patients requiring mechanical ventilation. MethodsWe randomly allocated 60 patients with thoracic trauma requiring mechanical ventilation into two groups by drawing lots including an early enteral nutrition (EEN) group and a parenteral nutrition (PN) group in our hospital between January 2013 and September 2014 year. There were 30 patients in each group. We compared the recovery results of the patients between the two groups. ResultsAfter the treatment of 7 and 14 days, indicators in the EEN group were better than before significantly and better than those in the PN group; diarrhea rate average days of ICU and the average days of hospital decreased significantly with statistical differences (P<0.05). There was no statistical difference in ventilator-associated pneumonia or the incidence of stress ulcer between the two groups (P>0.05). ConclusionEarly enteral nutrition in severe chest trauma patients requiring mechanical ventilation may promote protein synthesis, improve the nutritional status of patients, correct negative nitrogen balance, reduce inflammation response, reduce the complications.