精氨酸强化的肠内营养对消化道肿瘤术后机体免疫及炎性反应的影响

目的探讨精氨酸(Arg)强化肠内营养对消化道肿瘤术后患者免疫功能及炎性反应的影响。方法将消化道肿瘤患者96例双盲、随机分为研究组和对照组。手术后第2天开始给予等热量、等氮量肠内营养制剂1周。研究组使用含Arg强化的肠内营养剂Impact,对照组使用普通的肠内营养剂Nutrison。对比观察术前、术后第1天和第8天两组血浆蛋白质水平、氮平衡、免疫功能状况、炎性反应、感染有关并发症、住院时间。结果在进行7 d的肠内营养以后,两组患者生命体征、血常规、肝肾功能、蛋白质水平、氮平衡、血脂和全身副反应差异无统计学意义;两组患者术后均有急性炎性反应的发生和免疫功能的降低。术后第8天研究组较对照组的IgG、IgA、IgM和CD3、CD4明显升高(P>0.05);血清IL-6、TNF-α、CRP、PGE2显著下降。术后住院时间,研究组显著低于对照组(P<0.05)。结论消化道肿瘤术后添加Arg的肠内营养,能改善患者手术后免疫功能低下,缓解急性炎性反应。     

围手术期免疫增强型肠内营养剂对全胃切除患者的影响

目的探讨全胃切除患者围手术期免疫增强型肠内营养支持对机体营养状态,免疫功能及炎症反应的影响。方法选择进展期胃癌根治性全胃切除患者48例,随机分为两组:围手术期肠内营养组(实验组,24例)和术后肠内营养组(对照组,24例)。实验组术前5d及术后8d给予免疫增强型肠内营养剂,术前未行常规肠道准备。对照组只在术后给予8d,术前常规行肠道准备。两组患者于术前1d及术后第1天、第8天分别抽取外周血测定血清总蛋白、白蛋白、IgA、T淋巴细胞亚群(CD4、CD4/CD8)、CRP和TNF-α。结果术中见两组患者肠道清洁程度无显著性差异;实验组与对照组比较,实验组血清总蛋白、白蛋白水平较高,随着肠内营养的进行术后实验组增高的更加明显,但无统计学意义;术后实验组CRP、TNF-α水平逐渐降低且同期水平低于对照组,IgA、CD4、CD4/CD8比例逐渐增高且同期水平高于对照组,差异有显著统计学意义,P0.05。结论全胃切除患者围手术期免疫增强型肠内营养支持可明显改善患者的营养状态,增强机体免疫功能,减轻机体炎症反应,促进机体恢复。     

全胃切除术后早期免疫增强型肠内营养支持的应用

目的研究胃癌患者行全胃切除术后早期应用免疫增强型肠内营养对机体恢复、免疫功能及炎性反应的影响。方法选择进展期胃癌患者,行全胃切除、食管空肠Roux—en-Y吻合及行食管空肠袢式吻合（少数几例）病例56例,随机分成2组：免疫增强型肠内营养组（实验组）和常规肠外营养支持组。二组患者均从术后第1天起从营养管道进行肠内和肠外营养,肠内营养组（实验组）使用免疫增强型肠内营养制剂,肠外营养组使用力能脂肪乳剂和复方氨基酸制剂。共1～7d,于术后第1、8天及术前分别抽取外周血测定血清总蛋白、白蛋白、前白蛋白、IgG、IgA、IgM,T淋巴细胞亚群、IL-2。结果两组血清总蛋白、白蛋白、前白蛋白及氮平衡均无显著差异。术后第8天实验组IgG、IgA、IgM、CD3、CIM和CIM／CD8均显著高于PN组（P〈0．05）。结论胃癌根治性全胃切除术患者术后早期免疫增强型肠内营养支持可有效改善患者免疫功能,并能减轻机体的炎症反应。     

早期肠内营养对老年结肠癌患者术后营养状况及免疫功能的影响

目的 探讨早期肠内营养对老年结肠癌患者术后营养状况及免疫功能的影响.方法 将116倒老年结肠癌患者随机分为观察纽和对照组各58例.观察组术中置穿刺式空肠造口管,术后20～24 h开始进行肠内营养}对照组术后行常规静脉液体输入治疗和普外科术后常规护理.两组患者分别于术前和术后第1天、第7天测定营养指标、免疫指标和生化检查,并观察术后并发症发生情况.结果 观察组术后第1天、第7天营养指标、生化指标、免疫指标(CD3+、CD4+、CD8+、CD4+/CD8+及NK细胞)与对照组比较,差异有统计学意义(均P<0.05);且术后并发症发生率显著低于对照组(P<0.05).结论 早期肠内营养可改善老年结肠癌患者术后营养状况和免疫功能,降低术后并发症的发生.     

腹腔镜胃癌根治术对早期胃癌患者免疫功能的影响

目的:探讨腹腔镜胃癌根治术对早期胃癌患者免疫功能的影响。方法:选取2016年1月—2019年1月在我院接受治疗的早期胃癌患者100例,根据手术方式不同分为观察组和对照组,对照组(44例)行传统开腹远端胃癌根治术,观察组(56例)行腹腔镜胃癌根治术。比较两组患者手术指标情况,记录手术前后超敏C反应蛋白(hs-CRP)、白细胞介素-6(IL-6)、血清肿瘤坏死因子-α(TNF-α)及免疫功能CD3~+、CD4~+、CD8~+、CD4~+/CD8~+变化,统计治疗期间并发症发生情况。结果:观察组切口长度、住院时间短于对照组,术中出血量低于对照组(P0.05);两组患者手术时间、淋巴结清扫数目比较差异无统计学意义(P0.05)。术后两组患者hs-CRP、IL-6、TNF-α均有升高,但观察组上述指标低于对照组(P0.05);两组患者CD3~+、CD4~+、CD8~+免疫功能指标均有降低,但观察组高于对照组(P0.05);两组患者CD4~+/CD8~+比值均升高,且观察组高于对照组(P0.05)。治疗期间观察组并发症总发生率低于对照组(7.14%vs 25.00%,P0.05)。结论:腹腔镜胃癌根治术治疗早期胃癌效果显著,可有效降低机体应激反应,减少免疫功能损伤,降低术后并发症发生率。     

结直肠癌术后早期肠内营养的有效性和安全性研究

探讨结直肠癌患者术后早期肠内营养的有效性和安全性。选取2014年2月—2015年2月收治的100例结直肠癌患者,按照随机数字表法分为观察组和对照组各50例,观察组术后早期给予肠内营养;对照组术后早期给予肠外营养,排气后逐渐给予肠内营养。观察并比较两组患者的术后肠道功能恢复时间、住院时间及花费、营养状况(血清总蛋白、白蛋白、前蛋白)、免疫功能(血清C3、C4、CD4~+、CD8~+、CD4~+/CD8~+、IgA、IgM、IgG)、应激反应(血清CRP、TNF-α、IL-6、胰岛素抵抗指数)及术后并发症(消化道症状、感染及吻合口瘘等)。观察组术后排气时间、排便时间明显早于对照组,住院时间明显短于对照组,住院花费明显低于对照组,差异有统计学意义(P0.05);两组术后并发症发生率差异无统计学意义(P0.05);观察组术后7 d血清总蛋白、白蛋白、前白蛋白水平明显高于对照组,差异有统计学意义(P0.05);观察组术后7 d血清C3、C4、CD4~+、CD4~+/CD8~+、IgA、IgM、IgG水平明显高于对照组,血清CD8~+、CRP、TNF-α、IL-6及胰岛素抵抗指数水平明显低于对照组,差异有统计学意义(P0.05)。结直肠癌手术患者术后早期给予肠内营养可改善患者营养状况,提高免疫力,抑制应激反应,安全有效,促进患者早日康复。     

腹腔镜辅助与开腹进展期胃癌根治术对机体免疫功能影响的比较

目的:腹腔镜辅助下与开腹行进展期胃癌根治术对机体免疫功能的影响.方法:将94例进展期胃癌患者按意愿分为腹腔镜组(n=47)与开腹组(n=47),测定2组术前及术后第3、7、14天患者血清IL-6、CRP、IgG、IgM、IgA、CD3+、CD4+,CD8+,CD4+/CD8+、人类白细胞抗原Ⅱ型(HLA-DR)、中性粒细胞(PMN)的数量.结果:2组术后第3天免疫球蛋白较术前均降低(P<0.05),开腹组术后第7天免疫球蛋白较术前低(P<0.05),腹腔镜组术后第7天免疫球蛋白较术前比较差异无统计学意义(P>0.05),除术后第3、7天IgM腹腔镜组高于开腹组(P<0.05),2组间IgA、IgG术后差异无统计学意义(P>0.05);2组术后第3、7天2组IL-6、CRP较术前明显升高(P<0.01),开腹组升高较腹腔镜组更明显(P<0.01);术后第3、7、14天腹腔镜组HLA-DR较术前明显升高(P<0.01),2组间差异有统计学意义(P<0.01,表5);2组术后第3天PMN较术前明显升高(P<0.01);2组外周血CD3+、CD4+,CD4+/CD8+术后第7、14天较术前均明显下降(P<0.01),术后腹腔镜组明显高于开腹组(P<0.01),且腹腔镜组较早恢复正常.结论:与开腹手术相比,腹腔镜手术对机体术后的免疫功能影响小,术后恢复快.     

免疫增强型肠内营养制剂对老年胃癌术后化疗免疫功能的影响分析

目的观察免疫增强型肠内营养制剂对老年胃癌患者术后免疫功能以及营养状态的影响,为此类患者的有效治疗方法提供参考。 方法选择2014年1月至2015年2月胃癌手术后进行化疗的80例患者,按照随机数表法分为对照组（采用常规的肠内营养制剂）和观察组（采用免疫增强型肠内营养制剂）,各40例。比较两组患者的免疫球蛋白、T细胞亚群、化疗之后营养指标以及住院天数、排便时间以及首次排气时间。 结果治疗后观察组患者的IgM、IgG、IgA上升幅度显著优于对照组,CD3、CD4、CD8明显优于对照组,TF、PA、ALB、Hb均高于对照组,差异有统计学意义（P<0.05）;观察组患者住院天数、排便时间以及首次排气时间明显短于对照组,差异有统计学意义（P<0.05）。 结论胃癌术后化疗通过免疫增强型肠内营养制剂能够显著改善免疫功能,缩短患者的住院时间,值得在临床上推广。     

加速康复外科对远端胃癌根治术后患者炎症反应和免疫功能的影响

目的:该研究应用加速康复外科新理念,观察对远端胃癌根治术后炎症反应和免疫功能的影响.方法:将46例远端胃癌手术病人随机分为两组,研究组(FTS组)痛人应用加速康复外科治疗,对照组病人应用传统围手术期处理方法.观察两组病人术后首次肠道通气时间、术后住院时间和并发症,并于术前1天、术后第1天和第3天检测病人外周血清中IL-6、CRP、CD3、CD4、CD8和CD4/CD8比值.结果:FTS组与对照组比,术后住院时间显著缩短(P<0.05);术后首次排气时间显著提前(P<0.05);而术后并发症两者无显著差异.FTS组与对照组比,术后第1、3天外周血中CRP和IL-6浓度均有显著下降(P<0.05);CD4/CD8比值均有显著增加(P<0.05).结论:应用加速康复外科能缓解远端胃癌手术病人的术后炎症反应,保护术后细胞免疫功能,促进病人快速康复.     

腹腔镜与开腹胃癌根治术的疗效及对患者免疫功能的影响

目的:比较腹腔镜与开腹胃癌根治术的疗效及对患者免疫功能的影响.方法:回顾性分析3年内收治的1 14例胃癌患者临床资料,其中55例行腹腔镜胃癌根治术(腹腔镜组)和59例行开腹胃癌根治术(开腹组),比较两组术后免疫功能的变化,以及术中、术后情况.结果:术后24,72 h免疫指标检测显示,两组患者IL-2和IL-6浓度均较术前明显升高(均P＜0.05),但开腹组两者升高程度大于腹腔镜组(均P＜0.05);开腹组外周血CD3+,CD4+,CD8+细胞水平均较术前明显下降(均P＜0.05),但以上T细胞亚群在腹腔镜组未见明显变化(均P＞0.05).与开腹组比较,腹腔镜组术中出血量、止痛药物使用次数、并发症均明显减少,首次排气时间、进食时间和下床活动时间,以及术后住院时间均明显缩短(均P＜0.05).结论:腹腔镜胃癌根治术对患者术后免疫功能影响少,机体损伤小,临床效果优于开腹手术.     

Vasopressor hormone response following mesenteric traction during major abdominal surgery

Background : We investigated the vasopressor hormone response following mesenteric traction (MT) with hypotension due to prostacyclin (PGI₂) release in patients undergoing abdominal surgery with a combined general and epidural anesthesia. Methods : In a prospective, randomized, placebo-controlled study we administered 400 mg ibuprofen (i.v.) in 42 patients scheduled for abdominal surgery. General anesthesia was combined with epidural anesthesia (T4-L1). Before as well as 5, 15, 30, 45, and 90 min after MT we recorded plasma osmolality, hemodynamics and measured 6-keto-PGFlα (stabile metabolite of PGI₂), TXB₂ (stabile metabolite of thromboxane A₂) active renin, and arginine vasopressin (AVP) plasma concentrations by radioimmunoassay. Catecholamine levels were assessed by high-pressure liquid chromatography (HPLC) with electrochemical detection. Results : Following MT, arterial hypotension occurred along with a substantial PGI₂ release. This was completely abolished by ibuprofen administration. Although plasma levels of 6-keto-PGF_1α (1133 (708) vs. 60 (3) ng/L, median (median absolute deviation), P=0.0001, placebo vs. ibuprofen) remained significantly elevated, blood pressure was restored within 30 min after MT in the placebo group. At the same point in time plasma concentrations of TXB² (164 (87) vs. 58 (1) ng/L, P=0.0001), epinephrine (46 (33) vs. 14 (6) ng/L, P=0.001), AVP (41 ± (18) vs. 12 (7) ng/L, P=0.0004), and active renin (27 (12) vs. 12 (4) ng/L, P = 0.001) were significantly higher in placebo-treated patients. Conclusion : Under combined general and epidural anesthesia arterial hypotension following MT due to endogenous PGI₂ release is associated with enhanced release of AVP, active renin, epinephrine and thromboxane A₂, presumably contributing to hemodynamic stability within 30 min after MT.     

A Teaspoon Pump for Pumping Blood with High Hydraulic Efficiency and Low Hemolysis Potential

Abstract: Virtually all blood pumps contain some kind of rubbing, sliding, closely moving machinery surfaces that are exposed to the blood being pumped. These valves, internal bearings, magnetic bearing position sensors, and shaft seals cause most of the problems with blood pumps. The original teaspoon pump design prevented the rubbing, sliding machinery surfaces from contacting the blood. However, the hydraulic efficiency was low because the blood was able to "slip around" the rotating impeller so that the blood itself never rotated fast enough to develop adequate pressure. An improved teaspoon blood pump has been designed and tested and has shown acceptable hydraulic performance and low hemolysis potential. The new pump uses a nonrotating "swinging" hose as the pump impeller. The fluid enters the pump through the center of the swinging hose; therefore, there can be no fluid slip between the revolving blood and the revolving impeller. The new pump uses an impeller that is comparable to a flexible garden hose. If the free end of the hose were swung around in a circle like half of a jump rope, the fluid inside the hose would rotate and develop pressure even though the hose impeller itself did not "rotate"; therefore, no rotating shaft seal or internal bearings are required.     

A comparison of the inhibitory effects of four volatile anaesthetics on the metabolism of chlorzoxazone, a substrate for CYP2E1, in rabbits

Background: Halothane inhibits in vitro and in vivo activity of cytochrome P-450 (CYP) 2E1. There are several fluorinated volatile anaesthetics besides halothane, and most of them are defluorinated by CYP2E1. It is unclear whether other fluorinated anaesthetics inhibit the in vivo activity of CYP2E1.
Methods: We compared the inhibitory effects of therapeutic concentrations of four inhalational anaesthetics, halothane, enflurane, isoflurane, and sevoflurane, on chlorzoxazone metabolism in rabbits receiving artificial ventilation.
Results: All four inhalational anaesthetics decreased arterial blood pressure and increased plasma chlorzoxazone concentration. However, no significant differences in the plasma chlorzoxazone concentration were found between the four anaesthetics. The estimated chlorzoxazone clearance increased after beginning inhalation with all four agents, but no significant difference in clearance was noted between agents.
Conclusions: At therapeutic concentrations, the in vivo inhibitory effect on chlorzoxazone metabolism was similar for all four inhalational anaesthetics examined, even though their chemical characteristics and extent of hepatic metabolism differ considerably.     

Microspheres Based Detoxification System: A New Method in Convective Blood Purification

Abstract: A variety of protein-bound or hydrophobic substances, accumulating as a result of pathologic conditions such as exogenous or endogenous intoxications, are removed poorly by conventional detoxification methods because of low accessibility (hemodialysis), insufficient adsorption capabilities (hemosorption), low efficiency (peritoneal dialysis), or economic limitations (high-volume plasmapheresis). Combining advantages of existing methods with microspheric technology, a module-based system was designed. Major operating parameters of the latter can be modified to allow for adjustment to individual clinical situations. An extracorporeal blood circuit including a plasmafilter is combined with a secondary high-velocity plasma circuit driven by a centrifugal pump. Different microspheric adsorbers can be combined in one circuit or applied in sequence. Thus, a prolonged treatment can be tailored using specially designed selective adsorber materials. Comparing this system with existing methods (high-flux hemodialysis, molecular adsorbent recycling system), results from our in vitro studies and animal experiments demonstrate the superior efficiency of substance removal.     

Tissue perfusion in relation to cardiac output during continuous positive-pressure ventilation and administration of propranolol or verapamil

Background : Our objective was to determine whether administration of propranolol or verapamil modifies the hemodynamic adaptation to continuous positive-pressure ventilation (CPPV), in particular the regional distribution of cardiac output (CO).
Methods : General hemodynamics and regional blood flows assessed by microsphere technique (15 (μm) were recorded in 16 anesthetized pigs during spontaneous breathing (SB) and CPPV with 8 cm H₂O end-expiratory pressure (CPPV8) before and after intravenous administration of propranolol (0.3 mg · kg⁻¹ followed by 0.15 mg · kg⁻¹ · h⁻¹, n=8) or verapamil (0.1 mg · kg⁻¹ followed by 0.3 mg · kg⁻¹ · h⁻¹, n=8).
Results : CPPV8 depressed CO by 25% without shifts in its relative distribution with the exception of a noteworthy increase in adrenal perfusion. Propranolol increased arterial blood pressure, and due to a fall in heart rate, CO dropped by 25%. The kidneys and, to a lesser extent, the splanchic region and central nervous system received increased fractions of the remaining CO at the expense of skeletal muscle flow. Similar patterns were seen during SB and CPPV8 such that the combination of propranolol and CPPV8 depressed CO by 50%. The circulatory effects of verapamil were less evident but myocardial perfusion tended to increase.
Conclusions : The combination of propranolol or verapamil with CPPV does not result in any specific hemodynamic interaction in anesthetized pigs, except that the combined effect of propranolol and CPPV may severely reduce CO.     

Volatile anaesthetics reduce adhesion of blood platelets under low-flow conditions in the coronary system of isolated guinea pig hearts

Background : Inhibitory effects of volatile anaesthetics on platelet aggregation have been demonstrated in several studies. However, the influence of volatile anaesthetics on intracoronary platelet adhesion has not been elucidated so far.
Methods : Isolated hearts of guinea pigs were perfused with buffer in the absence or presence of volatile anaesthetics (0.5 and 1 MAC) at constant coronary flow rates of 5 ml/min for 25 min, then 1 ml/min for 30 min and again 5 ml/min for 10 min. Before, during and after low-flow perfusion, a bolus of human platelets was applied into the coronary system. To simulate thrombogenic conditions, 0.3 U/ml human thrombin was infused during low-flow perfusion and reperfusion. The number of platelets sequestered to the endothelium was calculated from the difference between coronary in- and output of platelets. The myocardial production of lactate and consumption of pyruvate and coronary perfusion pressure were also determined.
Results : At a flow rate of 5 ml/min only about 3% of the applied platelets did not emerge from the coronary system, in any group. In contrast, 13.1±1.2% (mean±SEM) of infused platelets became adherent in low-flow perfusion in the control group without anaesthetic. The adherence was reduced with each 1 MAC isoflurane (to 6.2±1.2%), sevoflurane (to 4.4±0.9%) or halothane (to 3.2±1.5%) (each P <0.05 vs. control). Volatile anaesthetic, 0.5 MAC, did not inhibit platelet adhesion to a statistically significant extent in any case. Perfusion pressure and metabolic parameters were not statistically different between the control and the hearts exposed to anaesthetics.
Conclusion : Volatile anaesthetics in a concentration of 1 MAC can reduce the adhesion of platelets in the coronary system under reduced flow conditions. This action does not arise from vasodilation or inhibition of ischaemic stress.     

Bariatric Surgery in Some "Central and East-European (former Eastern bloc)"Countries - Current Status and Prediction for the Next Millennium

Background: Obesity is increasing globallly, including in the formerly "Eastern Bloc" countries. Methods: A survey was made of obesity and bariatric surgery. Results: In the 8 East and Central European countries studied, with total population 300 million, roughly 43% of the population was overweight (BMI 25-30), 23% obese (BMI > 30), with about 15 million people morbidly obese (BMI > 40). From 0-10 morbidly obese individuals/100,000/year undergo bariatric surgery. Conclusion: Most countries were found to provide inadequate treatment for obesity.The majority of the morbidly obese are not treated effectively. However, health-care awareness of obesity and bariatric surgeons are slowly increasing.     

Synergistic interaction between the effects of propofol and midazolam with fentanyl on phrenic nerve activity in rabbits

Background: It has been shown that the depressive effects of both propofol and midazolam on consciousness are synergistic with opioids, but the nature of their interactions on other physiological systems, e. g. respiration, has not been fully investigated. The present study examined the effect of propofol and midazolam alone and in combination with fentanyl on phrenic nerve activity (PNA) and whether such interactions are additive or synergistic. Methods: PNA was recorded in 27 anaesthetised and artificially ventilated rabbits. In three groups, propofol, fentanyl and midazolam were administered intravenously in incremental doses to construct dose-response curves for the depressant effects of each one on PNA. In another two groups, the effect of pretreatment with either fentanyl 1 μg · kg^?1 i. v. or midazolam 0.05 mg · kg^?1 i. v. on the effects of propofol and fentanyl respectively on PNA were studied. Results: Propofol and fentanyl caused a dose-dependent depression of PNA with complete abolition at the highest total doses of 16 mg · kg^?1 i. v. and 32 μg · kg^?1 i. v., respectively. In contrast, midazolam in incremental doses to a total of 0.8 mg · kg^?1 reduced mean PNA by 63%, but approximately 12% of PNA remained at a total dose as high as 6.4 mg · kg^?1. The mean ED₅₀s, calculated from dose-response curves, were 5.4 mg · kg^?1, 3.9 μg · kg^?1 and 0.4 mg · kg^?1 for propofol, fentanyl and midazolam, respectively. Initial doses of either fentanyl 1 μg · kg^?1 i. v. or midazolam 0.05 mg · kg^?1 i. v. acted synergistically with subsequent doses of either propofol or fentanyl to abolish PNA at total doses of 8 mg · kg^?1 and 8 μg · kg^?1, respectively. Conclusion: Fentanyl has a synergistic interaction with both propofol and midazolam on PNA and hence potentially on respiration.     

Influence of dopexamine hydrochloride on haemodynamics and regulators of circulation in patients undergoing major abdominal surgery

Background: Catecholaminergic support is often used to improve haemodynamics in patients undergoing major abdominal surgery. Dopexamine is a synthetic vasoactive catecholamine with beneficial microcirculatory properties. Methods: The influence of perioperative administration of dopexamine on cardiorespiratory data and important regulators of macro- and microcirculation were studied in 30 patients undergoing Whipple pancreaticduodenectomy. The patients received randomized and blinded either 2 μg · kg^?1 · min^?1 of dopexamine (n=15) or placebo (n=15, control group). The infusion was started after induction of anaesthesia and continued until the morning of the first postoperative day. Endothelin-1 (ET-1), vasopressin, atrial natriuretic peptide (ANP), and catecholamine plasma levels were measured from arterial blood samples. Measurements were carried out after induction of anaesthesia, 2 h after onset of surgery, at the end of surgery, 2 h after surgery, and on the morning of the first postoperative day. Results: Cardiac index (CI) increased significantly in the dopexamine group (from 2.61±0.41 to 4.57±0.78 1 · min^?1 · m^?2) and remained elevated until the morning of the first postoperative day. Oxygen delivery index (DO₂I) and oxygen consumption index (VO₂I) were also significantly increased in the dopexamine group (DO₂I: from 416±91 to 717±110 ml/m² · m²; VO₂I: from 98±25 to 157±22 ml/m² · m²), being significantly higher than in the control group. pHi remained stable only in the dopexamine patients, indicating adequate splanchnic perfusion. Vasopressive regulators of circulation increased significantly only in the untreated control patients (vasopressin: from 4.37±1.1 to 35.9±12.1 pg/ml; ET-1: from 2.88±0.91 to 6.91±1.20 pg/ml). Conclusion: Patients undergoing major abdominal surgery may profit from prophylactic perioperative administration of dopexamine hydrochloride in the form of improved haemodynamics and oxygenation as well as beneficial influence on important regulators of organ blood flow.