罗比卡因用于腰麻下剖宫产的临床观察

罗比卡因是一种新型长效酰胺类局麻药 ,对中枢神经及心血管毒性发生率低[1,2 ] 。我们将罗比卡因用于腰麻下行剖宫产术进行观察 ,比较罗比卡因与布比卡因于腰麻下行剖宫产术对心血管的影响。资料与方法一般资料　ＡＳＡⅠ～Ⅱ级 6 0例行剖宫产术患者随机分成罗比卡因组 (ＧｒｏｕｐＲ)、布比卡因组 (ＧｒｏｕｐＢ) ,每组 30例。两组均无严重内科和产科并发症。麻醉方法　麻醉前建立静脉通道 ,并在 30分钟内输入复方乳酸钠 30 0～ 5 0 0ｍｌ。两组均取Ｌ3～ 4间隙 ,用笔尖式脊麻 硬膜外联合穿刺针 (上海埃斯埃医械塑料制品有限公司生产 )穿刺…     

硬膜外阻滞用于分娩镇痛时对感觉和运动神经阻滞的观察

罗比卡因是一种新型酰胺类局麻药 ,低浓度时对运动神经的阻滞弱于布比卡因。本文比较持续硬膜外罗比卡因和布比卡因用于分娩镇痛时对感觉和运动神经阻滞效果。资料与方法一般资料　选择ＡＳＡⅠ～Ⅱ级的初产妇 76例 ,足月、单胎、无妊娠合并症 ,自愿接受分娩镇痛。随机分罗比卡因组(Ａ组 )和布比卡因组 (Ｂ组 ) ,每组 38例 ,两组产妇年龄、身高、体重相同无显著性差异 (Ｐ >0 0 5 ) (表 1)。方法　两组产妇均以宫口开至 3ｃｍ时行硬膜外Ｌ2～ 3 椎间隙穿刺 ,向头端置管 3 5ｃｍ。Ａ组注入 0 2 5 %罗比卡因 ,Ｂ组注入 0 2 5 %布比卡因。两…     

相同浓度的左旋布比卡因、罗比卡因与布比卡因硬膜外腔给药用于剖宫产术时效性的比较

目的比较左旋布比卡因、罗比卡因和布比卡因用于硬膜外麻醉剖宫产术的阻滞效果、母婴安全和药物不良反应.方法采用随机双盲法,将48例择期剖宫产手术的足月单胎产妇分为三组：0.5%左旋布比卡因组（L组）17例、0.5%罗比卡因组（R组）15例和0.5%布比卡因组（B组）16例.记录硬膜外腔给药后产妇的感觉阻滞和运动阻滞的起效和持续时间、肌松满意程度、麻醉质量评价、恶心和呕吐等不良反应及术中心率、血压、脉搏血氧饱和度和新生儿1 min和5 min Apgar评分.结果产妇的一般情况、新生儿的Apgar评分组间无显著性差异;三组术中低血压及其他不良事件（恶心和呕吐）的发生率无显著性差异;各组的麻醉质量（术中的疼痛评分和肌松满意度）基本一致;感觉阻滞起效和维持时间组间无显著性差异,运动阻滞改良Bromage评分为1分的起效时间和持续时间组间有显著性差异.结论常用量0.5%左旋布比卡因、罗比卡因和布比卡因用于剖宫产手术的硬膜外麻醉时具有相似的麻醉效能和安全性.     

罗比卡因用于妇科手术后镇痛

罗比卡因是一种新型的长效酰胺类局麻药 ,低浓度时产生感觉运动阻滞分离 ,因此硬膜外镇痛时运动阻滞轻 ,病人可以更早地下地活动。本文旨在评价罗比卡因用于妇科手术的镇痛效果及不良反应。资料与方法一般资料　选择 80例择期行子宫切除术的病人 ,ＡＳＡⅠ～Ⅱ级 ,无严重心肝肾疾患 ,随机分为两组 :布比卡因 (Ｂ)组和罗比卡因 (Ｒ)组 ,每组 40例。麻醉监测与镇痛　病人入室后开放静脉 ,监测无创动脉压、心电图和脉搏氧饱和度。两组均采用腰麻 硬膜外联合麻醉方法 ,穿刺间隙Ｌ2～ 3 ,腰麻予 0 5 %布比卡因 3ｍｌ,硬膜外腔头向置管 4ｃｍ ,…     

相同浓度罗比卡因与布比卡因用于颈神经丛阻滞的比较

目的评价相同浓度罗比卡因与布比卡因用于颈神经丛阻滞的麻醉效果.方法49例ASAⅠ～Ⅱ级甲状腺肿物切除患者随机分为两组,罗比卡因组(Ⅰ组)31例,布比卡因组(Ⅱ组)18例,分别用0.375%罗比卡因和0.375%布比卡因10 ml阻滞颈浅丛神经,用0.25%罗比卡因和0.25%布比卡因10 ml阻滞其深丛.记录麻醉效果及所产生的并发症,记录麻醉前(T0)、麻醉后即刻(T1)、麻醉后的5 min(T2)、10 min(T3)、15 min(T4)、30 min(T5)及手术结束(T6)时的HR、SBP、DBP、MAP、SpO2、RR、Mv、VT.结果两组麻醉效果相同,产生的并发症也无显著性差异(P＞0.05).罗比卡因对抬头肌力的影响显著弱于布比卡因(P＜0.01).两组HR麻醉后均有显著升高(P＜0.05),SBP、DBP、MAP在T1～T5时有显著升高(P＜0.05),在T6时与T0相比无显著性差异(P＞0.05).与T0比较,两组SpO2、RR、Mv和VT在各时间点上无显著性差异(P＞0.05).结论0.375%罗比卡因和0.375%布比卡因用于颈浅丛神经阻滞,0.25%罗比卡因和0.25%布比卡因用于颈深丛阻滞均产生较好的麻醉效果.罗比卡因由于运动神经阻滞较弱,更适于颈神经丛阻滞.     

布比卡因硬膜外自控镇痛对心肌酶谱和心电的影响

目的 观察氯胺酮、布比卡因应用于硬膜外自控镇痛(PCEA)对肌酸磷酸激酶(CPK)、肌酸磷酸激酶同工酶(CK-MB),心电图PR、QRS、QT间期的影响.方法 选择硬膜外麻醉下行下腹部或下肢择期手术.ASAⅠ或Ⅱ级的患者60例.随机均分为三组:A组:0.25%布比卡因+氟哌利多10 mg;B组:0.16%布比卡因+氯胺酮200 mg+氟哌利多10 mg;C组:0.16%布比卡因+曲马多200 mg+氟哌利多10 mg.每组镇痛液均用生理盐水配至150 ml.分别于术毕硬膜外给予负荷量后接镇痛泵.于术后72h复查心肌酶谱CPK、CK-MB,心电图PR、QRS、QT间期.结果 CPK、CK-MB,PR、QRS、QT术前、术后各组内、组间比较差异均无统计学意义.结论 常用剂量布比卡因行PCEA效果确切,对心肌酶谱和心电图无影响.     

罗比卡因用于高位硬膜外麻醉的临床观察

本研究拟通过对临床常用浓度的罗比卡因和布比卡因在高位硬膜外阻滞时的效能、安全性比较 ,为罗比卡因在高位硬膜外用药提供资料。资料与方法一般资料　 80例择期行乳房手术的女性患者 ,ＡＳＡⅠ～Ⅱ级 ,手术时间 (40± 12 )分钟 ,随机均分为四组 :0 2 5 %布比卡因组 (Ⅰ组 ) ,0 2 5 %罗比卡因组 (Ⅱ组 ) ,0 5 %布比卡因组 (Ⅲ组 ) ,0 5 %罗比卡因组 (Ⅳ组 ) ,行Ｔ2～ 3 硬膜外麻醉 ,置入导管 ,回吸无血或脑脊液后 ,采用双盲法分别注射上述药物 18ｍｌ。观察项目和指标　 (1)感觉阻滞 :平头针刺法 ,每分钟测一次麻醉平面 ,起效时间为注…     

不同比重罗哌卡因腰麻在妇产科手术中的应用比较

目的 :探讨不同比重 1 0mg罗哌卡因用于妇科手术的麻醉效果和并发症发生率 ,并与布比卡因比较。方法 :37例妇科择期手术病人 ,年龄 2 2～ 6 0岁 ,体重 50～ 70kg ,ASAⅠ～Ⅱ级 ,随机分为 3组 :R1组 (罗哌卡因重比重液组 ) :罗哌卡因 1 0mg + 5%葡萄糖 1ml+麻黄素 1 5mg共 2 .5ml重比重液 ;R2 组 (罗哌卡因轻比重液组 ) :罗哌卡因 1 0mg +注射用水 3.5ml+麻黄素 1 5mg共 5ml轻比重液 ;B组 (布比卡因重比重液组 ) :布比卡因 7.5mg + 5%葡萄糖 1ml+麻黄素 1 5mg共 2 .5ml重比重液。采用腰麻 -硬膜外联合穿刺 ,成功后将不同局麻药在 30s内注入蛛网膜下腔。观察麻醉起效时间、最高麻醉平面及到达时间、运动阻滞分级、术中镇痛肌松情况 ,麻醉消退时间及术中低血压、恶心、呕吐、术后头痛发生率。对给药后 2 0min平面不足T10 者硬膜外追加 0 .5%罗哌卡因和 1 %利多卡因以满足手术要求。结果 :麻醉起效时间、最高麻醉平面及到达时间组间比较无差异 ,但R2 组显示单边阻滞者多于R1组和B组 ,且需辅以硬膜外给药例数多于R1和B组 ;手术开始时间R1组 ( 1 2min)早于R2 组 ( 1 7.8min)和B组 ( 1 5min) ;术中镇痛、肌松效果 ,单纯蛛网膜下腔阻滞比较 ,R1组与B组相同 ,R2 组镇痛完善例数明显低于R1组和B组 ,辅助硬膜外给药     

低浓度罗比卡因复合低剂量芬太尼在高胸段硬膜外麻醉的临床研究

选择高位胸段硬膜外麻醉下行乳腺切除的ASAⅠ～Ⅱ级患24例，随机分成两组：0．25％罗比卡因 2μg／m1芬太尼(R)组和0．25％布比卡因(B)组。麻醉前后定时测血压(SBP、DBP)、心率(HR)、血氧饱和度(SPO2)、呼吸频率(RR)、动脉血二氧化碳(PaC02)、感觉被阻滞范围。两组均能满足麻醉要求(C5-T8)。麻醉后两组血压(SBP、DBP)、心率(HR)显下降(P＜0．01)，两组间麻醉后心率(HR)有显差异(P＜0．05)，R组下降幅度大于B组。R组SPO2麻醉前后无显变化，而B组显下降(P＜0．01)，两组间有显差异(P＜0．01)。R组麻醉后PaC02下降(P＜0．05)，B组麻醉后上升(P＜0．01)，两组间有显差异(P＜0．01)。0．25％罗比卡因 2μg/ml芬太尼在高位胸段硬膜外麻醉中更安全。     

布比卡因—芬太尼脊麻用于急诊剖宫产术的临床观察

我们对 6 0例急诊剖宫产术 ,采用不同剂量的布比卡因、芬太尼用于脊麻进行对比观察 ,现报告如下。资料与方法一般资料　 6 0例单胎足月妊娠急诊产妇 ,ＡＳＡⅠ～Ⅱ级 ,因各种产科原因 ,需在麻醉下行剖宫产术。随机分为三组 ,Ⅰ组 (ｎ =2 0 )为对照组 ,布比卡因 15ｍｇ;Ⅱ组 (ｎ =2 0 ) ,布比卡因15ｍｇ+芬太尼 10 μｇ ;Ⅲ组 (ｎ =2 0 ) ,布比卡因 7 5ｍｇ +芬太尼2 0 μｇ ,三组麻药均加 10 %葡萄糖液至 3ｍｌ重比重液。三组产妇的年龄、体重、身高及手术时间无明显差异。麻醉方法　病人入手术间先开放上肢静脉。选Ｌ3～ 4间隙穿刺 ,斜面向…     

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.     

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.     

Is the recovery profile of mivacurium independent of the rate of decay of its plasma concentration in patients with normal plasma cholinesterase activity?

Background: The duration of action of muscle relaxants is poorly correlated to the rate of decay of their plasma concentration. The plasma concentration of mivacurium may rapidly decrease below its active concentration because of the extensive hydrolysis of mivacurium. By inflating a tourniquet on one upper limb for 3 min after the administration of atracurium, mivacurium or vecuronium, we studied the influence of the initial decline of their plasma concentration on their effect. Methods: In 50 patients anaesthetised with thiopental, isoflurane and fentanyl, the effect of bolus doses of 0.15 or 0.25 mg . kg^?1 mivacurium (MIV 15, MIV 25), 0.3 or 0.5 mg . kg^?1 atracurium (ATR 30, ATR 50) and 0.06 or 0.1 mg . kg^?1 vecuronium (VEC 06, VEC 10) were measured on both arms (evoked response of the adductor pollicis to train-of-four stimulation every 12 s), a tourniquet being applied on one arm just before and during 3 min after the muscle relaxant bolus. Results: Tourniquet inflation of 3 min almost abolished the neuromuscular effect of mivacurium. In the vecuronium groups and in the ATR 50 group, tourniquet inflation did not modify the maximum degree of depression of the twitch response. Also, the duration of action of vecuronium was unaffected by the tourniquet. In the ATR 30 group, times to return of the twitch response to 25% (duration 25%) and 75% (duration 75%) of control response were significantly shorter in the cuffed arm, 23 min vs 27 min, and 41 min vs 45 min, respectively. In the ATR 50 group, only duration 25% was significantly shorter in the cuffed arm (41 min vs 45 min). Conclusion: The results suggest that the rate of decline of the plasma concentration of mivacurium is so rapid, that a very low and almost clinically ineffective concentration is present as soon as 3 min after its administration. The results also indicate that the recovery from a mivacurium-induced neuromuscular blockade is not influenced by the rate of decay of its plasma concentration in patients with genotypically normal plasma cholinesterase.     

Membranes in Artificial Organs

Abstract: Membrane processes play a pivotal and enabling role in modern replacement therapy for acute and chronic organ failure and in the management of immunologic diseases. In fact, virtually all contemporary extracorporeal blood purification methods employ membrane devices, and the next generation of artificial organs and tissue engineering therapies are almost certain to be similarly grounded in membrane technology. In this short essay, we comment on the similarities and differences among synthetic membranes and their natural counterparts and also provide a critical overview of the demographics and technology of hemodialysis, hemofiltration, apheresis, oxygenation, and emerging membrane technologies and applications.     

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.     

Dilemma of Membrane Biocompatibility and Reuse

Abstract: Numerous articles have been published on the multiple use of dialyzers and on the effect of different reprocessing chemicals and techniques on the dialyzer biocompatibility and performance. The results often appear contradictory, especially those comparing standard biocompatibility parameters. Despite this confusion, a discerning review of the published works allows certain limited conclusions to be drawn. Reprocessing of used hemodialyzers changes the biocompatibility profile of a dialyzer as defined by the parameters complement activation. leukopenia, and cytokine release. The effect of reprocessing depends on the chemicals and reprocessing technique applied and also on the type of membrane polymer being subjected to the reprocessing procedure. Reports of pyrogenic reactions indicate that the flux of the membrane also influences how suitable it is for safe reuse. An increased risk of allergic and pyrogenic reactions appears to be associated with dialyzer reuse. Furthermore, there has been a lack of investigations into the immunologic effect of the layer of adsorbed and chemically altered proteins that remains on the inner surface of reprocessed dialyzers. We conclude that the clinical benefit of dialyzer reuse cannot be generally accepted from a biocompatibility point of view.     

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.