脓毒性休克的复苏与多器官功能障碍综合征早期防治的研究

目的：评价修改后的复苏方案对脓毒性休克及多器官功能障碍综合征（MODS）的防治效果。方法：总结1995年3月至2001年8月收治的脓毒性休克患者87例，对比分析修改后的方案与旧方案治疗脓毒性休克的疗效及MODS的发生率与病死率。修改后的方案主要是及时、快速、充分液体复苏，应用血管活性药物改善脏器灌注，氧自由基清除剂减少自由基损害，早期开展肠道内营养保护肠黏膜屏障。结果：采用新方案明显缩短了休克的纠正时间，降低了血浆中内毒素与肿瘤坏死因子（TNF）的水平，减少了MODS的发生率与病死率。结论：修改后的复苏方案显著提高了复苏效率，有助于减少或消除MODS诱因，可显著降低MODS的发病率与病死率。     

Liberal vs. conservative vasopressor use to maintain mean arterial blood pressure during resuscitation of septic shock: an observational study

OBJECTIVE: The optimal role of vasopressor therapy in septic shock is not known. We hypothesized that the variability in the use of vasopressors to treat hypotension is associated with subsequent organ failures. DESIGN: Retrospective observational single-center cohort study. SETTING: Tertiary care hospital. PATIENTS AND PARTICIPANTS: Consecutive patients with septic shock. MEASUREMENT AND RESULTS: Ninety-five patients were enrolled. Serial blood pressure recordings and vasopressor use were collected during the first 12h of septic shock. Median duration of hypotension that was not treated with vasopressors was 1.37h (interquartile range [IQR] 0.62-2.66). Based on the observed variability, we evaluated liberal (duration of untreated hypotension < median) vs. conservative (duration of untreated hypotensionn > median) vasopressor therapy. Compared with patients who received conservative vasopressor therapy, patients treated liberally had similar baseline organ impairment [median Sequential Organ Failure Assessment (SOFA) score 8 vs. 8, p = 0.438] were more likely to be younger (median age 70 vs. 77 years, p = 0.049), to require ventilator support (78 vs. 49%, p < 0.001), and to have progression of organ failures after 24h (59 vs. 37%, p = 0.032). When adjusted for age and mechanical ventilation, early therapy aimed at achieving global tissue perfusion [odds ratio (OR) 0.33, 95% confidence interval (CI) 0.11-0.88), and early adequate antibiotic therapy (OR 0.27, 95% CI 0.09-0.76), but not liberal vasopressor use (OR 2.13, 95% CI 0.80-5.84), prevented progression of organ failures. CONCLUSIONS: In our retrospective study, early adequate antibiotics and achieving adequate global perfusion, but not liberal vasopressor therapy, were associated with improved organ failures after septic shock. Clinical trials which compare conservative vs. liberal vasopressor therapy are warranted.     

Role of arginine vasopressin and terlipressin as first-line vasopressor agents in fulminant ovine septic shock

Purpose  To compare the effects of first-line therapy with low-dose arginine vasopressin (AVP) or terlipressin (TP) on mesenteric blood flow, plasma AVP levels, organ function and mortality in ovine septic shock. Methods  Twenty-four adult ewes were anesthetized and instrumented for chronic hemodynamic monitoring. A flow-probe was placed around the superior mesenteric artery, and feces were extracted from the cecum. Following baseline measurements, feces were injected into the peritoneal cavity. When mean arterial pressure (MAP) decreased to less than 60 mmHg, animals were randomly assigned to receive AVP (0.5 mU kg⁻¹ min⁻¹), TP (1 μg kg⁻¹ h⁻¹) or saline (n = 8 each). A norepinephrine infusion was titrated to maintain MAP at 70 ± 5 mmHg in all groups. Results  Cardiovascular pressures, cardiac output, mesenteric blood flow, and lung tissue concentrations of 3-nitrotyrosine and hemoxygenase-1 were similar among groups throughout the study period. TP infusion resulted in lower plasma AVP concentrations, reduced positive net fluid balance, increased central venous oxygen saturation and slightly prolonged survival compared to control and AVP-treated animals. However, TP treatment was associated with higher liver transaminases and lactate dehydrogenase versus control animals after 12 h. Conclusions  This study provides evidence that the effects of low-dose TP differ from those of AVP, not only as TP has a longer half life, but also because of different mechanisms of action. Although low-dose TP infusion may be superior to sole norepinephrine or AVP therapy in septic shock, the safety of this therapeutic approach should be determined in more detail. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Sodium nitroprusside enhanced cardiopulmonary resuscitation (SNPeCPR) improves vital organ perfusion pressures and carotid blood flow in a porcine model of cardiac arrest

Purpose of the study

To describe a new method of CPR that optimizes vital organ perfusion pressures and carotid blood flow. We tested the hypothesis that a combination of high dose sodium nitroprusside (SNP) as well as non-invasive devices and techniques known independently to enhance circulation would significantly improve carotid blood flow (CBF) and return of spontaneous circulation (ROSC) rates in a porcine model of cardiac arrest.

Methods

15 isofluorane anesthetized pigs (30 ± 1 kg), after 6 min of untreated ventricular fibrillation, were subsequently randomized to receive either 15 min of standard CPR (S-CPR) (8 animals) or 5 min epochs of S-CPR followed by active compression–decompression (ACD) + inspiratory impedance threshold device (ITD) CPR followed by ACD + ITD + abdominal binding (AB) with 1 mg of SNP administered at minutes 2, 7, 12 of CPR (7 animals). Primary endpoints were CBF and ROSC rates. ANOVA and Fisher's exact test were used for comparisons.

Results/conclusion

There was significant improvement in the hemodynamic parameters in the SNP animals. ROSC was achieved in 7/7 animals that received SNP and in 2/8 in the S-CPR (p = 0.007). CBF and end tidal CO₂ (ETCO₂) were significantly higher in the ACD + ITD + AB + SNP (SNPeCPR) animals during CPR. Bolus doses of SNP, when used in conjunction with ACD + ITD + AB CPR, significantly improve CBF and ROSC rates compared to S-CPR.     

Splanchnic blood flow is greater in septic shock treated with norepinephrine than in severe sepsis

Objective To assess global and splanchnic blood flow and oxygen transport in patients with sepsis with and without norepinephrine treatment.Design Prospective, clinical study.Setting University hospital intensive care unit.Patients A convenience sample of 15 septic shock patients treated with norepinephrine and 13 patients with severe sepsis who did not receive norepinephrine.Measurements and main results There were no differences between the two groups in global haemodynamics and oxygen transport. Splanchnic blood flow and oxygen delivery (splanchnic DO₂ 303±43 ml/min per m²) and consumption (splanchnic VO₂ 100±13 ml/min per m²) were much higher in the septic shock group compared with the severe sepsis group (splanchnic DO₂ 175±19 ml/min per m², splanchnic VO₂ 61±6 ml/min per m²). Gastric mucosal pH was subnormal in both groups (septic shock 7.29±0.02, severe sepsis 7.25±0.02) with no significant difference. No significant differences between groups were detected in lactate values.Conclusion These data confirm a redistribution of blood flow to the splanchnic region in sepsis that is even more pronounced in patients with septic shock requiring norepinephrine. However, subnormal gastric mucosal pH suggested inadequate oxygenation in part of the splanchnic region due to factors other than splanchnic hypoperfusion. Progress in this area will depend on techniques that address not only total splanchnic blood flow, but also inter-organ flow distribution, intra-organ distribution, and other microcirculatory or metabolic malfunctions.     

高渗氯化钠溶液复苏对失血性休克大鼠T淋巴细胞亚群的早期影响

目的 探讨高渗氯化钠溶液(HS)复苏对失血性休克大鼠T淋巴细胞亚群的早期影响及其意义.方法 将18只SD大鼠制作成重度失血性休克模型,随机分为假手术组(Sham组)、高渗氯化钠溶液复苏组(HS组)和等渗盐水复苏组(NS组),每组6只,采用双抗体标记流式细胞分析技术测定休克前及复苏/急救后各组大鼠的外周血CD4+、CD8+的百分率及二者比值CD4+/CD8+.结果 在失血性休克/复苏/急救后的早期阶段,HS组和NS组大鼠的外周血CD4+细胞亚群表达均显著升高(P＜0.05),HS组大鼠的外周血CD8+细胞亚群表达也有所升高,而NS组大鼠的外周血CD8+细胞亚群表达则无明显改变,从而导致NS组大鼠的外周血CD4+/CD8+比值较Sham组和HS组明显增高,差异具有统计学意义(P＜0.05).结论 在重度失血性休克大鼠模型中,与NS复苏相比较,HS复苏能明显减轻复苏后早期的免疫炎症调节功能紊乱,有助于维持T细胞的辅助-抑制免疫炎症调节网络的平衡.     

Outcomes of patients undergoing early sepsis resuscitation for cryptic shock compared with overt shock

Introduction

We sought to compare the outcomes of patients with cryptic versus overt shock treated with an emergency department (ED) based early sepsis resuscitation protocol.

Methods

Pre-planned secondary analysis of a large, multicenter ED-based randomized controlled trial of early sepsis resuscitation. All subjects were treated with a quantitative resuscitation protocol in the ED targeting 3 physiological variables: central venous pressure, mean arterial pressure and either central venous oxygen saturation or lactate clearance. The study protocol was continued until all endpoints were achieved or a maximum of 6 h. Outcomes data of patients who were enrolled with a lactate ≥4 mmol/L and normotension (cryptic shock) were compared to those enrolled with sustained hypotension after fluid challenge (overt shock). The primary outcome was in-hospital mortality.

Results

A total of 300 subjects were enrolled, 53 in the cryptic shock group and 247 in the overt shock group. The demographics and baseline characteristics were similar between the groups. The primary endpoint of in-hospital mortality was observed in 11/53 (20%, 95% CI 11–34) in the cryptic shock group and 48/247 (19%, 95% CI 15–25) in the overt shock group, difference of 1% (95% CI −10 to 14; log rank test p = 0.81).

Conclusion

Severe sepsis with cryptic shock carries a mortality rate not significantly different from that of overt septic shock. These data suggest the need for early aggressive screening for and treatment of patients with an elevated serum lactate in the absence of hypotension.     

Evolution of peripheral vs metabolic perfusion parameters during septic shock resuscitation. A clinical-physiologic study

Purpose

Perfusion assessment during septic shock resuscitation is difficult and usually complex determinations. Capillary refill time (CRT) and central-to-toe temperature difference (Tc-toe) have been proposed as objective reproducible parameters to evaluate peripheral perfusion. The comparative evolution of peripheral vs metabolic perfusion parameters in septic shock resuscitation has not been studied. We conducted a prospective observational clinical-physiologic study to address this subject.

Methods

Patients with sepsis-related circulatory dysfunction were resuscitated according to a standard local algorithm. Perfusion assessment included serial determinations of metabolic (central venous O₂ saturation [Scvo₂] and central venous to arterial Pco₂ gradient [P(cv-a)co₂]) and peripheral perfusion parameters (CRT and Tc-toe, among others). Successful resuscitation was defined as a normal plasma lactate at 24 hours.

Results

Forty-one patients were included. The presence of normal values for both CRT and Tc-toe considered together at 6 hours was independently associated with a successful resuscitation (P = .02), as compared with the behavior of metabolic parameters. Capillary refill time was the first parameter to be significantly normalized.

Conclusion

Early recovery of peripheral perfusion anticipates a successful resuscitation compared with traditional metabolic parameters in septic shock patients. Our findings support the inclusion of serial peripheral perfusion assessment in multimodal monitoring strategies for septic shock resuscitation.     

高渗盐溶液联合己酮可可碱用于失血性休克早期复苏的研究现状

失血性休克液体复苏时如何减轻复苏后器官损伤是该领域近年来的研究热点.已有研究显示高渗盐溶液联合己酮可可碱用于失血性休克早期复苏时不仅能迅速提高有效循环血量、改善组织灌注,还能有效地减轻复苏后器官损伤,这为入院后进一步的治疗提供了良好的救治基础.这种复苏液联合"复苏药物"的模式为临床失血性休克患者的院前急救提供了新的思路,有进一步深入研究的价值.     

The effects of low-dose dopamine on splanchnic blood flow and oxygen uptake in patients with septic shock

Objective: To assess the effects of low-dose dopamine on splanchnic blood flow and splanchnic oxygen uptake in patients with septic shock. Design: Prospective, controlled trial. Setting: University hospital intensive care unit Patients: 11 patients with septic shock, diagnosed according the criteria of the 1992 American College of Chest Physicians/Society of Critical Care Medicine consensus conference, who required treatment with norepinephrine. Measurements and main results: Systemic and splanchnic hemodynamics and oxygen transport were measured before and during addition of low-dose dopamine (3 μg/kg per min). Low-dose dopamine had a marked effect on total body hemodynamics and oxygen transport. The fractional splanchnic flow at baseline ranged from 0.15 to 0.57. In 7 patients with a fractional splanchnic flow less than 0.30, low-dose dopamine increased splanchnic flow and splanchnic oxygen delivery and oxygen consumption. In 4 patients with a fractional splanchnic flow above 0.30, low-dose dopamine did not appear to change splanchnic blood flow. Conclusion: Low-dose dopamine has a potential beneficial effect on splanchnic blood flow and oxygen consumption in patients with septic shock, provided the fractional splanchnic flow is not already high before treatment. Received: 19 September 1995 Accepted: 21 September 1996     

优化的液体治疗策略对感染性休克患者预后影响的系统评价

目的 系统评价血流动力学优化的液体治疗策略对感染性休克患者预后的影响.方法 通过检索美国《医学索引》(MEDLINE)、Cochrane临床试验数据库、生物医学与药理学文摘数据库(Embase)、荷兰《医学文摘》、中国生物医学文献数据库(CBM)和中国期刊网全文数据库(CNKI)等文献数据库,收集全世界范围内采用有效的液体治疗策略治疗严重脓毒症和感染性休克患者的随机对照临床试验(RCT)相关文献.试验组按血流动力学监测完成最佳血流动力学复苏终点目标,对照组予常规治疗;两组再依据干预的时间不同分为早期组(6～24h完成目标性液体治疗)和晚期组(不清楚开始时间或＞24 h完成目标性液体治疗)进行亚组分析.按Cochrane系统评价方法筛选试验、评价质量、提取资料,采用RevMan 5.0软件进行Meta分析.结果 纳入合格文献11篇、共计研究对象2066例患者,合并结果显示:优化的液体治疗策略能降低患者的病死率[Peto比值比(OR)=0.63,95％可信区间(95％CI)0.48～0.84,P=0.002],各试验组间在统计学上存在异质性(P=0.01,I2=55％).早期优化液体治疗策略对病死率的研究(n=8)具有较小的异质性( P=0.44,I2=0％);试验组较对照组更能显著降低患者病死率(OR=0.53,95％CI 0.42～0.66,P＜0.000 01)和多器官功能障碍综合征(MODS)发生率(OR=0.61,95％CI0.43～0.85,P=0.004).晚期液体治疗对病死率的研究(n=3)存在异质性(P=0.05,I2=66％);试验组与对照组病死率(OR=0.89, 95％CI 0.52～1.54,P=0.68)和MODS发生率(OR=0.43,95％CI0.17～ 1.08,P=0.07)比较差异无统计学意义.结论 早期应用血流动力学最优化的液体治疗策略能降低感染性休克患者的病死率及MODS的发生率.     

不同液体对感染性休克早期液体复苏的影响研究

目的 观察用不同复苏液体进行早期液体复苏后对感染性休克患者血压、血乳酸清除率和病死率的影响.方法 将60例感染性休克成人患者随机分为生理盐水复苏组(NS组)、羟乙基淀粉复苏组(HES组)、4%高渗盐水复苏组(4%NaCl组)、高渗氯化钠羟乙基淀粉40注射液组(霍姆液组),每组15例.分别经中心静脉通路输入相应复苏液体进行包括液体复苏在内的抗休克治疗.观察各组患者治疗后血流动力学指标、血乳酸清除率和病死率的变化.结果 4%NaCl组、霍姆液组研究液体量及复苏液体总量均显著少于NS组和HES组(P均＜0.01).复苏1 h,霍姆液组平均动脉压较其他3组明显提升(P均＜0.01);24 h血乳酸清除率也较其他3组为高(P均＜0.01)I而4组间严重感染相关器官功能衰竭评分(SOFA评分)、急性生理学与慢性健康状况评分系统I(APACHE I)评分及28 d病死率差异均无统计学意义(P均＞0.05),但可观察到霍姆液组28 d病死率有下降趋势.结论 在感染性休克的早期液体复苏中,尽快提升血压有改善血乳酸清除率的作用,使用霍姆液可在迅速提升血压的同时,保持较少的复苏液体总用量.     

严重脓毒症和脓毒性休克患者复苏治疗与血糖控制的非线性相关分析研究

目的 研究严重脓毒症和脓毒性休克患者复苏治疗与应用胰岛素强化治疗应激性高血糖之间的关系,探讨非线性观点在脓毒症患者治疗中的价值.方法 回顾性分析129例严重脓毒症和脓毒性休克患者的住院资料,根据充分复苏标准完成所需时间(每6 h一组)分为8组,采用非线性最小二乘法比较各复苏组充分复苏完成所需时问与单位时间胰岛素用量之间的关系.结果 各复苏组充分复苏完成所需时间与单位时间胰岛素用量之间存在指数回归关系,指数曲线方程(^y)=e0.7393-0.0152x(a=0.739 3,b=0.015 2),且拟合度甚佳(R2=0.976 943 6).结论 在严重脓毒症和脓毒性休克患者的治疗过程中,复苏治疗完成的时问与机体紊乱的内分泌系统恢复有密切的关系,符合非线性观点.因此治疗上重在帮助机体重建已紊乱的网络,恢复其正常的生理谐振;而不仅仅是给予受损器官充分的支持和修复.     

早期复苏中高渗盐胶体对小肠黏膜形态学的影响

目的 观察高渗盐复合胶体液在失血性休克早期复苏中对小肠黏膜形态学特征的影响.方法 36只SD大鼠随机分为三组,通过控制性颈动脉放血制成失血性休克模型,分别应用相同容量的乳酸钠林格氏液、7.5%高渗盐水和琥珀酸明胶的混合液、ATP-MgCl2-乳酸钠林格氏液进行液体复苏,复苏结束后2 h处死动物,取末端回肠,常规固定切片染色,以光学图像分析法观察比较复苏后回肠黏膜的黏膜厚度和绒毛长度以及回肠黏膜上皮损伤指数等.结果 三组复苏方案之间的回肠黏膜损伤指数比较有显著性差异（P＜0.05）,高渗盐明胶组的回肠黏膜损伤指数最小.三组复苏方案之间的回肠黏膜厚度和绒毛长度比较均无显著性差异.结论 高渗盐复合胶体溶液在控制性失血性休克的早期复苏中对回肠黏膜的形态学损伤较小,能相对较好地保护肠黏膜物理屏障.     

The pathophysiology of septic shock

Septic shock remains a significant challenge for clinicians. Recent advances in cellular and molecular biology have significantly improved our understanding of its pathogenetic mechanisms. These improvements in understanding should translate to better care and improved outcomes for these patients.     

早期应用去甲肾上腺素的液体复苏方案对脓毒性休克大鼠肺脏的作用

目的 研究早期与延迟应用去甲肾上腺素的两种液体复苏方案对脓毒性休克大鼠肺损伤的影响.方法 60只Wistar大鼠随机(随机数字法)分成4组:健康对照组(A组,n=15),休克对照组(B组,n=15),传统液体复苏组(C组,n=15),早期应用去甲肾上腺素组(D组,n=15),所有大鼠给予经口气管插管机械通气,相同呼吸机模式及参数.LPS静脉注射建立脓毒性休克大鼠模型,C组于液体复苏0.5h后应用去甲肾上腺素,D组于液体复苏同时应用去甲肾上腺素,记录各组大鼠生命体征、补液量及去甲肾上腺素用量.2h后处死大鼠,进行血气分析,HE染色观察肺组织形态学变化,ELISA检测肺泡灌洗液及血清中炎性介质的表达,检测肺组织中髓过氧化物酶、超氧化物歧化酶及丙二醛表达.计量资料以均数±标准差((x)±s)表示,采用SPSS13.0统计软件分析,组间比较采用t检验,以P＜0.05为差异具有统计学意义.结果 早期应用去甲肾上腺素与传统补液方案比较明显减少了达到目标血压所需的补液量,使氧合指数进一步改善,同时降低了血乳酸水平(P＜0.05);HE染色结果显示早期应用去甲肾上腺素使肺水肿程度明显减轻,肺组织中炎性细胞侵润程度、肺泡充血情况得到明显改善;早期应用去甲肾上腺素和传统补液方案均使血清和肺泡灌洗液中的促炎介质白介素-6、白介素-8、肿瘤坏死因子-α表达水平下调,但早期应用去甲肾上腺素使促炎介质表达下降更为明显,与传统补液比较差异具有统计学意义(P＜0.05);早期应用去甲肾上腺素仅使髓过氧化物酶表达较传统补液组及休克对照组明显下降,两种补液方案对超氧化物歧化酶和丙二醛表达均无明显改善.结论 早期应用去甲肾上腺素的液体复苏方案与传统补液方案比较从多层面改善了脓毒性休克大鼠肺损伤的程度.     

Renal blood flow and function during recovery from experimental septic acute kidney injury

Objective To measure renal blood flow (RBF) and renal function during recovery from experimental septic acute kidney injury (AKI). Design Controlled experimental study. Subjects Nine merino ewes. Setting University physiology laboratory. Intervention We recorded systemic and renal hemodynamics during a 96-h observation period (control) via implanted transit-time flow probes. We then compared this period with 96 h of septic AKI (48 h of Escherichia coli infusion) and subsequent recovery (48 h of observation after stopping E. coli). Measurements and results Compared with the control period, E. coli infusion induced hyperdynamic sepsis (increased cardiac output and decreased blood pressure) and septic AKI (serum creatinine 65.4 ± 8.7 vs. 139.9 ± 33.0 μmol/l; creatinine clearance 73.8 ± 12.2 vs. 40.2 ± 17.2 ml/min; p < 0.05) with a mortality of 22%. RBF increased (278.8 ± 33.9 vs. 547.9 ± 124.8 ml/min; p < 0.05) as did renal vascular conductance (RVC). During recovery, we observed a decrease in RVC and RBF with all values returning to control levels. Indices of tubular function [fractional excretion of sodium (FENa) and urea (FEUn) and urinary sodium concentration (UNa)], which had been affected by sepsis, returned to control values after 18 h of recovery, as did serum creatinine. Conclusions Infusion of E. coli induced a hyperdynamic circulatory state with hyperemic AKI. Recovery was associated with relative renal vasoconstriction and reduction in RBF and RVC back to control levels. Indices of tubular function normalized more rapidly than changes in RBF. This article is discussed in the editorial available at: .     

The effects of prostacyclin on gastric intramucosal pH in patients with septic shock

Objective To investigate whether infusing prostacyclin (PGI₂) in patients with septic shock improves splanchnic oxygenation as assessed by gastric intramucosal pH (pHi).Design Interventional clinical study.Setting Surgical ICU in a university hospital.Patients 16 consecutive patients with septic shock according to the criteria of the ACCP/SCCM consensus conference all requiring norepinephrine to maintain arterial blood pressure.Interventions All patients received PGI₂ (10 ng/kg·min) after no further increase in oxygen delivery could be obtained by volume expansion, red cell transfusion and dobutamine infusion. The results were compared with those before and after conventional resuscitation. The patients received continuous PGI₂ infusion for 3–32 days.Measurements and results O₂ uptake was measured directly in the respiratory gases, pHi was determined by tonometry. Baseline O₂ delivery, O₂ uptake and pHi were 466±122 ml/min·m², 158±38 ml/min·m², and 7.29±0.09, respectively. While O₂ uptake remained unchanged, infusing PGI₂ increased O₂ delivery (from 610±140 to 682±155 ml/min·m²,p<0.01) and pHi (from 7.32±0.09 to 7.38±0.08,p<0.001) beyond the values obtained by conventional resuscitation. While 9 of 11 patients with final pHi>7.35 survived, all patients with final pHi<7.35 died (p<0.01).Conclusions Infusing PGI₂ in patients with septic shock increases pHi probably by enhancing blood flow to the splanchnic bed and thereby improves splanchnic oxygenation even when conventional resuscitation goals have been achieved.Presented in part at the 13th International Symposium on Intensive Care and Emergency Medicine, Brussels, March 1993     

连续性血液净化对感染性休克患者血流动力学及氧合指数的影响

目的观察连续性血液净化(CBP)对感染性休克患者血流动力学及氧合指数的影响。方法我科确诊的25例感染性休克患者行CBP治疗及脉搏波形心排量监测(PICCO)72小时,治疗前和治疗后1、2、6、12、24、48、72小时分别测量持续心排量指数(CCI),外周血管阻力指数(SVRI)等血流动力学参数,同时检测动脉血气分析计算氧合指数,记录心率(HR)、有创平均动脉压(MAP)及去甲肾上腺素(NA)剂量的变化。结果治疗前、后血流动力学指标MAP、CCI、SVRI及氧合指数(OI,PaO2/FiO2)均有明显的改善(P0.05),在48及72小时改善尤为明显(P0.01),同时伴随去甲肾上腺素剂量的下降。结论 CBP可改善感染性休克患者血流动力学参数及氧合指数。