连续性血液净化治疗对严重脓毒症患者内皮细胞功能的影响

目的 观察连续性血液净化(CBP)对严重脓毒症患者的治疗作用,探讨CBP对严重脓毒症患者内皮细胞功能的影响.方法 按随机原则将严重脓毒症患者分为常规对照组22例,联合CBP组23例.两组患者均按照2008年脓毒症全球治疗指南常规治疗,联合CBP组同时行连续性静-静脉血液滤过(CVVH),置换液量为40 ml·kg-1·h-1,治疗72 h.分别于治疗前及治疗24 h、72 h(治疗终止10 min)行动脉血气分析,测定血浆活化蛋白C(APC)、可溶性细胞间黏附分子-1(sICAM-1)及血管性血友病因子(vWF)含量,并观察患者重症监护病房(ICU)住院时间、机械通气时间及28 d病死率.结果 联合CBP组患者ICU住院时间(d)及机械通气时间(d)均明显短于常规对照组(9.12±3.07比11.64±4.82;5.52±3.48比8.02±5.25,均P<0.05);28 d病死率明显低于常规对照组[13.0%(3/23)比40.9%(9/22),P<0.05].治疗72 h后,两组急性生理学与慢性健康状况评分系统Ⅱ(APACHEⅡ)评分(分)均明显下降,且联合CBP组下降程度优于常规对照组(3.96±4.07比1.68±2.43,P<0.05).常规对照组治疗前后APC、sICAM-1及vWF均无明显变化.联合CBP组APC在治疗72 h出现增高,sICAM-1在治疗24 h后、vWF在治疗72 h均较治疗前明显下降,且72 h时APC(μg/L)和vWF(mg/L)与常规对照组比较差异有统计学意义(15.12±7.57比10.01±5.83;1.58±0.73比2.64±1.34,P<0.05和P<0.01).所有死亡患者(12例)治疗前后APC、sICAM-1及vWF均无明显变化.存活组患者(33例)治疗72 h APC浓度(μg/L)较治疗前升高(13.55±7.11比10.37±7.60,P<0.01);sICAM-1(μg/L)及vWF(mg/L)均低于死亡组患者(61.03±45.58比104.64±71.08;1.88±1.21比2.70±0.95,均P<0.05).结论 CBP治疗能改善严重脓毒症患者受损的内皮细胞功能,减轻病情的严重程度,改善预后.

Abstract：

Objective To investigate the effect of continuous blood purification (CBP) in patients with severe sepsis, and to evaluate the change in endothelial cell function in patients with severe sepsis during CBP therapy. Methods According to random principle, 45 patients were divided into control group (n=22) and CBP group (n=23). All patients of both groups received routine treatment according to international guidelines 2008 for management of severe sepsis, but the patients in the CBP group also received continuous veno-venous hemofiltration (CVVH) for 72 hours, the ultrafiltrate volume was 40 ml·kg-1·h-1. Blood gas analysis was done before and 24 hours and 72 hours after CVVH therapy. The activated protein C (APC), soluble intercellular adhesion molecule-1 (sICAM-1) and von Willebrand factor (vWF) were measured. Also the length of stay in intensive care unit (ICU), time of mechanical ventilation, and death rate of patients in 28 days were observed. Results Compared with control group, the length of stay in ICU (days) and length of use of ventilator (days) in CBP group were shorter (9.12±3.07 vs. 11.64±4.82, 5.52±3.48 vs. 8.02±5.25, both P<0.05), and the death rate in 28 days was lower [13.0% (3/23) vs. 40.9% (9/22), P<0.05]. After therapy, patients in CBP group showed more reduction in the APACHEⅡ score compared with control group (3.96±4.07 vs. 1.68±2.43, P<0.05). Patients in control group showed less change in APC, sICAM-1 and vWF. APC in CBP group increased at 72 hours, and sICAM-1 and vWF of CBP group respectively decreased at 24 hours or 72 hours, while the APC (μg/L) and vWF (mg/L) at 72 hours showed significant change compared with that of the control group (15.12±7.57 vs. 10.01±5.83, 1.58±0.73 vs. 2.64±1.34, P<0.05 and P<0.01). In patients who died in 28 days (12 patients) there were little changes in APC, sICAM-1 and vWF, while patients who lived for 28 days (33 patients), showed significantly more reduction in sICAM-1 (μg/L) and vWF (mg/L, 61.03±45.58 vs. 104.64±71.08, 1.88±1.21 vs. 2.70±0.95, both P<0.05). The APC value (μg/L) was increased after treatment in patients who survived for 28 days (13.55±7.11 vs. 10.37±7.60, P<0.01). Conclusion CBP therapy can protect endothelial cell function and ameliorate dysfunction, and it reduces the severity of the severe sepsis as well as improves the outcome of patients with severe sepsis.

Effect of continuous blood purification on endothelial cell function in patients with severe sepsis

Objective To investigate the effect of continuous blood purification (CBP) in patients with severe sepsis, and to evaluate the change in endothelial cell function in patients with severe sepsis during CBP therapy. Methods According to random principle, 45 patients were divided into control group (n=22) and CBP group (n=23). All patients of both groups received routine treatment according to international guidelines 2008 for management of severe sepsis, but the patients in the CBP group also received continuous veno-venous hemofiltration (CVVH) for 72 hours, the ultrafiltrate volume was 40 ml·kg-1·h-1. Blood gas analysis was done before and 24 hours and 72 hours after CVVH therapy. The activated protein C (APC), soluble intercellular adhesion molecule-1 (sICAM-1) and von Willebrand factor (vWF) were measured. Also the length of stay in intensive care unit (ICU), time of mechanical ventilation, and death rate of patients in 28 days were observed. Results Compared with control group, the length of stay in ICU (days) and length of use of ventilator (days) in CBP group were shorter (9.12±3.07 vs. 11.64±4.82, 5.52±3.48 vs. 8.02±5.25, both P<0.05), and the death rate in 28 days was lower [13.0% (3/23) vs. 40.9% (9/22), P<0.05]. After therapy, patients in CBP group showed more reduction in the APACHEⅡ score compared with control group (3.96±4.07 vs. 1.68±2.43, P<0.05). Patients in control group showed less change in APC, sICAM-1 and vWF. APC in CBP group increased at 72 hours, and sICAM-1 and vWF of CBP group respectively decreased at 24 hours or 72 hours, while the APC (μg/L) and vWF (mg/L) at 72 hours showed significant change compared with that of the control group (15.12±7.57 vs. 10.01±5.83, 1.58±0.73 vs. 2.64±1.34, P<0.05 and P<0.01). In patients who died in 28 days (12 patients) there were little changes in APC, sICAM-1 and vWF, while patients who lived for 28 days (33 patients), showed significantly more reduction in sICAM-1 (μg/L) and vWF (mg/L, 61.03±45.58 vs. 104.64±71.08, 1.88±1.21 vs. 2.70±0.95, both P<0.05). The APC value (μg/L) was increased after treatment in patients who survived for 28 days (13.55±7.11 vs. 10.37±7.60, P<0.01). Conclusion CBP therapy can protect endothelial cell function and ameliorate dysfunction, and it reduces the severity of the severe sepsis as well as improves the outcome of patients with severe sepsis.