应用最佳顺应性设定呼气末正压的临床研究  被引量:8

Clinical research of using optimal compliance to determine positive end-expiratory pressure

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作  者:徐磊[1] 冯全胜[1] 廉富[1] 邵新华[1] 李智伯[1] 王志勇[1] 李军[1] 

机构地区:[1]天津市第三中心医院重症医学科,300170

出  处:《中国危重病急救医学》2012年第7期393-397,共5页Chinese Critical Care Medicine

基  金:国家重点基础研究发展计划(973)项目(2009CB522702);天津市医药卫生科技基金项目(09KY05)

摘  要:目的以低流速法描记准静态压力-容积曲线(P-V曲线)选择最佳呼气末正压(PEEP)作为对照,观察滴定最佳顺应性方法选择最佳PEEP的临床实用性和安全性。方法选取本院重症监护病房(ICU)2009年11月至2010年12月14例接受机械通气的急性呼吸窘迫综合征(ARDS)患者,分为两组,每组7例;分别使用低流速法描记准静态P~V曲线和滴定最佳顺应性的方法确定最佳PEEP,连续测量3次,比较各组所确定的最佳PEEP值和重复试验的一致性;观察试验前及试验后2.4、6h血流动力学参数、氧合指数(OI)、肺顺应性(C)以及血浆中细胞因子和肺表面活性蛋白D(SP—D)的变化。结果①两组性别、年龄、疾病严重程度等基础状态无明显差异。②准静态P—V曲线和滴定最佳顺应性方法确定的最佳PEEP值(cm H2O,1cm H2O:0.098kPa)无明显差异(11.534±2.07比10.57±0.87,P〉0.05)。但准静态P—V曲线描记的重复性差,3次描记的P—V曲线斜率呈逐渐下降趋势,每次确定的最佳PEEP值呈逐渐升高趋势,第3次与第1次描记比较差异有统计学意义(12.80±1.92比10.00±1.58,P〈0.05);而滴定最佳顺应性的方法重复性好,每次确定的最佳PEEP值无明显差异。③描记准静态P—V曲线后患者的心率(HR,次/min)、体温(℃)、白细胞介素-6(IL-6,ng/L)、肿瘤坏死因子-α(TNF-α,ng/L)、SP—D(μg/L)均呈逐渐升高趋势,平均动脉压(MAP,mmHg,1mmHg=0.133kPa)、连续心排血指数(CCI,L·min^-1·m^-2)、OI(mmHg)及C(ml/cm H2O)均呈下降趋势,均于试验后6h达峰值或谷值,与试验前比较差异有统计学意义(HR:117.34±8.53比93.71±5.38,体温:38.05±0.73比36.99±1.02,IL-6:144.84±23.89比94.73±5.91,TNF-α:151.46±46.00比89.86±13.13,SP—D:33.65±8.66比16.63±5.61,MAPObjective To observe the availability and security of optimal compliance strategy to titrate the optimal positive end-expiratory pressure (PEEP), compared with quasi-static pressure-volume curve (P-V curve) traced by low-flow method. Methods Fourteen patients received mechanical ventilation with acute respiratory distress syndrome (ARDS) admitted in intensive care unit (ICU) of Tianjin Third Central Hospital from November 2009 to December 2010 were divided into two groups (n = 7 ). The quasi-static P-V curve method and the optimal compliance titration were used to set the optimal PEEP respectively, repeated 3 times in a row. The optimal PEEP and the consistency of repeated experiments were compared between groups. The homodynamic parameters, oxygenation index ( OI ), lung compliance ( C ), cytokines and pulmonary surfactant-associated protein D ( SP-D ) concentration in plasma before and 2, 4, and 6 hours after the experiment were observed in each group. Results (1) There were no significant differences in gender, age and severity of disease between two groups. (2)The optimal PEEP (era H2O, 1 cm H2O = 0.098 kPa) had no significant difference between quasi-static P-V curve method group and the optimal compliance titration group (11.53 ± 2.07 vs. 10.57 ± 0.87, P〉0.05 ). The consistency of repeated experiments in quasi-static P-V curve method group was poor, the slope of the quasi-static P-V curve in repeated experiments showed downward tendency. The optimal PEEP was increasing in each measure. There was significant difference between the first and the third time (10.00 ± 1.58 vs. 12.80 ± 1.92, P〈0.05). And the optimal compliance titration method had good reproducibility as the optimal PEEP without significant difference in each measure. (3) After the quasi-static P-V curve traced, the heart rate (HR, bpm), temperature (℃), interleukin-6 (IL-6, ng/L), tumor necrosis factor-α (TNF-α, ng/L), SP-D (μg/L) showed a gradually increasi

关 键 词:最佳呼气末正压 准静态压力-容积曲线 顺应性 滴定法 

分 类 号:R563.8[医药卫生—呼吸系统]

 

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