病毒性脑炎及化脓性脑膜炎患儿血清血管内皮细胞钙黏蛋白降钙素原的变化及意义

目的探讨血管内皮细胞钙黏蛋白(VE-cadherin)、血清降钙素原(PCT)在病毒性脑炎、化脓性脑膜炎患儿中的临床诊断价值。方法选择病毒性脑炎患儿62例(病脑组),化脓性脑膜炎患儿40例(化脑组)作为研究对象,无热惊厥非感染患儿40例作为对照组。采用酶联免疫吸附法(ELISA法)测定血清VE-cadherin、PCT浓度。结果 3组血清VE-cadherin、PCT水平比较,差异有统计学意义(P0.01)。化脑组血清VE-cadherin水平高于对照组、病脑组(P0.01),病脑组高于对照组(P0.01)。化脑组血清PCT水平高于对照组和病脑组(P0.01),而病脑组PCT水平较对照组差异无统计学意义(P0.01)。病脑组VE-cadherin异常升高率高于PCT,差异有统计学意义(P0.01);化脑组血清VE-cadherin异常升高率为82.5%,PCT异常升高率为100%,两者比较差异有统计学意义(P0.05)。2组间比较,化脑组血清VE-cadherin异常升高率差异无统计学意义(P0.05);血清PCT异常升高率高于病脑组(P0.05)。病脑组血清VE-cadherin与CSF清蛋白呈正相关(P0.05),血清PCT水平与血WBC、CRP、CSF指标均无相关性(P0.05),血清VE-cadherin与PCT水平无相关性(P0.05);化脑组血清VE-cadherin、PCT浓度与血WBC、CRP、CSF清蛋白、CSFWBC均呈正相关(P0.05),血清VE-cadherin和PCT水平呈正相关(P0.05)。结论检测血清VE-cadherin、PCT浓度对病毒性脑炎、化脓性脑膜炎的诊断和鉴别诊断具有重要的临床意义。     

血清PCT CRP及TNF-α检测对小儿脑膜炎的鉴别诊断价值

目的探讨血清PCT、CRP及TNF-α检测对小儿脑膜炎的鉴别诊断价值。方法回顾性分析32例细菌性脑膜炎及30例病毒性脑膜炎患儿的临床资料,选择30例健康儿童纳入对照组,比较3组研究对象血清PCT、CRP及TNF-α的差异。结果细菌性脑膜炎组患儿血清PCT、CRP及TNF-α均较病毒性脑膜炎组、对照组明显升高,差异有统计学意义(P0.05);PCT在病毒性脑膜炎组及对照组患儿间比较差异无统计学意义(P0.05);血清CRP、TNF-α在病毒性脑膜炎组明显高于对照组,差异有统计学意义(P0.05)。结论血清PCT水平可作为早期诊断及鉴别诊断小儿细菌性脑膜炎、病毒性脑膜炎的一个敏感指标,联合检测PCT与CRP、TNF-α则更具临床价值。     

降钙素原在不同病原体感染脑膜炎中的临床价值

目的分析降钙素原(procalcitonin,PCT)在不同病原体感染脑膜炎中的临床价值。方法 103例急性脑膜炎患者在抗生素治疗前行腰穿检查,根据临床表现和脑脊液细胞学检查结果分成细菌性脑膜炎组和病毒性脑炎组。PCT、外周血CRP和血常规白细胞计数在入院和治疗后分别测定,采用化学发光免疫分析法检测103例急性脑膜炎患儿血清PCT及脑脊液PCT。结果治疗前细菌性脑膜炎组患者血清PCT浓度(15.36±7.25)ng/mL,脑脊液PCT浓度(0.91±0.32)ng/mL,病毒性脑膜炎组患者血清PCT浓度(0.88±0.42)ng/mL,脑脊液PCT浓度(0.23±0.11)ng/mL,2组比较差异均有统计学意义(P0.05)。经抗生素治疗后细菌性脑膜炎组患儿血清PCT浓度(6.78±3.45)ng/mL,明显低于治疗前,差异有统计学意义(P0.05)。结论降钙素原对鉴别细菌性脑膜炎和病毒性脑膜炎具有重要的临床价值,同时也可作为细菌性脑膜炎的疗效指标。     

联合检测血清多项指标对小儿中枢神经系统感染的诊断价值

目的评价血清降钙素原(procalcitonin,PCT)、C反应蛋白(C-reactive protein,CRP)及乳酸脱氢酶(lactate dehydrogenase,LDH)对小儿中枢神经系统感染的诊断价值。方法将113例中枢神经系统感染患儿根据病原菌不同,分为化脓性脑膜炎患儿51例(细菌组)和病毒性脑炎(脑膜炎)62例(病毒组),检测血清PCT、CRP及LDH指标阳性率,并对单一和联合检测结果进行评价。结果细菌组PCT(42例,82.35%)、CRP(40例,78.43%)及LDH(39例,76.47%)阳性率均高于对照组,差异有统计学意义(P0.05);PCT、CRP及LDH联合检测的诊断价值最高,灵敏度92.16%,特异度83.87%,约登指数0.790 6,阳性预测值82.46%,阴性预测值92.86%。结论血清PCT、CRP及LDH在儿童化脓性脑炎中的阳性率较高,且联合检测三种指标对于小儿中枢神经系统感染的鉴别诊断具有较高的应用价值。     

联合检测降钙素原和C反应蛋白诊断小儿中枢神经系统感染

降钙素原(procalcitonin,PCT)是降钙素的前肽,是鉴别全身细菌感染和病毒感染的敏感指标[1]。C反应蛋(C-reactive protein,CRP)属急性时相反应蛋白,对于鉴别颅内感染性疾病有重要意义。本研究通过检测化脓性脑膜炎及病毒性脑炎患儿血清PCT和CRP水平,探讨其在儿童化脓性脑膜炎及病毒性脑炎鉴别诊断中的价值。     

脑脊液降钙素、超敏C反应蛋白、神经元特异性烯醇化酶水平在脑膜炎预后预测及感染类型鉴别中的作用

目的 探讨脑脊液降钙素(PCT)、超敏C反应蛋白(hs-CRP)、神经元特异性烯醇化酶(NSE)水平在脑膜炎感染类型鉴别和临床预后预测中的价值。方法 选取2016年1月至2019年年12月期间在该院确诊并治疗的123例脑膜炎为研究病例。所有病例入院确诊为脑膜炎后即进行气道通畅、监测深静脉的静脉压、血氧饱和度检测、液体循环复苏等常规治疗。完善脑脊液生化检查确定后,化脓性感染病例给予抗菌药物治疗;病毒性感染病例给予抗病毒治疗。于治疗前对脑脊液PCT、hs-CRP、NSE水平进行检测,观察病毒性病例与化脓性病例、预后良好病例与预后不佳病例之间脑脊液PCT、hs-CRP、NSE的表达差异,并分析脑脊液PCT、hs-CRP、NSE联合应用在病毒性脑膜炎与化脓性脑膜炎鉴别及其在临床预后预测中的价值。结果 病毒性脑膜炎病例的脑脊液PCT、hs-CRP、NSE水平低于化脓性脑膜炎病例,差异有统计学意义(P<0.05)。脑脊液PCT、hs-CRP、NSE联合应用鉴别病毒性与化脓性脑膜炎的敏感性(84.18%)、特异性(86.19%)、准确性(83.04%)高于单纯脑脊液PCT、单纯脑脊液hs-CRP、单纯脑脊液NSE。预后良好病例的脑脊液PCT、hs-CRP、NSE水平低于预后不佳患儿,差异有统计学意义(P<0.05)。脑脊液PCT、hs-CRP、NSE联合预测临床预后的敏感性(83.93%)、特异性(85.83%)、准确性(84.20%)高于单纯脑脊液PCT、单纯脑脊液hs-CRP、单纯脑脊液NSE。结论 脑脊液PCT、hs-CRP、NSE联合应用在病毒性脑膜炎与化脓性脑膜炎鉴别和临床预后预测中均具有较高的临床价值,有望作为脑膜炎临床诊疗的指导性指标。     

脑脊液降钙素原及C反应蛋白的检测对颅脑疾病的诊断价值

目的 探讨脑脊液降钙素原(Procalcitonin,PCT)及C反应蛋白(C-reactiveprotein,CRP)对颅脑疾病的诊断价值。方法 收集安阳市人民医院2015-06—2016-06收治的78例颅脑损伤患者为观察组,并选取同时段的健康体检者78例为对照组,通过酶联免疫法(ELISA法)检测2组脑脊液PCT、CRP含量,分析颅脑损伤患者脑脊液PCT、CRP水平与损伤程度及预后的关系。结果 观察组PCT(11.30±1.25)μg/L、CRP(8.90±0.38)mg/L,较对照组的PCT(3.09±0.65)μg/L、(1.20±0.20)mg/L均明显提高,差异有统计学意义(P0.01);将GCS评分方法与影像学检查相结合,观察组轻度29例,中度32例,重度17例;PCT、CR含量提高,颅脑损伤程度更为严重,颅脑损伤脑脊液内PCT、CRP水平与发病程度具有正相关性(r0,P0.05);病毒性脑炎组、细菌性脑膜炎组、结核性脑膜炎组、脑出血组PCT对比均无显著差异(P0.05)。脑出血组CRP水平与其他3组对比差异均有统计学意义(P0.05);细菌性脑膜炎组CRP水平与病毒性脑炎组、结核性脑膜炎组对比,差异均有统计学意义(P0.05)。结论 PCT与CRP对颅脑损伤具有一定的诊断价值,病情越严重,PCT、CRP水平越高,脑脊液PCT、CRP水平与颅脑疾病发病程度具有正相关性,但降钙素原在常见颅脑疾病中的脑脊液含量并无显著意义。     

髓鞘碱性蛋白在中枢神经系统感染时的定量测定及意义

用简易的髓鞘碱性蛋白(MBP)酶联免疫吸附定量测定(ELISA)法对40例中枢神经系统感染患儿进行检测,其中病毒性脑炎15例,脑膜脑炎12例,化脓性脑膜炎13例,同时与对照组(无神经系统疾病)40例相比。结果显示:病毒性脑炎(脑膜脑炎)组、化脓性脑膜炎组血清MBP含量均较对照组高,有显著性差异(P<0.001),病毒性脑炎组亦比化脓性脑膜炎组高,差异显著(P<0.01),且血清MBP的含量与病情及病损范围呈正相关。     

脑脊液和血降钙素原联合检测在颅内感染患者中的临床价值

目的观察脑脊液降钙素原(PCT)和血降钙素原在不同颅内感染患者中的表达。方法收集郑州大学第一附属医院神经内科2016-09—2017-09收治的59例急性颅内感染患者的临床资料,化脓性脑膜炎29例,病毒性脑膜炎30例,收集脑脊液和血液样本,检测脑脊液降钙素原和血降钙素原进行统计分析。结果化脓性脑膜炎组脑脊液PCT(1.10±1.36)ng/mL,血PCT(1.34±2.67)ng/mL;病毒性脑膜炎组脑脊液PCT(0.23±0.44)ng/mL,血PCT(0.43±1.32)ng/mL,差异有统计学意义(P0.05)。依据ROC曲线,以脑脊液PCT浓度≥0.24 ng/mL、血PCT浓度≥0.17 ng/mL为阳性阈值,脑脊液PCT、血清PCT对颅内感染诊断的敏感度分别为76%、79%,特异性分别为83%、80%。并联试验显示脑脊液和血清PCT联合检测诊断颅内感染的灵敏度89%、特异度70%。结论脑脊液和血PCT在颅内感染的诊断中均有意义,临床价值更大。     

血清降钙素原（PCT）动态监测在儿童颅内感染中的应用研究

目的探讨血清降钙素原动态监测在儿童颅内感染中的应用价值。方法回顾性分析儿童中枢神经系统感染患儿56例,根据感染病原体分为病毒性脑膜炎（32例）和化脓性脑膜炎（26例）,动态检测并比较两组患儿血清PCT值。结果治疗早期化脓性脑膜炎组的PCT动态监测水平显著高于病毒性脑膜炎组（P〈0．05）,治疗后期两组无显著性差异（P〉O．05）。结论血清降钙素原动态监测对区分儿童化脓性脑膜炎和病毒性脑膜炎具有重要临床价值。     

血清降钙素原在开颅术后颅内感染早期诊断中的价值

目的 探讨血清降钙素原（PCT）在早期诊断开颅术后颅内感染中的应用价值。方法 2013年1月至2014年6月行择期开颅手术965例,术前1 d,术后3,7 d采集静脉血检测血清PCT,C反应蛋白（CRP）,以及血常规进行白细胞计数。依据我国卫生部2001年发布的《医院感染诊断标准（试行）》做出颅内感染诊断,并全部得到细菌学检查确诊。结果 965中,确诊颅内感染64例（感染组）,未发现颅内感染901例（无感染组）。感染组术后7 d血清PCT,血清CRP,外周血白细胞数量及心率均较术前明显升高（P<0.05）。非感染组术后7 d血清CRP和心率较术前明显升高（P<0.05）,血清PCT和外周血白细胞数量较术前略有升高,但无统计学差异（P>0.05）。术后7 d,感染组血清PCT和外周血白细胞数量明显高于对照组（P<0.05）,而血清CRT和心率与对照组无统计学差异（P>0.05）。术后7 d诊断开颅术后颅内感染的灵敏度和特异度:血清PCT分别为95.31%和91.23%;血清CRP分别为100%和59.93%;外周血白细胞数量分别为87.50%和67.04%;心率分别为85.94%和38.85%;血清PCT,血清CRP,外周血白细胞数量,心率的尤登指数分别为0.87,0.60,0.55,0.25。结论 血清PCT在开颅术后早期诊断颅内感染的特异性和敏感性均较高,临床上可根据血清PCT的变化指导治疗及抗生素应用。     

儿童细菌性脑膜炎与病毒性脑炎氧化应激水平的变化及意义

目的观察儿童细菌性脑膜炎与病毒性脑炎氧化应激水平的变化。方法选取病毒性脑炎患儿20例,细菌性脑膜炎20例,细菌性脑膜炎患儿按临床评分分为重症组及轻症组。选取20例无中枢神经系统感染儿童为对照组。于治疗前及治疗10 d后测定脑脊液丙二醛(MDA)及超氧化物歧化酶(SOD)水平。结果治疗前细菌性脑膜炎患儿脑脊液中SOD水平明显低于对照组与病毒性脑炎患儿,治疗后SOD水平较治疗前增加,但仍低于对照组,且SOD水平与疾病严重程度相关,重症患儿SOD水平较轻症患儿降低。细菌性脑膜炎患儿脑脊液中MDA水平明显高于对照组与病毒性脑炎患儿,治疗后MDA水平较治疗前降低,但仍高于对照组,且MDA水平与疾病严重程度相关,重症患儿MDA水平较轻症患儿增高。病毒性脑炎患儿脑脊液SOD、MDA水平与对照组比较,差异无统计学意义(P>0.05)。结论细菌性脑膜炎患儿存在氧化应激,脑脊液SOD与MDA水平有助于细菌性脑膜炎的早期诊断及病情严重程度的判定。     

小儿化脓性脑膜炎脑脊液中HBP和VE-cadherin的水平变化及其对预后的预测价值

目的 探讨小儿化脓性脑膜炎脑脊液肝素结合蛋白(Heparin-binding protein,HBP)和血管内皮细胞钙黏蛋白(Vascular endothelial-cadherin,VE-cadherin)的水平变化及其对预后的预测价值。方法 选取2019年2月-2021年本院收治的化脓性脑膜炎患儿106例[(Purulent meningitis,PM)组]和病毒性脑炎患儿75例[(Vascular endothelial,VE)组],同时选取60例在本院就诊的非感染性疾病患儿作为对照组; 比较3组患儿脑脊液HBP,VE-cadherin水平变化; 将PM组患儿依据出院时格拉斯哥预后评分(Glasgow outcome scale,GOS)标准分为预后良好组和预后不良组,对比预后良好组和预后不良组患儿脑脊液HBP,VE-cadherin水平以及其他可能的影响因素; 采用Logistic回归分析法明确影响化脓性脑膜炎患儿预后不良的危险因素; 绘制受试者工作特征(ROC)曲线,分析脑脊液HBP,VE-cadherin水平对化脓性脑膜炎患儿预后不良的预测价值。结果 入院第1 d PM组、VE组患儿脑脊液HBP,VE-cadherin水平均高于对照组(P<0.05); PM组患儿脑脊液HBP,VE-cadherin水平均高于VE组(P<0.05)。治疗后PM组与VE组患儿脑脊液HBP,VE-cadherin水平均低于入院第1 d(P<0.05),但2组治疗7 d后比较无明显差异(P>0.05)。单因素分析显示,预后不良组休克、意识障碍、脑脊液细菌培养阳性的占比、脑脊液白细胞计数(White blood cell,WBC)、C-反应蛋白(C-reactive protein,CRP)、降钙素原(Procalcitonin,PCT)、HBP(入院第1 d与治疗7 d后)、VE-cadherin(入院第1 d与治疗7 d后)水平高于预后良好组(P<0.05)。经Logistic回归分析显示,休克、意识障碍、HBP(入院第1 d与治疗7 d后)、VE-cadherin(入院第1 d与治疗7 d后)水平均是化脓性脑膜炎患儿预后不良的危险因素(P<0.05)。受试者工作特征(Receiver operating characteristic,ROC)曲线分析显示,入院第1 d脑脊液HBP联合VE-cadherin水平预测化脓性脑膜炎患儿预后不良的灵敏度、准确度、曲线下面积(Areaunder the curve,AUC)分别为93.57%、92.16%、0.915,均高于脑脊液HBP,VE-cadherin单独预测; 治疗7 d后脑脊液HBP联合VE-cadherin水平预测化脓性脑膜炎患儿预后不良的灵敏度、准确度、曲线下面积(AUC)分别为96.89%、95.71%、0.931,均高于脑脊液HBP,VE-cadherin单独预测。结论 在化脓性脑膜炎患儿中脑脊液HBP,VE-cadherin水平异常升高,且是导致化脓性脑膜炎患儿预后不良的危险因素,对小儿化脓性脑膜炎的预后具有较高的预测价值。     

Brief clinical study: Lipid peroxidation and antioxidant status in children with acute purulent meningitis and encephalitis

In this study, lipid peroxidation and antioxidant status were investigated in children with acute bacterial meningitis and encephalitis. The aim was to determine whether there was a possible role of free radicals in meningitis and encephalitis in childhood. Our study included 16 children with acute bacterial meningitis, 13 with encephalitis, and 17 control subjects. Serum malondialdehyde (MDA), reduced glutathione (GSH), vitamin C, vitamin E, beta-carotene, and retinol levels were studied in all subjects within 6 h of admission. There was a statistically significant difference for serum MDA, GSH, and vitamin C between the groups. Serum MDA and vitamin C levels were higher, and serum GSH levels were lower in the study groups compared to the control group. Vitamin C levels were similar in both the encephalitis and control groups, but they were significantly lower in the children with encephalitis than the meningitis group. In conclusion, our study showed that serum MDA and GSH levels were affected in children with both meningitis and encephalitis, but vitamin C level was affected only in children with meningitis. Serum vitamin E, beta-carotene, and retinol levels were not changed in childhood meningitis and encephalitis.     

Evaluation of antioxidant status in children with acute bacterial meningitis and encephalitis

Antioxidant status was investigated in children with acute bacterial meningitis and encephalitis to investigate the possible role of free radicals in children with meningitis and encephalitis. Our study included 16 children with acute bacterial meningitis, 13 with encephalitis, and 17 control subjects. Serum ceruloplasmin, uric acid, albumin, bilirubin superoxide dismutase (SOD), catalase, and glutathione peroxidase (GPx) levels were studied in all subjects within 6 h of admission. There was a statistically significant difference between the groups for all parameters except for serum uric acid. All antioxidant activities except for albumin level were increased in the study groups. Albumin level was higher in the control group than those of meningitis and encephalitis groups. When the values of meningitis and encephalitis were compared, there was a statistically significant difference between the groups for serum SOD, GPx, ceruloplasmin, and albumin. In conclusion, our study showed that serum SOD, GPx, catalase, and ceruloplasmin were higher in children with acute bacterial meningitis and serum SOD, GPx, catalase, ceruloplasmin, and total bilirubin levels were increased in children with encephalitis. These findings suggest that antioxidant status was almost similar in both acute bacterial meningitis and encephalitis conditions in childhood.     

Brief Clinical Report: EVALUATION OF ANTIOXIDANT STATUS IN CHILDREN WITH ACUTE BACTERIAL MENINGITIS AND ENCEPHALITIS

Antioxidant status was investigated in children with acute bacterial meningitis and encephalitis to investigate the possible role of free radicals in children with meningitis and encephalitis. Our study included 16 children with acute bacterial meningitis, 13 with encephalitis, and 17 control subjects. Serum ceruloplasmin, uric acid, albumin, bilirubin superoxide dismutase (SOD), catalase, and glutathione peroxidase (GPx) levels were studied in all subjects within 6 h of admission. There was a statistically significant difference between the groups for all parameters except for serum uric acid. All antioxidant activities except for albumin level were increased in the study groups. Albumin level was higher in the control group than those of meningitis and encephalitis groups. When the values of meningitis and encephalitis were compared, there was a statistically significant difference between the groups for serum SOD, GPx, ceruloplasmin, and albumin. In conclusion, our study showed that serum SOD, GPx, catalase, and ceruloplasmin were higher in children with acute bacterial meningitis and serum SOD, GPx, catalase, ceruloplasmin, and total bilirubin levels were increased in children with encephalitis. These findings suggest that antioxidant status was almost similar in both acute bacterial meningitis and encephalitis conditions in childhood     

联合检测CRP,IL-6,Procalcitonin水平在成人脑膜炎诊断中的应用价值

目的 探讨联合检测C-反应蛋白(CRP)、白介素-6(IL-6)、降钙素原(Procalcitonin)水平在成人脑膜炎诊断中的应用价值。方法 选取病毒性脑膜炎患者30例为病毒组,结核性脑膜炎患者30例为结核组,化脓性脑膜炎患者30例为化脓组; 同时选取体检健康者30例为对照组,检测4组血清中CRP,IL-6,Procalcitonin的表达水平; 用ROC曲线下面积分析CRP,IL-6,Procalcitonin水平对成人脑膜炎的诊断价值。结果 健康人群血清中CRP和IL-6的表达水平均比成人脑膜炎患者低,且在病毒性脑膜炎、结核性脑膜炎和化脓性脑膜炎患者中表达水平有明显差异,血清中Procalcitonin的表达水平在化脓性脑膜炎患者中最高(P<0.05),结核性脑膜炎患者次之(P<0.05),健康人群再次之(P<0.05),病毒性脑膜炎患者中最低(P<0.05)。CRP高表达与成人脑膜炎患者脑脊液中蛋白水平呈正相关(r=0.826,P<0.001); Procalcitonin高表达与成人脑膜炎患者脑脊液中葡萄糖水平呈正相关(r=0.866,P<0.001)。诊断病毒性脑膜炎患者与体检健康者CRP,IL-6,Procalcitonin水平的灵敏度分别为83%、87%、87%,特异度为83%、87%、87%; 诊断结核性脑膜炎患者与体检健康者CRP,IL-6,Procalcitonin水平的灵敏度分别为93%、87%、87%,特异度为67%、73%、87%; 诊断化脓性脑膜炎患者与体检健康者CRP,IL-6,Procalcitonin水平的灵敏度分别为87%、87%、87%,特异度为87%、73%、87%; CRP,IL-6和Procalcitonin水平对成人脑膜炎的联合诊断的灵敏度为88.89%,特异度为83.33%,准确度为87.50%。结论 CRP,IL-6,Procalcitonin水平可作为辅助诊断成人脑膜炎的潜在标志物。     

Serum levels of procalcitonin as a biomarker for differentiating between sepsis and systemic inflammatory response syndrome in the neurological intensive care unit

We explored the value of procalcitonin (PCT) to differentiate sepsis from systemic inflammatory response syndrome (SIRS), and determine sepsis severity in the neurological intensive care unit (NICU). Blood samples were measured for C-reactive protein (CRP) and PCT levels upon NICU admission, on the day of diagnosis of SIRS or sepsis, and at 3 and 7 days after diagnosis. We found that there were significant differences in serum levels of CRP and PCT as well as Glasgow Coma Scale (GCS) score upon admission between the SIRS and sepsis groups (p < 0.05). CRP and white blood cell levels were not significantly different when attempting to differentiate sepsis severity (p > 0.05). Multiple comparisons showed that significant differences in serum PCT levels were observed between sepsis and severe sepsis groups, as well as sepsis and septic shock groups (p < 0.05). We obtained the highest sensitivity and specificity for SIRS and sepsis with cut-off values of 2 ng/mL for PCT, 44 mg/dL for CRP, and 4 for the GCS. There were no differences in CRP and PCT levels between cerebrovascular disease and non-cerebrovascular disease groups (p > 0.05). No differences were found between viral and bacterial meningitis groups (p > 0.05). PCT levels are valuable in discriminating sepsis from SIRS and determining sepsis severity in critically ill patients with neurological disease.     

血清PCT、IL-6、CRP在颅脑损伤术后颅内感染的早期诊治 中的价值

目的 探讨血清降钙素原（PCT）、白介素-6（IL-6）、C-反应蛋白（CRP）对颅脑损伤术后早期颅内感染的诊断价值。方法 选取2016年1月至2018年1月收治的颅脑损伤术后颅内感染23例作为 感染组，同期颅脑损伤术后未出现颅内感染46例作为对照组。感染组给予万古霉素及美罗培南治疗。术后12 h内采取空腹肘静脉血5 ml，采用双抗体夹心免疫化学发光法半定量快速实验测定血清PCT含量 ，采用全自动免疫透视比浊法测定血清CRP含量，采用全自动免疫化学发光法测定血清IL-6含量。感染组给药第1、3、6、9、12天（五次）清晨空腹采取肘静脉血5 ml检测血清PCT、IL-6、CRP。采用受试 者工作特征（ROC）曲线判断各指标对颅内感染的诊断效能。结果 感染组23例中，12例治愈，6例好转，5例无效或加重；感染控制18例，未控制5例。术后12 h内，感染组血清PCT、CRP、IL-6浓度均明显 高于对照组（P<0.05）。感染控制组血清PCT和CRP浓度显著低于未控制组（P<0.05）。血清PCT、CRP、IL-6判断颅内感染最佳截断值分别为0.51 ng/ml、16.25 mg/ml、32.67 pg/ml，敏感性分别为52.2% 、91.3%、91.3%，特异性分别为82.6%、79.4%、87.0%；三者联合判断颅内感染的敏感性为100.0%，特异性为79.3%。结论 血清PCT、IL-6和CRP均有助于早期诊断颅脑损伤术后颅内感染，三者联合检测对 于诊断颅内感染效果更好。