中老年脊柱手术病人血清降钙素原、红细胞沉降率水平与术后感染的关系

2022-12-02 07:37曾国华陈荣春吴琼蒋满香
护理研究 2022年22期
关键词:降钙素脊柱预测

曾国华,陈荣春,吴琼,蒋满香

·科研论著·

中老年脊柱手术病人血清降钙素原、红细胞沉降率水平与术后感染的关系

曾国华,陈荣春*,吴琼,蒋满香

赣州市人民医院,江西 341000

:探讨中老年脊柱手术病人血清降钙素原(PCT)、红细胞沉降率(ESR)水平与术后感染的关系。:选取2019年3月—2021年12月在我院行脊柱手术治疗的158例病人作为研究对象,将52例发生脊柱手术后感染的病人划分为感染组,106例未发生脊柱手术后感染的病人划分为非感染组。调查病人一般资料及术后血清PCT、ESR水平。:术后3 d、5 d和7 d时感染组病人PCT、ESR水平均高于非感染组(<0.05),且均为术后3 d时最高[PCT为(7.24±1.57)µg/L,ESR为(62.84±3.69)mm/h]。术后3 d的PCT、ESR联合预测脊柱手术病人术后感染的受试者工作特征曲线下面积为0.905,高于二者单独预测结果(PCT的受试者工作特征曲线下面积为0.854,ESR的受试者工作特征曲线下面积为0.754),均有统计学意义(<0.05)。多因素Logisitic回归分析结果显示,合并糖尿病、术中出血量≥300 mL、术后3 d的PCT≥3.29 µg/L、术后3 d的ESR≥41.65 mm/h是中老年脊柱手术病人术后感染的危险因素(<0.05)。:中老年脊柱手术后感染病人术后PCT、ESR水平呈先上升后下降趋势,术后3 d时达到峰值,联合检测术后3 d的PCT、ESR水平对于预测中老年脊柱手术病人术后感染具有较高价值。

中老年人;脊柱手术;术后感染;降钙素原;红细胞沉降率;预测价值;护理

脊柱手术是临床上治疗脊柱损伤性疾病的有效方法,可重建和修复受损腰椎和椎间盘,但其术后存在感染等并发症发生风险,对手术治疗效果和病人身体康复造成不利影响[1⁃2]。术后感染作为脊柱手术的主要并发症,发生率在12%左右,中老年脊柱手术病人由于身体抵抗力下降等更容易发生术后感染,若不能及早诊断和控制,可诱发脓毒血症、多脏器功能不全等,严重危及病人生命[3⁃4]。病原菌培养是术后感染诊断的“金标准”,但该法诊断耗时较长且操作过程复杂,存在滞后性,临床上亟需寻找能准确、方便诊断脊柱手术后感染的早期指标。降钙素原(procalcitonin,PCT)是在机体感染后血清水平急剧增高的一种炎症因子,可反映感染部位的感染严重程度[5⁃6];红细胞沉降率(erythrocyte sedimentation rate,ESR)是骨科手术病人术后感染较为常用的炎症指标,机体出现细菌感染、炎症时水平明显升高[7⁃8],其单独诊断术后感染的准确度不高。已有研究显示,血清PCT和ESR的差异性变化与中老年脊柱病人术后感染进程密切相关,对早期诊断和预防评估脊柱疾病术后感染具有重要临床价值[9⁃10]。本研究主要探讨中老年脊柱手术后病人体内PCT、ESR变化情况及其与术后感染的关系,以期为中老年脊柱手术病人术后感染的早期诊断提供理论参考,现报道如下。

1 对象与方法

1.1研究对象回顾性选取2019年3月—2021年12月在我院行脊柱手术治疗的158例病人作为研究对象。纳入标准:①患有椎间盘突出症、椎体骨折等符合脊柱手术指征的病人;②年龄>45岁的病人;③首次接受脊柱手术治疗的病人;④术前未出现感染性疾病的病人;⑤术后接受PCT和ESR检测的病人;⑥临床资料完整的病人。排除标准:①合并严重肝肾功能障碍、心脑血管疾病的病人;②有恶性肿瘤、免疫功能缺陷疾病、凝血功能障碍的病人;③合并精神疾病、痴呆病人;④术后感染诊断前1周使用激素类药物或抗生素治疗的病人。纳入的158例病人中,男72例,女86例;年龄46~67(56.34±5.28)岁;手术部位:胸段76例,胸腰段82例;手术入路:前路54例,后路104例。参照我国卫生和计划生育委员会制定的医院感染诊断标准[11]诊断术后感染:①切口有红、肿、热、痛,或有脓性分泌物;②临床医师诊断的切口感染;③临床诊断基础上细菌培养阳性。将52例发生脊柱手术后感染的病人划分为感染组,106例未发生脊柱手术后感染的病人划分为非感染组。本研究已通过我院医学伦理委员会批准。

1.2调查内容

1.2.1一般资料包括病人年龄、性别、体质指数(BMI)、合并糖尿病、手术入路、骨质疏松症、手术时间、术中出血量、术后3 d的PCT水平、术后3 d的ESR水平。

1.2.2血清PCT、ESR检测于病人术后1 d、3 d、5 d和7 d时采集病人清晨空腹肘静脉血,经离心后取上清液,采用日立7600型全自动生化分析仪检测血清PCT水平,检测方法为电化学发光法。同时,采集病人清晨空腹肘静脉血,采用魏氏法自动血沉测定仪测定ESR水平。

1.3统计学方法采用SPSS 20.0软件对数据进行分析,正态分布的定量资料以均数±标准差(±)表示,组间比较采用重复测量方差分析、检验;定性资料以频数及百分比(%)表示,组间比较采用2检验;多因素分析采用Logistic回归模型,入=0.05,出=0.10;采用受试者工作特征(ROC)曲线分析PCT、ESR对中老年脊柱手术病人术后感染的预测价值,ROC曲线下面积(AUC)比较采用检验,以<0.05为差异有统计学意义。

2 结果

2.1感染组与非感染组病人脊柱手术后PCT水平比较(见表1)

表1 感染组与非感染组病人脊柱手术后PCT水平比较(x±s)单位:µg/L

注:重复测量方差分析结果显示,组间=0.61,=0.654;时间=3.38,=0.094;交互=9.61,<0.001。与同组术后1 d时比较,①<0.05。

2.2感染组与非感染组病人脊柱手术后ESR水平比较(见表2)

表2 感染组与非感染组病人脊柱手术后ESR水平比较(x±s)单位:mm/h

注:重复测量方差分析结果显示,组间=2.54,=0.165;时间=3.12,=0.095;交互=15.32,<0.001。与同组术后1 d时比较,①<0.05。

2.3PCT、ESR对脊柱手术病人术后感染的预测价值术后3 d时感染组和非感染组病人PCT、ESR水平存在差异,采用ROC分析术后3 d的PCT、ESR水平对脊柱手术病人术后感染的早期预测价值,结果显示,术后3 d的PCT、ESR联合预测脊柱手术病人术后感染的AUC为0.905,高于二者单独预测结果(AUC分别为0.854和0.754);且PCT、ESR单独预测脊柱手术病人术后感染的截断值分别为3.29 µg/L和41.65 mm/h。见图1、表3。

图1 术后3 d时PCT、ESR预测脊柱手术病人术后感染的ROC曲线

表3 术后3 d时PCT、ESR预测脊柱手术病人术后感染的AUC值及其检验

2.4中老年脊柱手术病人术后感染影响因素的单因素分析(见表4)

表4 中老年脊柱手术病人术后感染影响因素的单因素分析单位:例(%)

2.5中老年脊柱手术病人术后感染影响因素的多因素Logisitic回归分析以中老年脊柱手术病人是否发生术后感染为因变量(未感染=0,感染=1),以单因素分析中差异有统计学意义的6个变量为自变量,对自变量年龄(<50岁=0,≥50岁=1)、合并糖尿病(否=0,是=1)、手术时间(<3 h=0,≥3 h=1)、术中出血量(<300 mL=0,≥300 mL=1)、术后3 d的PCT水平(<3.29 µg/L=0,≥3.29 µg/L=1)、术后3 d的ESR水平(<41.65 mm/h=0,≥41.65 mm/h=1)进行赋值,然后进行多因素Logisitic回归分析,结果显示:合并糖尿病、术中出血量≥300 mL、术后3 d的PCT≥3.29 µg/L、术后3 d的ESR≥41.65 mm/h是中老年脊柱手术病人术后感染的危险因素。见表5。

表5 中老年脊柱手术病人术后感染影响因素的多因素Logisitic回归分析

3 讨论

目前,随着脊柱外科手术技术的进步和发展,脊柱手术治疗范围和效果均有了长足发展,但术后感染仍是困扰骨科医师的难题。术后感染是脊柱手术后最常见的一种并发症,影响病人术后康复进程,导致住院时间延长,医疗费用增加,手术治疗效果降低[12⁃14]。分析脊柱手术病人发生术后感染的影响因素并寻找可靠的早期预测指标对降低脊柱手术后感染具有重要意义。已有研究表明,脊柱疾病手术后病人PCT、ESR等生物标志物水平与感染程度具有相关性,可用于脊柱手术病人发生术后感染的早期诊断[15⁃16]。本研究主要探讨PCT、ESR联合检测在中老年脊柱手术后感染中的预测价值,分析二者与术后感染的相关性,结果显示,术后3 d、5 d和7 d时感染组与非感染组病人PCT、ESR水平均与术后1 d时存在差异,术后病人PCT、ESR水平均呈先上升后下降的趋势,在术后3 d时达到峰值;且术后3 d、5 d和7 d时感染组病人PCT、ESR水平均高于非感染组,可见脊柱手术后感染病人术后PCT、ESR水平更高;此外,ROC曲线分析结果显示,术后3 d的PCT、ESR联合预测脊柱手术病人术后感染的AUC值高于二者单独预测结果,可见术后3 d联合检测PCT、ESR对中老年脊柱手术病人术后感染的预测价值更高,可用于术后感染的早期预测。PCT是血清降钙素的前肽物质,在细菌感染2~4 h血清浓度会出现明显增高,12~48 h达到峰值,可反映细菌感染的严重程度[17⁃18]。PCT在非感染性炎症、病毒感染时血清水平不升高,当出现全身炎症、细菌感染时,血清水平明显上升,其在诊断全身性细菌感染方面具有较高的敏感度和特异度,与白细胞计数、C反应蛋白、白介素⁃6等炎症因子相比更具有临床实用价值[17]。这可能是由于当发生细菌感染后,病人体内细菌内毒素可诱导机体各组织和多种细胞类型产生并释放PCT进入血液循环系统,使血清PCT水平呈高表达[19⁃21]。ESR是指红细胞在一定条件下沉降的速度,在机体发生细菌感染、炎症时水平明显升高,可一定程度上反映脊柱手术病人术后感染情况。当机体发生细菌感染或组织损伤等病理变化时,红细胞会相互重叠以减少血浆带来的阻力,致使ESR上升,且病人感染状况越严重,ESR增加速度越明显[22⁃23]。但ESR水平升高速度较缓,与PCT相比,其对脊柱手术病人术后感染的早期诊断效能稍低。

脊柱手术后发生感染的原因较多且复杂,其影响因素涉及病人自身免疫状态、手术操作水平、术后管理等。本研究中老年脊柱手术后感染的多因素回归分析结果显示,合并糖尿病、术中出血量≥300 mL、术后3 d的PCT≥3.29 µg/L、术后3 d的ESR≥41.65 mm/h是中老年脊柱手术病人术后感染的危险因素。合并糖尿病对脊柱手术病人术后感染的影响主要与病人较高的血糖浓度以及自身免疫系统紊乱、免疫功能抑制状态有关,增加了病人术后感染风险[24]。术中出血量较大可增加病人机体衰弱程度及术后感染风险。当术中出血量≥300 mL时,病人可出现局部血流量供应不足,导致术后伤口愈合迟缓,术后感染率增高[25⁃26]。术后3 d的PCT≥3.29 µg/L、ESR≥41.65 mm/h提示病人机体存在PCT、ESR高表达,可增加病人术后感染的可能性,并进一步加重病情。因此,临床上应注意筛查高风险人群,通过术后联合检测PCT、ESR水平预测病人术后感染风险,并制定相应预防和控制措施,降低术后感染发生率。

总之,中老年脊柱手术后感染病人术后PCT、ESR水平呈先上升后下降趋势,术后3 d时达到峰值,联合检测术后3 d时的PCT、ESR水平对临床预测中老年脊柱手术病人术后感染具有较高价值。

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Relationship between serum level of procalcitonin,erythrocyte sedimentation rate and postoperative infection among middle⁃aged and elderly patients after spinal surgery

ZENGGuohua,CHENRongchun,WUQiong,JIANGManxiang

Ganzhou People's Hospital,Jiangxi 341000 China

:To explore between serum level of procalcitonin(PCT),erythrocyte sedimentation rate(ESR) and postoperative infection among middle⁃aged and elderly patients after spinal surgery.:158 patients who underwent spinal surgery in our hospital were selected as study subjects from March 2019 to December 2021.52 patients with infection after spinal surgery were divided into infection group,while 106 patients without infection after spinal surgery were divided into non⁃infection group.General information of patients and serum level of PCT,ESR after operation were investigated.:The level of PCT and ESR in infected group were higher than those in non⁃infected group at 3 days,5 days and 7 days after operation(<0.05),and they were the highest at 3 days after operation[PCT was (7.24±1.57)µg/L,ESR was (62.84±3.69)mm/h].The area under the receiver operator characteristic curve of combined prediction with PCT and ESR at 3 days after surgery for postoperative infection among patients undergoing spinal surgery was 0.905,which was higher than that predicted by single index with PCT and ESR(area under the receiver operator characteristic curve of PCT was 0.854,area under the receiver operator characteristic curve of ESR was 0.754),and all had statistical significance(<0.05).Multivariate Logistic regression analysis showed that diabetes,intraoperative blood loss≥300 mL,PCT level≥3.29 µg/L at 3 days after surgery,and ESR level≥41.65 mm/h at 3 days after surgery were risk factors of postoperative infection among middle⁃aged and elderly patients after spinal surgery(<0.05).:The level of PCT and ESR among middle-aged and elderly patients with postoperative infection after spinal surgery shows a trend of rising first and then falling,and reach peak value at 3 days after surgery.The combined detection with PCT and ESR at 3 days after surgery have high value in predicting postoperative infection among middle⁃aged and elderly patients after spinal surgery

middle⁃aged and elderly;spinal surgery;postoperative infection;procalcitonin;erythrocyte sedimentation rate;predictive value;nursing

CHEN Rongchun,E⁃mail:chenrongchun8373@163.com

10.12102/j.issn.1009-6493.2022.22.014

曾国华,副主任护师,本科

陈荣春,E⁃mail:chenrongchun8373@163.com

曾国华,陈荣春,吴琼,等.中老年脊柱手术病人血清降钙素原、红细胞沉降率水平与术后感染的关系[J].护理研究,2022,36(22):4025⁃4029.

(收稿日期:2022-03-15;修回日期:2022-10-29)

(本文编辑 陈琼)

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