血清降钙素原在泌尿系感染并发脓毒血症早期诊断中的应用价值研究
2020-08-13庄雯雯
庄雯雯

【摘要】 目的 探讨血清降钙素原(PCT)在泌尿系感染并发脓毒血症早期诊断中的应用价值。方法 78例确诊为泌尿系感染患者, 根据病理诊断是否并发脓毒血症分为脓毒血症组(32例)和非脓毒血症组(46例)。检测并比较两组患者的血清PCT、超敏C反应蛋白(hs-CRP)、外周血白细胞计数(WBC)水平, 根据受试者工作曲线(ROC)分析比较血清PCT、hs-CRP、外周血WBC检测脓毒血症的敏感度、特异度。结果 脓毒血症组血清PCT、hs-CRP分别为(9.37±3.48)μg/L、(128.59±45.39)mg/L, 均高于非脓毒血症组的(1.06±0.93)μg/L、(101.38±34.93)mg/L, 差异有统计学意义(P<0.05)。两组外周血WBC水平比较差异无统计学意义(P>0.05)。PCT的曲线下面积(AUC)为0.938[95%CI(0.84, 0.96)], hs-CRP和WBC的AUC分别为0.695和0.621;PCT的最佳截断点为3.52 μg/L, 此时的敏感度为87.1%, 特异度为91.7%, hs-CRP、WBC在最佳截断点的敏感度和特异度均<70.0%。结论 PCT对泌尿系感染患者并发脓毒血症有较高的敏感度和特异度, 可作为怀疑泌尿系感染并發脓毒血症时的常规检测指标, 有利于早期诊断。
【关键词】 降钙素原;泌尿系感染;脓毒血症;超敏C反应蛋白
DOI:10.14163/j.cnki.11-5547/r.2020.20.014
【Abstract】 Objective To discuss the value of serum procalcitonin (PCT) in the early diagnosis of urinary tract infection complicated with sepsis. Methods A total of 78 patients with urinary tract infection were divided into sepsis group (32 cases) and non-sepsis group (46 cases) according to pathological diagnosis. The serum PCT, high-sensitivity C-reactive protein (hs-CRP), and peripheral white blood cell (WBC) count of the two groups were detected and compared. The sensitivity and specificity of serum PCT, hs-CRP, and peripheral WBC in detecting sepsis were compared according to the receiver operating curve (ROC). Results The serum PCT and hs-CRP of sepsis group were (9.37±3.48) μg/L and (128.59±45.39) mg/L respectively, which were all higher than those of the non-sepsis group (1.06±0.93) μg/L and (101.38±34.93) mg/L, and the difference was statistically significant (P<0.05). There was no statistically significant difference in peripheral WBC level between the two groups (P>0.05). The area under curve (AUC) of PCT in sepsis group was 0.938 [95%CI(0.84, 0.96)], which were 0.695 and 0.621 of hs-CRP and WBC . The best cut-off point of PCT was 3.52 μg /L. At this time, the sensitivity was 87.1% and the specificity was 91.7%. The sensitivity and specificity of hs-CRP and WBC at the best cut-off point were less than 70.0%. Conclusion PCT has a high sensitivity and specificity to the patients with urinary tract infection complicated with sepsis. It can be used as a routine detection index when suspecting urinary tract infection complicated with sepsis, which is conducive to early diagnosis.
【Key words】 Procalcitonin; Urinary tract infection; Sepsis; Hypersensitive C-reactive protein
泌尿系统感染是一种临床非常多见的疾病, 大多数患者病情较轻, 预后良好。但部分合并有上尿路梗阻、泌尿系统有创操作或手术、长期留置尿管、免疫功能低下或缺陷、糖尿病等的泌尿系感染的患者, 感染容易进展加重, 并发展为脓毒血症, 导致不良预后。由泌尿系感染而导致的脓毒血症亦称为尿源性脓毒血症, 目前有研究表明[1], 约有10%~30%的脓毒血症是由于泌尿系感染所致。尿源性脓毒血症患者病情进展可导致多脏器功能障碍, 甚至脓毒性休克、多脏器功能衰竭, 死亡率可达到20%。尿源性脓毒血症治疗成功的关键是早期诊断[2]。近年来, 相关研究发现血清降钙素原(procalcitonin, PCT)、白细胞计数(white blood cell, WBC)、超敏C反应蛋白(hypersensivity C-reactive protei, hs-CRP)等炎症指标在尿源性脓毒血症的早期诊断以及病情严重程度评估等方面具有明确的临床价值, 其中PCT已经被作为诊断脓毒血症的重要生物学指标广泛应用于临床[3, 4]。……
