降钙素原在早期评估细菌感染严重程度中的应用

目的 探讨血清降钙素原(PCT)在早期评估细菌感染严重程度中的应用价值,并与C反应蛋白(CRP)、白细胞计数(WBC)及体温进行比较,了解其优劣.方法 选取2009年7月至2010年6月我院收治的细菌感染的患者139例,根据美国胸科医师学会和危重病医学会会议(ACCP/SCCM)标准及患者临床表现,将139例患者分为局部感染组(A组,50例)、脓毒血症组(B组,51例)、严重脓毒血症组(C组,21例)及脓毒性休克组(D组,17例),选取同期住院但无感染的患者20例为对照组.入选患者入院治疗前抽血查PCT、CRP及WBC水平、记录体温,治疗5 d后复查PCT水平.结果 感染早期,PCT水平在D组中最高(42.36±48.49)×10-6 g/L,高于其余各感染组(P均＜0.05),C组(4.66±2.46)×10-6g/L高于B组(1.08±0.68)×10-6g/L及A组(0.09±0.05)×10-6g/L(P均＜0.05),各感染组PCT水平均高于对照组(0.05±0.01)×10-6g/L(P均＜0.05);CRP、WBC水平及体温比较差异均无统计学意义(P均＞0.05).治疗5 d后,各感染组PCT水平均下降.结论 PCT水平高低可以在细菌感染早期准确评估感染严重程度,显著优于CRP、WBC及体温.有效治疗后PCT水平下降,有助于监测病情变化.

Abstract：

Objective To explore the value of serum procalcitonin (PCT) for early evaluation of the severity in bacterial infection, and compare it with C-reactive protein(CRP), white blood cell(WBC) and temperature to understand their strengths and weaknesses. Methods A sample of 139 impatients with bacterial infection from July 2009 to June 2010 in our hospital were divided into four groups, including local bacterial infection group(Group A, n = 50), sepsis group(Group B, n = 51), severe sepsis group(Group C, n = 21) and septic shock group (Group D, n = 17) according to ACCP/SCCM consensus conference and the clinical manifestation. Twenty noninfectious patients during the same time were recruited as control(Group E, n = 20)PCT, CRP,WBC and temperature were evaluated in all patients before treatment and PCT were measured 5 days after treatment. Results During the early period of the bacterial infection, PCT was highest in Group D ([42.36±48.49] × 10-6 g/L),which was higher than that of (4.66 ±2.46) × 10-6 g/L in Group C,( 1.08 ± 0. 68) × 10 -6 g/L in Group B and (0. 09 ± 0. 05) × 10 -6 g/L in Group A(Ps ＜ 0. 05), PCT in the four infectious groups were all higher than the control group([0. 05 ± 0. 01 ] × 10-6 g/L)(Ps ＜ 0. 05). No significant difference in CRP between Group D and Group C, neither did between Group C and Group B (Ps ＞0. 05). No significant difference was found in WBC between Group D and Group C,neither did between Group D and Group B (Ps ＞ 0. 05). Temperature in Group D was not significantly different to Group C(P ＞ 0. 05). After 5 days' treatment, PCT decreased in the four infectious groups than before. Conclusion The level of PCT can be used to evaluate the severity of infection during the early period of bacterial infection, which is better than CRP,WBC and temperature. PCT decreases after effective treatment,which can help monitor the patients' condition.

Application of serum procalcitonin for early evaluation of severity in bacterial infection

Objective To explore the value of serum procalcitonin (PCT) for early evaluation of the severity in bacterial infection, and compare it with C-reactive protein(CRP), white blood cell(WBC) and temperature to understand their strengths and weaknesses. Methods A sample of 139 impatients with bacterial infection from July 2009 to June 2010 in our hospital were divided into four groups, including local bacterial infection group(Group A, n = 50), sepsis group(Group B, n = 51), severe sepsis group(Group C, n = 21) and septic shock group (Group D, n = 17) according to ACCP/SCCM consensus conference and the clinical manifestation. Twenty noninfectious patients during the same time were recruited as control(Group E, n = 20)PCT, CRP,WBC and temperature were evaluated in all patients before treatment and PCT were measured 5 days after treatment. Results During the early period of the bacterial infection, PCT was highest in Group D ([42.36±48.49] × 10-6 g/L),which was higher than that of (4.66 ±2.46) × 10-6 g/L in Group C,( 1.08 ± 0. 68) × 10 -6 g/L in Group B and (0. 09 ± 0. 05) × 10 -6 g/L in Group A(Ps ＜ 0. 05), PCT in the four infectious groups were all higher than the control group([0. 05 ± 0. 01 ] × 10-6 g/L)(Ps ＜ 0. 05). No significant difference in CRP between Group D and Group C, neither did between Group C and Group B (Ps ＞0. 05). No significant difference was found in WBC between Group D and Group C,neither did between Group D and Group B (Ps ＞ 0. 05). Temperature in Group D was not significantly different to Group C(P ＞ 0. 05). After 5 days' treatment, PCT decreased in the four infectious groups than before. Conclusion The level of PCT can be used to evaluate the severity of infection during the early period of bacterial infection, which is better than CRP,WBC and temperature. PCT decreases after effective treatment,which can help monitor the patients' condition.