危重症患者降钙素原和肾损害相关性的临床研究

目的 探讨危重症患者血清降钙素原(PCT)水平和肾损害(RI)之间的相关性.方法 采用前瞻性研究,对60例危重症患者在入院24 h内测定血清PCT水平,并分为异常组(PCT≥0.5μg/L,38例)和正常组(PCT<0.5μg/L,22例),检测血肌酐和血尿素氮的变化,计算PCT预测RI和急性肾功能不全(ARD)的灵敏度、特异度等指标.结果 异常组血肌酐为(188.91±199.48)μmol/L,血尿素氮为(13.03±9.19)mmol/L,明显高于正常组的(67.40±15.35)μmol/L、(6.91±2.06)mmol/L(P<0.01).PCT预测RI的灵敏度为71.79%,特异度为52.38%,预测ARD的灵敏度为91.67%,阴性预测值为95.45%.结论 检测危重症患者血清PCT水平对判断患者RI的严重程度及ARD的发生具有重要参考价值.

Clinical study of relativity between serum procalcitonin level and renal impairment in critically ill patients

Objective To discuss the relativity between serum procalcitonin(PCT) level and renal impairment (RI) in critically ill patients. Methods A perspective study was performed in 60 critically ill patients. They were divided into 2 groups on the serum PCT level within 24 h: abnormal group (PCT ≥ 0.5 μg/L,38 cases) and normal group(PCT < 0.5 μg/L,22 cases). The serum creatinine (SCr) and blood urea nitrogen (BUN) were observed. Acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ ) of the patients were recorded. Calculated the sensitivity and specificity for prediction of RI as well as acute renal dysfunction (ARD). Results SCr (188.91 ± 199.48) μmol/L]and BUN (13.03 ±9.19)mmol/L]in abnormal group were significantly higher than those in normal group (67.40 ± 15.35) μ mol/L and (6.91 ± 2.06) mmol/L](P< 0.01). The sensitivity of PCT forecast RI was 71.79%, and specificity was 52.38%. The sensitivity of PCT forecast ARD was 91.67% , and negative predictive value was 95.45%. Conclusion Serum PCT level has an important value for judgement of RI and ARD in critically ill patients.