心脏生物标志物联合肺栓塞严重程度指数对急性肺栓塞症诊断及危险分层的研究

目的检测急性肺栓塞（APE）患者血浆中B型钠尿肽（BNP）和肌钙蛋白I（cTnI）的浓度,研究肺栓塞严重程度指数（PESI）、cTnI、BNP对APE诊断及预后的预测价值。方法选取2010年1月-2013年1月确诊的共96例APE患者,同时选取同期非APE对照者50例。对入选者进行肺栓塞严重指数（PESI）评分,据分值大小分为低危组、中危组、高危组;根据cTnI与BNP结果分组为阳性组及阴性组。分析PESI、cTnI和BNP在APE患者诊断与危险分层的预测价值。结果 APE患者中低危、中危与高危各组大面积、次大面积APE构成比随组别增高而升高（P〈0.01）;cTnI阳性组大面积、次大面积APE占82.9%,cTnI阴性组非大面积APE占81.9%;BNP阳性组大面积、次大面积APE占73.3%,BNP阴性组非大面积APE占86.3%。cTnI、BNP阳性组右心功能不全、心源性休克及死亡的发生率明显高于阴性组（P〈0.01）。结论联合检测cTnI、BNP结合PESI评分在APE的诊断和危险分层中具有重要意义。

Research of Cardiac Biomarkers and Pulmonary Embolism Severity Index for the Diagnosis of Acute Pulmonary Embolism and Its Risk Stratification

Objective To investigate diagnostic and prognostic value of pulmonary embolism severity index （PESI）, troponin I （cTnI） and brain natriuretic peptide （BNP） in patients with acute pulmonary embolism （APE）. Methods A total of 96 patients confirmed with APE were collected from January 2010 to January 2013, and 50 cases of non-APE controls were also selected in the same period. According to the PESI scores, patients were divided into low-risk, mid-risk, and highrisk group. According to the results of cTnI and BNP, patients were divided into positive group and negative group. Then, we evaluated the diagnostic and prognostic value of the PESI score, cTnI and BNP for patients with APE. Results For the APE patients, the higher the risk was, the higher the constituent ratio of massive and sub-massive APE was （P 〈 0.01）. In the cTnI positive group, massive and sub-massive APE accounted for 82.9%, and in the cTnI negative group, non-massive APE was up to 81.9%; in the BNP positive group, massive and sub-massive APE accounted for 73.3%, and in the BNP negative group, non-massive APE was up to 86.3%. The patients with positive cTnI and BNP had a higher rate of right ventricular dysfunction, cardiogenic shock and mortality than the negative group （P 〈 0.01）. Conclusion The combined detection of cTnI, BNP and PESI score is important in the diagnosis and risk stratification in APE patients.