高原心脏病心功能指数与B型利钠肽相关研究

目的 通过观察高原心脏病心力衰竭患者心功能综合指数(Tei)和外周血N末端B型利钠肽前体(NT-proBNP)水平,探讨右室Tei指数、NT-proBNP在高原心脏病中的诊断价值.方法 对2008-2010年在解放军第二十二医院心内科住院的34例高原心脏病患者进行超声指标Tei指数和NT-proBNP水平测定,并进行相关性比较.结果 根据超声心动图征象将高原心脏病患者分为A、B两组,A组与健康对照组(C组)相比,肺动脉收缩压[86.6 mm Hg比9.7 mm Hg(1 mum Hg =0.133kPa)]、右室Tei指数(0.90比0.33)均显著增高(P＜0.05);B组C组相比,肺动脉收缩压(57.1比9.72) mm Hg、右室Tei指数(0.78比0.33)显著增高(P＜0.05);A、B两组患者外周血NT-proBNP水平分别为(1246.8±512.6)ng/L、( 637.3±351.3) ng/L,均显著高于C组(98.6±21.7) ng/L水平,P＜0.05.结论 右心室Tei指数和NT-proBNP浓度是反映右心整体功能的较敏感指标,两者对于诊断高原心脏病具有一定的临床意义.

A correlation study of Tei index and N-terminal pro-brain natriuretic peptide in patients with high-altitude heart disease

Objective To explore the diagnostic value of Tei index of right ventricle and serum level of NT-proBNP in patients with high-altitude heart disease (HAHD).Methods Right ventricle Tei index and serum NT-proBN level were calculated and tested in 32 local healthy volunteers and 34 cases of HAHD patients hospitalized in our hospital in Golmud city (2808 meters above sea level) from 2008 to 2010,and a correlation study was conducted thereafter.Results The pulmonary arterial systolic pressure and right ventricle Tei index,elevated significantly in HAHD patients compared with the control group [(86.61 vs 9.72)mm Hg(1 mm Hg=0.133 kPa) and(0.90 vs 0.33)respectively,P＜0.05].Patients diagnosed as mild pulmonary hypertension without alteration in cardiac structure showed higher pulmonary arterial systolic pressure and the Tei index compared with the control group [( 57.1 vs 9.72 )mm Hg and (0.78 vs 0.33 ) respectively,P ＜ 0.05 ].In addition,the level of serum NT-proBNP was significantly higher in HAHD group than that of control group [( 1246.8 ± 512.6) ng/L and (98.6 ± 21.7 ) ng/L respectively,P ＜ O.05 ].Conclusion Right ventricle Tei index and serum NT-proBNP level are sensitive indicators for right ventricular function and thus of favorable clinical significance for the diagnosis of HAHD.