血浆脑钠素水平与心衰患者左心功能关系的临床研究

为探讨血浆脑钠素(BNP)水平与心力衰竭患者临床心功能变化之间的关系,本文采用IRMA法测定患者血浆BNP水平,同时采用NYHA心功能分级和超声心动图检查评定患者左心功能。结果表明,随着心功能恶化,血浆BNP水平呈上升趋势。各级心功能间均有显著性差异(P<0.05)。经抗心衰药物综合治疗后,BNP水平降低(P<0.01)。BNP水平与左心室射血分数(LVEF)、左心室短轴缩短率(△D%)呈负相关;与左室收缩末内径(LVDS)、左室舒张末内径(LVDd)呈正相关。总之,在患者心力衰竭的进展中其血浆中BNP水平与心衰程度密切相关,测定患者血浆BNP水平是监测心衰程度的有效手段之一。

Clinical Research on Correlation Between BNP and Left Cardiac Function in Patients with Heart Failure

To investigate the correlation between brain natriuretic peptide (BNP) and the cardiac function in patients with heart failure(HF), the plasma level of BNP was determined by IRMA and the left cardiac function parameters were measured on echocardiogram in patients with different grade of HF. The results showed that the plasma level of BNP elevated with the worsening of heart failure (NYHA classification). The plasma levels of BNP were negatively correlated with left ventricular ejection fraction (LVEF) and left ventricular end-diastolic diameter (LVDd). The plasma level of BNP increases significantly along with the severity of HF classified by NYHA, and might be a biochemical parameter for evaluating the left ventricular function.