Objective: To evaluate the changes of plasma levels of N-terminal pro-brain natriuretic pepide (NTproBNP) and microalbuminuria (MAU) in patients with heart failure and the correlation between them.
Methods: Ninety-one patients with heart failure were divided into different groups according to different stages of heart failure. Plasma levels of NT-proBNP were measured by microsome enzyme immunoassay (MEIA). Plasma levels of MAU were determined by immune scattering turbidimetry (ICTM). Simultaneously, left ventricular ejection fraction (LVEF) and left ventricular end diastolic diameter (LVEDD) were measured by Doppler echocardiography for all patients. The correlation of NT-proBNP and MAU was evaluated at different stages of heart failure.
Results: The plasma levels of NT-proBNP and MAU increased with the severity of heart failure. There was a high correlation between NT-proBNP and MAU (r = 0.885, p < 0.001).
Conclusion: Both NT-proBNP and MAU levels were closely associated with the severity of heart failure.