ABSTRACT
Objective To evaluate the relationship between NT-probrain natriuretic peptide (NT-proBNP) levels and the degree of coronary artery stenosis in elderly patients with non-ST elevation acute coronary syndromes (NST-ACS).Methods The levels of NT-proBNP were determined in 258 elderly patients with NST-ACS divided into 3 quartile groups based on the degree of coronary artery stenosis,and 62 normal controls.And NT-pro BNP were compared among 4 groups.Results The serum levels of NT proBNP were increased in the NST-ACS patients with single,two or three-artery lesion compared with normal controls [(197.3±80.2)ng/L,(381.7±73.5)ng/L,(496.5± 99.8) ng/L vs.(68.2 ± 36.1) ng/L].The level of NT proBNP was enhanced along with increasing severity coronary artery disease (all P＜0.01).And with aging,the NT-proBNP levels were rising [aged＞60-69 years:(182.34±69.13) ng/L; aged≥70-79 years:(302.68±87.51)ng/L; aged≥80 years:(482.09±82.2)ng/L] (all P＜0.01).Conclusions The NT-proBNP level is enhanced along with aging and increasing severity of coronary artery stenosis in elderly NST-ACS patients.