呼吸困难是临床的常见症状。本文通过检测血浆脑钠肽(BNP)水平,探讨其在心原性呼吸困难诊断中的临床价值及最佳界值。1对象与方法1·1对象本院2008年1~12月收治的心原性呼吸困难患者243例,其中男131例、女112例,年龄35~85岁。呼吸困难诊断标准患者主观感觉空气不足,客观表现呼 Dyspnea is a common clinical symptom. In this paper, the level of plasma brain natriuretic peptide (BNP) was measured to explore its clinical value and the best cutoff value in the diagnosis of cardiogenic dyspnea. 1 Subjects and methods 1.1 object Our hospital from January 2008 to December in 243 patients with cardiogenic dyspnea, including 131 males and 112 females, aged 35 to 85 years. Patients with dyspnea standard subjective feeling of air shortage, the objective performance call