Objective To explore the combined detection of B‐type natriuretic peptide (BNP) and glycosylated antigen 125 (CA125) in differential diagnosis of dyspnea .Methods BNP and CA125 were detected and compared among 106 cases with cardiac dyspnea ,56 cases with pulmonary dyspnea and 60 healthy subjects .Results BNP and CA125 levels of dyspnea patients were higher than healthy subjects ,and those of cardiac dyspnea patients were higher than pulmonary dyspnea patients (P<0 .05) .With the ag‐gravation of heart failure ,BNP and CA125 levels gradually increased .Combined detection of BNP and CA125 were with higher diag‐nostic sensitivity and specificity (P<0 .05) .After treatment ,BNP and CA125 levels significantly decreased (P<0 .05) .Conclusion Combined detection of BNP and CA125 could be with high specificity and sensitivity ,helpful for identifying cardiac or pulmonary dyspnea and dynamic observation of the disease .%目的：探讨B型钠尿肽（BNP）、糖链抗原125（CA125）联合检测在呼吸困难病因诊断中的临床价值。方法选择心源性呼吸困难患者106例、肺源性呼吸困难患者56例、健康者60例，在患者入院时检测血浆BNP、CA125水平。另比较心源性呼吸困难患者治疗前后血浆BNP、CA125水平。结果心源性呼吸困难患者BNP、CA125水平高于肺源性呼吸困难患者和健康者，呼吸困难患者明显高于健康者（P＜0．05）；随着心力衰竭病情的加重，BNP与CA125水平逐渐升高；BNP、CA125联合检测对心源性、肺源性呼吸困难的鉴别诊断价值高于单独检测（P＜0．05）；心源性呼吸困难患者治疗前后BNP和CA125水平比较差异有统计学意义（P＜0．05）。结论 BNP和CA125联合检测有较高的特异度和灵敏度，有助于鉴别心源性、肺源性呼吸困难，判断心力衰竭程度、动态观察病情，值得推广应用。
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