心源性呼吸困难

BNP水平100pg/ml但500pg/ml患者需考虑可能为心源性呼吸困难；

When BNP level is between 100pg / ml and 500pg / ml , cardiac dyspnea should be considered ;

劳力可加剧心源性呼吸困难，休息则可部分或完全使之缓解。

Cardiac dyspnea is always worsened by exertion and partly or completely relieved by rest .

目的探讨气急鉴别指数（dyspneadifferentiationindex，DDI）判别肺源性呼吸困难与心源性呼吸困难的优越性。

Objective To explore the advantage of dyspnea differentiation index ( DDI ) for separation of cardiac vs pulmonary dyspnea .

结果BNP水平小于60pg/ml患者基本可诊断为非心源性呼吸困难；

Results When BNP level is less than 60pg / ml , non-candiac dyspnea can be diagnosed ;

结果充血性心力哀竭（CHF）组BNP浓度为（1050.3±75.5）pg/ml，明显高于非心源性呼吸困难组的BNP水平；

Results the levels of serum BNP in CHF group were ( 1050.3 ± 75.5 ) pg / ml , which were much higher than non-cardiac group ;

BNP对心源性呼吸困难鉴别诊断的受试者作业特征曲线（receiveoperatorcharacteristic，ROCcurve）下面积是0.978（P<0.01）；

The area under the receive operator characteristic ( ROC ) curve , which demonstrated the diagnostic utility of BNP in differentiating CHF from pneumonia , was 0.978 ( P < 0.01 ) .

右心衰组TFC值明显高于非心源性呼吸困难组及左心衰组（P<0.05）。

TFC of right heart failure group was significantly higher than that non cardiogenic dyspnoea group and left heart failure group ( P < 0 . 05 ) .

脑钠肽诊断心源性呼吸困难的应用研究

Research on Application of Brain Natriuretic Peptide in Cardiac Dyspnea

心源性呼吸困难是由细支气管壁水肿和肺实质或肺泡水肿所致的肺硬变引起，妨碍气流通行。

Cardiac dy ea results from edema in bronchiolar walls and stiffening of the lung due to parenchymal or alveolar edema , which interfere with airflow .

其中心源性呼吸困难组按照超声心动图检查结果分为单纯舒张功能不全组25例，单纯收缩功能不全组21例，收缩并舒张功能不全组15例；

In cardiac dyspnea group , according to the results of echocardiography , the cases were divided into three groups : pure diastolic heart failure ( 25 cases ), pure systolic heart failure ( 21 cases ) as well as diastolic and systolic heart failure ( 15 cases ) .