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在分析104例矽肺及矽肺肺心病患者肺功能资料的基础上,筛选出以下六项指标作为矽肺肺心病肺功能辅助诊断指标。即:(1)Vc％<预计值的40％,(2)V1.0％<50％Vc,(3)FEF200—1200<1.20升/秒,(4)FEF25—75％<预计值的15％,(5)MTT>正常预计值的1.6倍,(6)tsD>1.527秒。符合6项中任何一项便可诊断肺心病,而且其敏感性、特异性和诊断准确率均较超声心动图等为高
Based on the analysis of lung function data of 104 patients with silicosis and silicosis and pulmonary heart disease, the following six indicators were screened as the diagnostic indicators of pulmonary function in patients with silicosis and pulmonary heart disease. Namely: (1) Vc% <40% of predicted value, (2) V1.0% <50% Vc, (3) FEF200-1200 <1.20 l / %, (5) MTT> 1.6 times the normal expected value, (6) tsD> 1.527 seconds. In line with any one of the six can be diagnosed pulmonary heart disease, and its sensitivity, specificity and diagnostic accuracy than echocardiography as high