为探索心向量图对肺气肿的诊断标准,观察51例经肺功能检查诊断为慢性阻塞性肺气肿和25例对照组的心向量图.结果发现两组横面左前、左后及X轴后方的QRS环密度积分等指标差异有非常显著意义(P<0.01).如在原来肺气肿心向量图诊断标准的基础上增加上述指标,可使肺气肿诊断阳性率从84%提高至96%,差异有显著意义(P<0.05).说明新标准敏感性较高,可作为心向量图诊断肺气肿参考依据. In order to explore the diagnostic criteria of heart vector chart for emphysema, 51 cases of chronic obstructive pulmonary emphysema diagnosed by pulmonary function test and 25 cases of control group were observed.Results: Axial QRS ring density integral and other indicators have significant differences (P <0.01) .As in the original diagnostic criteria for emphysema heart vector chart to increase the above indicators, emphysema can make the diagnosis of positive rate increased from 84% To 96%, the difference was significant (P <0.05), indicating that the new standard is more sensitive and can be used as a reference for the diagnosis of emphysema.