慢性支气管炎和肺气肿引起慢性肺源性心脏病,将导致心肺功能衰竭而危及生命。目前在临床上对晚期肺心病尚缺乏理想的处理措施,因而在慢性支气管炎患者中及时发现早期肺心病和可疑肺心病,有着重要的意义。目前国内外报告大都认为,心电向量图对慢性肺心病的诊断较心电图为敏感; Chronic bronchitis and emphysema cause chronic cor pulmonale, which can lead to cardiorespiratory failure and endanger life. At present, the clinical treatment of advanced pulmonary heart disease is still lack of ideal treatment, and thus in patients with chronic bronchitis and timely detection of early pulmonary heart disease and suspected pulmonary heart disease, of great significance. At present, most of the reports at home and abroad think that ECG diagnosis of chronic cor pulmonale is more sensitive than electrocardiogram.