心脏的功能状态是心血管疾病诊断、治疗和预后判断的重要依据,尤以左心室为重要。长期以来,有关这些指标的资料均借助于心导管检查、心血管造影等创伤性方法获得。近20年来,在临床和实验研究中,各种非创伤性心脏功能检查技术不断发展,使心脏机能检查得到迅速发展。1966年,Kubi-cek首先提出用阻抗心动图测量心输出量。以后,国内外一些作者用阻抗心动图法与测量心输出量的各种传统方法做了比较,认为阻抗心动图法测得的心输出量值与传统 The functional status of the heart is an important basis for the diagnosis, treatment and prognosis of cardiovascular diseases, especially the left ventricle is important. For a long time, the data on these indicators were obtained by traumatic methods such as cardiac catheterization and cardiovascular angiography. In the past 20 years, various non-traumatic cardiac function tests have been developed in clinical and experimental studies, leading to rapid development of cardiac function tests. In 1966, Kubi-cek first proposed measuring cardiac output using impedance cardiogram. Later, some domestic and foreign authors compared the traditional methods of impedance cardiogram with the measurement of cardiac output, and concluded that the values ​​of cardiac output measured by impedance cardiogram and the traditional