心阻抗图作为对冠心病的一种无创伤性的左心功能检查法,已逐步在临床上开展应用。但A波及P-A(dz/dt)_(max)。间期测定对冠心病的诊断价值以及与心电图V_1 Ptf异常者(≤-0.03毫米·秒)间的相互关系,则尚乏研究。本文就20例冠心病及21例心电图示V_1Ptf异常者心阻抗图中A波及P-A(dz/dt)_(max) Cardiac impedance map as coronary heart disease, a non-invasive left ventricular function test, has been gradually applied in clinical practice. However, A affects P-A (dz / dt) _ (max). Interphase determination of coronary heart disease in the diagnosis and ECG V_1 Ptf abnormalities (≤-0.03 mm · s) between the relationship is still not studied. In this paper, 20 cases of coronary heart disease and 21 cases of abnormal electrocardiogram V_ (1) Ptf in patients with heart wave impedance A wave and P-A (dz / dt) _ (max)