Diagnosis of mitral insufficiency using Impedance Cardiography Technique ICG
Impedance cardiography (ICG) is a non invasive tool for assessing the hemodynamic parameters. This technique has been used for diagnosing several cardiovascular diseases, such as heart failure, cardiomyopathy, and valvular diseases. Particularly, the valvular heart disease is characterized by damage in one of the four heart valves: the mitral, aortic, tricuspid or pulmonary valves. The mitral valve insufficiency and the aortic valve stenos are the most frequent valve diseases in the word. In this paper, we proposed to diagnostic the mitral valve insufficiency using the impedance cardiography technique. The study group consisted of 40 patients (20 healthy subjects and 20 patients with mitral insufficiency). A parameter “I” is calculated from the impedance cardiogram waveform and it is used to differentiate between healthy subjects and patients with mitral insufficiency. The parameter “I” was related significantly to the abnormalities of impedance cardiogram waveform. For patients with mitral insufficiency, “I” was higher than the healthy subjects with a difference ratio of 89.3%. To improve the diagnosis, we determined the stroke volume, cardiac output, and other hemodynamic parameters in both healthy and ill patients. Finally, we concluded that we can identify, easily, patients with mitral insufficiency based on the abnormalities of impedance cardiogram tracings and a characteristic parameter “I”.