Determination of Cardiac Ejection Fraction by Electrical Impedance Tomography
نویسندگان
چکیده
where PV is the volume of blood pumped, that is given by the difference between the end-diastolic volume (EDV) and the end-systolic volume (ESV). Cardiac ejection fraction is a relevant parameter because it is highly correlated to the functional status of the heart. To determine the EF, different non-invasive techniques can be used, like echocardiography, cardiac magnetic resonance and computed tomography. However, they are not suitable for continuous monitoring. In this work, we numerically evaluate a new method for the continuous estimation of cardiac ejection fraction based on Electrical Impedance Tomography (EIT).
منابع مشابه
Determination of Cardiac Ejection Fraction by Electrical Impedance Tomography Using an Artificial Neural Network
متن کامل
Estimation of Ejection Fraction with Echocardiographic and Cardioangiographic Methods in 50 Cardiac Patients
Ejection fraction is the most important indicator of heart failure. Angiography , is a standard method to demonstrate ejection fraction but it is invasive. Therefore determination of sensitivity and specificity of echocardiography versus angiography is a good guidance for physicians. A total number of 50 patients were enrolled in a prospective study. Two dimension and M-Mode echocardiography...
متن کاملPrediction of Changes in Left Ventricular Ejection Fraction after Off-Pump Coronary Artery Bypass Grafting Surgery by Myocardial Perfusion Single-Photon Emission Computed Tomography
Introduction: Left ventricular ejection fraction (LVEF) is considered to be the single most important prognostic factor in patients with previous myocardial infarction. LVEF is not improved in all patients after coronary artery bypass grafting (CABG). This study aimed to assess the possibility of prediction of LVEF changes after CABG using myocardial perfusion gated signle photon emission compu...
متن کاملAnterior-posterior impedance cardiography: a new approach to accurate, non-invasive monitoring of cardiac function.
The conventional impedance cardiogram is a record of pulsatile changes in the electrical impedance of the chest with each heartbeat. The signal seems intuitively related to cardiac stroke volume. However doubts persist about the validity of stroke volume measurements based on electrical impedance. This paper presents a new electrical axis for impedance cardiography that is perpendicular to the ...
متن کاملThe effect of cardiac rehabilitation exercises on functional capacity and Ejection fraction in patients after coronary artery bypass graft surgery
Aims: The use of rehabilitation programs is effective in heart patients. Therefore, the aim of the present study was to determination the effect of cardiac rehabilitation exercises on functional capacity and ejection fraction in patients after coronary artery bypass graft surgery. Materials & Methods: For this purpose, 16 cardiac patients of Fatemeh Zahra Sari heart center who underwent CABG s...
متن کامل