IJCS | Volume 31, Nº3, May/ June 2018

287 Piepoli et al. 14 2010 It used impedance cardiography, and not the pulmonary artery catheter, to assess stroke volume, in post-MI patients, and the use of bone marrow stem cells to improve cardiac function. The study showed the beneficial effect of stem cells usage in post-MI patients with depressed LV function. Albert 15 2006 Comparison between hemodynamic variables: Cardiography impedance Stroke volume / stroke index; cardiac output / cardiac index; systemic vascular resistance; left cardiac work / left cardiac work index. Other contractility parameters: - Systolic time ratio; Pre-ejection period; Left ventricular ejection time; Velocity index; Thoracic fluid content. Pulmonary Artery Catheter - Stroke volume / stroke index; cardiac output / cardiac index; left cardiac work / left cardiac work index; systemic vascular resistance and peripheral vascular resistance index; pulmonary vascular resistance and pulmonary vascular resistance index; pulmonary artery pressure; right atrial pressure.. Impedance cardiography provides contractility data that can increase traditional hemodynamic information. Current measure systems that measure thoracic impedance to electrical current are user friendly, easy to apply and safe. The use of impedance cardiography may enlarge the relationships between hemodynamic and cardiovascular parameters and circulation disorders that may subsidize patient care. Silva et al. Impedance cardiography in myocardial infarction International Journal of Cardiovascular Sciences. 2018;31(3)282-289 Review Article functions should be combined with detection of blood NT-proBNP, BNP and cTnT and echocardiography. 10 The use of ICG made it possible to offer an integrated analysis with electrocardiogram to help identify the patients at risk of serious adverse events after ST- segment. All-cause or cardiac mortality and in-hospital recurrent ischemia, recurrent nonfatal MI, and need for revascularization were considered as serious adverse events. A greater risk of cardiac death was observed within a 5-year period after STEMI. 5 Significant correlation of cardiac output values was observed between the impedance cardiography and the Swan-Ganz technique during intra-aortic balloon (IAB) usage. Noninvasive evaluation of hemodynamic indices by continuous monitoring of impedance cardiography during acute myocardial infarction complicated by cardiogenic shock and managed by an intra-aortic balloon is a reliable method for further application. 11 There is a low correlation between PAC and ICG in critically ill patients, but the exclusion of patients with valve regurgitation improves the results. The use of ICG led to a 71% reduction in PAC usage in critically ill patients. The support of clinicians for the introduction of any new technology is as important as the accuracy and reliability of that technology. Only with such support can impedance cardiography be accepted. 12 Impedance cardiography is a valid parameter to estimate stroke volume and to guide optimization of CRT timing in postinfarction patients. It has shown an advantage over the pulmonary artery catheter because it is a simple method of measuring daily hemodynamic data of patients. 13 Impedance cardiography, similarly to the pulmonary artery catheter, measures stroke volume, and in post-MI patients, it was possible to show the beneficial effect of stem cells usage in patients with depressed LV function using ICG, without the need for an invasive method. 14 Impedance cardiography provides contractility data that can increase traditional hemodynamic information. Current measure systems that measure thoracic impedance to electrical current are user friendly, easy to apply and safe. The use of impedance cardiography may enlarge the relationships between hemodynamic parameters and cardiovascular and circulation disorders that may subsidize patient care. Comparison between hemodynamic variables: Cardiography impedance - Stroke volume / stroke index; cardiac output / cardiac index; systemic vascular resistance; left cardiac work / left cardiac work index. Other contractility parameters: - Systolic time ratio; Pre- ejection period; Left ventricular ejection time; Velocity index; Thoracic fluid content. Pulmonary Artery Catheter - stroke volume; stroke index; cardiac output; cardiac index, left cardiac work; left cardiac index; systemic vascular resistance and peripheral vascular resistance index; pulmonary vascular resistance and pulmonary vascular resistance index; pulmonary artery pressure; right atrial pressure. 15