Retracted: Semi-invasive monitoring of cardiac output by a new device using arterial pressure waveform analysis: a comparison with intermittent pulmonary artery thermodilution in patients undergoing cardiac surgery

Abstract

In cardiac surgery patients, CO measured by a new semi-invasive arterial pressure waveform analysis device showed only moderate agreement with intermittent pulmonary artery thermodilution measurement.

Advances in Critical Care for the Nephrologist

“…The algorithm used for calculating stroke volume takes into account the pulse pressure, the arterial compliance (estimated by age, gender, and body surface area), and the conformation of the arterial waveform. In one study that compared the intermittent pulmonary artery thermodilution technique with the FloTrac device among patients who were undergoing coronary artery bypass grafting and valvular repair, the FloTrac device showed a moderate agreement (46). All three pulse contour analysis devices offer a reliable alternative approach to the invasive PAC in estimating CO.…”

Comparison of cardiac output measurements obtained through thermo dilution method and arterial pressure wave analysis in patients undergoing cardiopulmonary bypass graft surgery

“…İlk jenerasyon FloTrac/Vigileo aleti ile ilgili çeliş-kili sonuçlar ortaya koyan makalelerin yayınlanması üzerine [4][5][6] hızlı hemodinamik değişikliklerde vasküler durumu (vasküler kompliyans, impedans, direnç) daha iyi yansıtması için yazılımın kullandığı ilk algoritma geliştirilmiş, yeniden düzenlenmiş ve yeni bir yazılım ortaya konmuştur. Bu yeni yazılımda vasküler tonusda meydana gelen değişiklikleri değerlendirme ve buna Mayer ve ark., [7] ikinci jenerasyon FloTrac/Vigileo sistem ile termodilüsyon yöntemi arasında oldukça yük-sek oranda uyum bulduklarını, yeni algoritmanın, vasküler sistemin yapısından (incelme, çap değişiklikleri, dallanma) ve dalga sinyalindeki parazitlerden kaynaklanan hata oranını azalttığını bildirmişlerdir.…”

An Observational Comparative Study of Cardiac Index Estimated By FloTrac and Intermittent Thermo Dilution in Off-Pump Coronary Artery Bypass Grafting

“…Apart from calculating CO, PAC provides data about the cardiac filling pressures such as central venous pressure, pulmonary artery pressure, pulmonary artery occlusion pressure, systemic vascular resistance, pulmonary vascular resistance and mixed venous oxygen saturation. This additional information can be a valuable tool particularly in the management of hemodynamically unstable patients [7]. The use of PAC has been increasingly criticised because of its invasiveness and unclear evidence of its benefit.7 CO estimation by ITD method fails to detect rapid and transient hemodynamic changes that may occur especially during OPCABG [16].…”

“…Traditionally, CO monitoring has been accomplished by the Intermittent Thermodilution Technique (ITD) using Pulmonary Artery Catheter (PAC) [6]. Considering its potential advantage of providing additional information about cardiac filling pressures, pulmonary artery pressures and mixed venous oxygen saturation, PAC still remains the favored technique by many clinicians [7]. However, the routine use of PAC has been questioned in the literature for the lack of statistical evidence of its benefit and associated problems such as longer time required for its placement, cost, intermittent nature leading to potential for delay and rare complications like pulmonary artery rupture [8].…”

“…Various lesser invasive techniques have been developed such as transthoracic bioimpedence, pulse dye densitometry, Doppler and pulse wave contour analysis [7,9]. FloTrac by Edwards Life sciences is one of such devices based on the pulse contour analysis that estimates the cardiac output by beat to beat stroke volume analysis, based on Windkessel model described by Otto Frank in 1899 [10].…”