A comparison of bolus versus continuous cardiac output in an experimental model of heart failure

Abstract

Agreement between the two measures may be the function of biological variability, responses to anesthesia, and technique. Bland and Altman evaluation demonstrated low bias and precision and similar levels of agreement when compared with previous studies in an experimental model where the cardiac output was low and the range was narrow.

Non-invasive assessment of cardiac hemodynamics in patients with advanced cancer and with chronic heart failure: a pilot feasibility study

“…Indeed, O'Malley et al . [21] assessed the association between CO and body weight in untreated dogs with experimental heart failure and found a strong positive correlation, similar to our findings in controls and in patients with cancer.…”

Minimally Invasive and Noninvasive Hemodynamic Monitoring of the Cardiovascular System: Available Options and Future Perspectives

“…Specifically, determination of cardiac output (CO) is paramount in most critical cardiac patients. Several classical techniques are currently available for CO monitoring, including thermodilution [1,2], direct oxygen Fick method [3,4], and the pulse contour method (PCM) [5,6]. However, all these methods are affected by several drawbacks limiting their clinical and research applications [7][8][9].…”

Output performance: cardiac output by pulse contour analysis

“…A known volume of fluid at a known temperature is injected into the anterior vena cava or right atrium and a rapid‐responding thermistor, placed either in the pulmonary artery or a peripheral artery, 8,9 detects the temperature change over time and a computer integrates the average change in temperature and computes a CO. Pulmonary artery thermodilution catheters allow the measurement of pulmonary artery pressure and pulmonary artery occlusion pressure, and can be equipped with light‐emitting diodes to measure mixed venous oxyhemoglobin saturation or with a proximal thermal filament for measuring continuous thermodilution CO 10–13 . Pulmonary artery thermodilution CO catheters are moderately expensive and invasive.…”