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- W2955208145 abstract "Hemodynamic monitoring is an essential part of the perioperative management of the cardiovascular patient. It helps to detect hemodynamic alterations, diagnose their underlying causes, and optimize oxygen delivery to the tissues. Furthermore, hemodynamic monitoring is necessary to evaluate the adequacy of therapeutic interventions such as volume expansion or vasoactive medications. Recent developments include the move from static to dynamic variables to assess conditions such as cardiac preload and fluid responsiveness and the transition to less-invasive or even noninvasive monitoring techniques, at least in the perioperative setting. This review describes the available techniques that currently are being used in the care of the cardiovascular patient and discusses their strengths and limitations. Even though the thermodilution method remains the gold standard for measuring cardiac output (CO), the use of the pulmonary artery catheter has declined over the last decades, even in the setting of cardiovascular anesthesia. The transpulmonary thermodilution method, in addition to accurately measuring CO, provides the user with some additional helpful variables, of which extravascular lung water is probably the most interesting. Less-invasive monitoring techniques use, for example, pulse contour analysis to originate flow-derived variables such as stroke volume and CO from the arterial pressure signal, or they may measure the velocity-time integral in the descending aorta to estimate the stroke volume, using, for example, the esophageal Doppler. Completely noninvasive methods such as the volume clamp method use finger cuffs to reconstruct the arterial pressure waveform, from which stroke volume and CO are calculated. All of these less-invasive CO monitoring devices have percentage errors around 40% compared with reference methods (thermodilution), meaning that the values are not interchangeable." @default.
- W2955208145 created "2019-07-12" @default.
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- W2955208145 date "2019-08-01" @default.
- W2955208145 modified "2023-10-11" @default.
- W2955208145 title "New Developments in Hemodynamic Monitoring" @default.
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- W2955208145 doi "https://doi.org/10.1053/j.jvca.2019.03.043" @default.
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