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Vasopressor Bolus Effects on Dynamic Arterial Elastance (EaDyn) and Contractility (dP/dt)
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Abstract
The Hypotension Prediction Index is a machine learning derived algorithm that predicts intraoperative hypotension. The algorithm provides two additional hemodynamic parameters, EaDyn and dP/dt, that characterize the physiological changes and may provide guidance regarding the most efficacious treatments. dP/dt correlates with ventricular contractility from peripheral artery waveforms. EaDyn (dynamic arterial elastance) is the ratio of pulse pressure variation and stroke volume variation (PPV/SVV), correlating with peripheral vascular resistance.
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