Abstract
Thoracic electrical bioimpedance (TEB) is a non-invasive method used to evaluate beat-by-beat stroke volume (SV) and, when the heart rate (HR) is known, cardiac output (CO). Given the fact that in the electrical impedance signal it is easy to identify the start and end of systole, when an electrocardiographic signal is available this method can also be used for the beat-to-beat measurement of the left ventricular pre-ejection period (PEP), the left ventricular ejection time (LVET), and the PEP/LVET ratio (Weissler quotient), which is widely considered an excellent index for monitoring left ventricular contractility (Fig. 1).
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Favaro, M., Allaria, B., Resta, M. (2003). Thoracic impedance tracing in perioperative hemodynamic monitoring: a technique to be revisited. In: Gullo, A. (eds) Anaesthesia, Pain, Intensive Care and Emergency Medicine — A.P.I.C.E.. Springer, Milano. https://doi.org/10.1007/978-88-470-2215-7_12
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DOI: https://doi.org/10.1007/978-88-470-2215-7_12
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