Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Aug 2023
Standardized blood volume changes monitored by capnodynamic hemodynamic variables: An experimental comparative study in pigs.
The capnodynamic method, based on Volumetric capnography and differential Fick mathematics, assess cardiac output in mechanically ventilated subjects. Capnodynamic and established hemodynamic monitoring parameters' capability to depict alterations in blood volume were investigated in a model of standardized hemorrhage, followed by crystalloid and blood transfusion. ⋯ Capnodynamic cardiac output and stroke volume did best depict the changes in intravascular blood volume. Pulse contour parameters did not follow volume changes in a reliable way.