Why the study?
Calibrating the conductance catheter signal requires a baseline appraisal of ventricular volume for real-time invasive pressure-volume cardiomechanical evaluation.
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Echocardiographic calibration may simplify invasive PV assessment in valve interventions; leaves open whether it reliably replaces hypertonic saline methods.
Invasive pressure-volume (PV) assessment with a conductance catheter is the gold standard for the real-time evaluation of ventricular cardiomechanics. The conductance catheter relies on Ohm’s conductance-to-volume equation, which translates segmental conductance into a marker of volume. A baseline appraisal of ventricular volume is mandatory to calibrate the conductance catheter signal.
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Dorpel et al. (2024) studied this question.
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