thermodilution การใช้

Temperature changes rather than dye concentration are measured at sites in the circulation; this method is known as thermodilution.
By attaching both the injector site and the ventricular thermistor to a small computer, the thermodilution curve can be plotted.
Modern catheters are fitted with heating filaments that intermittently heat up and measure the thermodilution curve, providing serial " Q " measurements.
The historically significant Swan-Ganz multi-lumen catheter allows reproducible calculation of cardiac output from a measured time-temperature curve, also known as the thermodilution curve.
Transpulmonary thermodilution allows for less invasive " Q " calibration but is less accurate than PA thermodilution and requires a central venous and arterial line with the accompanied infection risks.