Thermodilution using a pulmonary artery catheter is considered the gold standard in measuring cardiac output. However. Drawbacks associated with the technique have prompted clinicians to seek less invasive options. But these alternatives have their own limitations. We examine the evidence on four devices that measure cardiac output using.
All six studies found a good correlation between the NICaS and the referred method (thermodilution).
In two studies NICaS was found more accurate than thoracic impedance cardiography.
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