Authentication of Radial Versus Femoral Arterial Pressure Waveform-Derived Cardiac Output With Transesophageal Echocardiography-Derived Cardiac Output Measurements in Patients Undergoing On-Pump Coronary Bypass Surgery

Both the radial and femoral arterial pressure waveform-derived CO measurements were comparable with the TEE measurements during the various stages of the cardiac surgery. Although the femoral cannulation site provided marginally better correlation with the reference TEE-derived CO values based on the precision and percentage error analysis; this may not be significant clinically and either of the arterial cannulation sites can be used reliably for CO measurements in clinical practice. Cardiopulmonary bypass had no impact on the radial and femoral artery pressure waveform-derived CO measurements.