Cardiac Index, SVR/SVRI During Weaning From ECC- Data Obtained From Femoral and Radial Artery Transducer

50 consecutive cardiac surgical patients undergoing on-pump primary coronary artery bypass, valve replacement or combined surgery are included in the study. Cardiac output is measured sequentially by the arterial pressure waveform analysis method from radial and femoral arterial sites

Inclusion Criteria: Coronary artery disease , aortic valve stenosis, aortic valve regurgitation, mitral valve stenosis, mitral valve regurgitation, Exclusion Criteria: none