Swan Ganz catheter-Edwards Lifesciences obtains values of cardiac output/index and systemic vascular resistance/index using the mean artery pressure of either radial or femoral artery. During weaning from extracorporeal circulation, arterial waveform-derived cardiac output measurements from radial cannulation site is not reliable as compared with measurements obtained from femoral cannulation site.
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
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
SINGLE
Enrollment
50
fluctuations of CO/CI/SVR regarding data from radial or femoral arterial cannula, and the therapeutic intervention that it demands these values.
Cardiac output
Measurement of cardiac output from radial and femoral arterial cannula
Time frame: 5 minutes after weaning from extracorporeal circulation (ECC)
Prediction of hypotension episode (HPI)
Measurement of possibility of hypotension episode (HPI) from femoral and radial arterial cannula
Time frame: 5 minutes after weaning from ECC
Systemic Vascular resistance (SVR)
Measurement of SVR from femoral and radial arterial cannula
Time frame: 5 minutes after weaning from ECC
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