Comparison of Cardiac Index and Stroke-volume-index Measured by Pulmonary Artery Catheter, FloTrac® and Argos® in Cardiac Surgery Patients.

Comparison of Cardiac Index and Stroke-volume-index Measured by Pulmonary Artery Catheter, FloTrac® and Argos® in Cardiac Surgery Patients.

A comparison of cardiac performance determined by stroke-volume-index measured by different mechanisms in patients during and after cardiac surgery:

1. Pulmonary artery catheter
2. Flo Trac
3. Argos Monitor Investigations will be done in theater and on ICU in ventilated and spontaneously breathing patients.

Inclusion Criteria:

• Patient after cardiac surgery with pulmonary artery catheter

Exclusion Criteria:

• Hemodynamic instability, no consent