Validation of Automated Cardiac Output Measurement

Validation of Automated Ultrasound Method for Measurement of Cardiac Output: A Clinical Observational Study

Automated software analysis now allows for quick estimation of cardiac output from the echocardiographic 5-chamber view. This study will validate the automated software method against pulmonary artery thermodilution and against conventional cardiac output measurement with echocardiography.

Inclusion Criteria:

• Postoperative cardiac surgery patient
• Pulmonary artery catheter in situ
• Extubated

Exclusion Criteria:

• No echocardiographic image available
• No consent
• Moderat-severe aortic insufficiency
• Moderat-severe tricuspid insufficiency
• Moderat-severe mitral valve insuffficiency
• Arythmia Intracardiac shunt Moderat-severe hemodynamic instability