Changes in Cardiac Output Clinical Trial
Official title:
Non-invasive Volume Evaluation With Exhaled Carbon Dioxide and Pulse Contour Analysis (Nexfin)
The investigators hypothesize that changes in blood circulation can be reflected by exhaled
CO2 provided CO2-production in the tissues and ventilation from the lungs are stable. The
investigators want to explore changes in cardiac output (the amount of blood being pumped out
of the heart each minute) in patients using different devices: an esophagus ultrasound device
measuring cardiac output, a finger cuff measuring blood pressure and cardiac output, and
exhaled carbondioxide in the patients` breath measured by the ventilator.
The investigators investigate patients after bypass surgery or heart valve replacement, and
induce changes in cardiac output with passive leg raise or ventricular pacing.
Measurements with the finger cuff (pulse contour analyses) were aborted due to technical difficulties. ;