To calculate Cardiac Output (CO) from the flow signal measured by a Transonic flow probe (typically on the Aorta), you can integrate the flow signal to give stroke volume, derive the height of this signal, and multiply by heart rate, Using LabChart 8 this is done in a series of channel calculations. Using LabChart Lightning, the steps can be combined in a custom calculation.
An example LabChart file can be found here and the channels are as follows:
Channel 1: Heart Rate
Channel 2: Raw Flow Signal
Channel 3: Integral of Flow Signal (using Integral calculation)
Channel 4: Conversion of Vol/min/s to Vol/min (using arithmetic)
Channel 5: Height Calculation to derive Stroke Volume (using Cyclic measurements)
Channel 6: SV x HR (using arithmetic)
For further technical assistance with this or any other issue, please contact ADInstruments Technical Support by clicking HERE.