CFL-512

Conduct NT – Analyse Recorded Data

Conductance Catheter Settings

Match the catheter with the actual heart size, exclude individual segments and optimize the dual field setting.

Rho measurement

The Rho cuvette is used to measure blood resistivity from a blood sample. Blood resistivity is required for the calibration of the volume measurements. The Rho cuvette is connected to the connector on the right side of the CFL-512. When the Rho cuvette is filled with 5 ml of blood the display will show the measured blood resistivity. By pressing the button next to the display this value is stored internally and used in the real-time volume calculation.

Calibration

Calibration of the volume signals from the conductance catheter is automatic. However, the 6 user defined signals connected to the external inputs, Pressure, ECG 2, Aux1, Aux2, Aux3 and Aux4 require initial calibration to enable the software to convert input signal voltages to user units (e.g. mmHg).

Display

Select display-mode and time-base for an optimal view of your chosen signals. View ‘Segmental Volumes’ to check and optimise the (segmental) volume signals. Use views with ‘PV-Loop’ to monitor the pressure-volume loops from beat to beat. Use views with ‘Indices’ to display real-time the calculated indices. Use ‘Dyssynchrony’ view to assess mechanical ventricular dyssynchrony.

Acquire Data

Start data acquisition by clicking ‘Acquire’. An audible signal every 1 s reminds the user that acquisition is in progress. Stop data acquisition by clicking acquire again. Enter a comment at the end of each acquisition run.

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