PhysioFlow articles

This 81 year-old Lady was implanted two weeks before the measurement with a bi-ventricular pacemaker to treat her heart failure with resynchronization therapy.

Different stimulation modes have been tested and their outcome in terms of stroke volume has been assessed.

The stoke volume was much better in left ventricular stimulation only (LV) compared to right ventricular stimulation only (RV). Bi-ventricular stimulation leads to intermediate results.

A cyclo-ergometer exercise test was performed on this 57-year old male patient. He is a smoker with a family background of CAD. He is suffering from left bundle branch block making ST-segment analysis impossible.

The patient has achieved 78 % of max. heart rate at 120 watts. Moderate paleness and dyspnoea have been observed at the end of the 120 watts step.

However, after a normal initial increase, the stroke volume dropped dramatically from the beginning of the 120 watts step