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Recordings from the patient who developed haemodynamic collapse while receiving propafenone; isoprenaline administration was started after 300 s at 5 µg/min, and 1:1 synchronisation at 222 beats/min occurred nearly 300 s later. Time plot of RR (black tracing) and FF intervals (grey tracing) is shown. FF, atrial cycle; RR, ventricular cycle.
