Question on cardiovascular physiology and cardiac surgery:

A young woman with Wolff–Parkinson–White (WPW) syndrome has undergone two transcatheter ablation procedures. Despite the resolution of the condition, she still experiences a significant autonomic response upon awakening, characterised by a substantial increase in heart rate (HR) beyond what would typically be expected. Prior to the surgeries, she was unaware of this effect, although her HR was consistently elevated, even during the night. Currently, her HR is normal at night but still very high during the day.

1) Would this effect have been present even before, masked however by an always high night-time HR?

2) Are these effects common after the surgical treatment of WPW?