Table 1. Vulnerable windows for conduction block and re-entry lasting at least 500 ms.

Conduction Block (ms)
Ionic Remodelling	Baseline	CV reduction	AR increase
None	155–170	145–165	147–160
Moderate	107–120	85–105	97–117
Advanced	85–97	80–97	75–97
Re-Entry (ms)
Ionic Remodelling	Baseline	CV reduction		AR increase
None	−	−		−
Moderate	−	93–97		102–105
Advanced	−	80–90		92–95

Vulnerable windows change depending on different ionic and structural remodelling conditions.