Theory 06/Cardiac cycle/Termination phase
Termination Is Repolarisation Reserve
The claim
Whether a cycle completes depends on the ratio of repolarisation reserve to action potential duration, so a shortened reserve permits re-entry.
01Mechanism
Repolarisation must complete before the next wave arrives; the ratio determines whether tissue has recovered.
02Prediction
Arrhythmia should track the reserve ratio.
03Refutation
Arrhythmia tracking rate alone would remove repolarisation.