Relationship between T-wave alternans magnitude and T-wave amplitude before the onset of ventricular tachyarrhythmias during emergent reperfusion in acute coronary syndrome patients.

摘要

We greatly appreciate Dr Madias' remarks on our recent study demonstrating the usefulness of continuous T-wave alternans (TWA) monitoring in ultra-short-term prediction of impending life-threatening ventricular tachyarrhythmias (VTA) during emergent reperfusion therapy in acute coronary syndrome (ACS) patients.1 He raised an interesting question, namely, was there a relationship between the increase in TWA and the possible increase in T-wave amplitude prior to the occurrence of VTA?2 This question is based on his theory that TWA magnitude is affected by T-wave amplitude and should therefore be corrected.