An R on T premature ventricular complex (PVC) is an important concept in ECG reading as it may lead to ventricular tachycardia, ventricular fibrillation, and possibly sudden cardiac death.

Explore ECG insights on Ventricular Extrasystole (VES), including the vulnerable period, R-on-T phenomenon, and the role of defibrillators in management.

When the R wave of a PVC coincides in time with the T wave of the previous beat, this timing can lead to unidirectional block and initiation of reentry, known as the R-on-T phenomenon.

Feb 5, 2021 · the R on T phenomenon happens when a PVC (which represents the R) occurs at a region which is in a vulnerable phase of repolarization (represented by a T wave on ECG)

Oct 25, 2023 · Twenty-eight hours after successful coronary intervention, he developed recurrent polymorphic ventricular tachycardias (PMVTs) with QTc prolongation.

Nov 27, 2025 · The R-on-T phenomenon is a descriptive term for a premature electrical signal landing directly on the T wave of the preceding beat. The R wave is the prominent spike of an early electrical …

May 10, 2023 · The R-on-T phenomenon is a type of ventricular extrasystole that can occur when a premature ventricular contraction (PVC) happens during the relative refractory period (RRP) of the …