case_images: PMC8672374_01
case_images: Telemetry strip showing repeated self-terminating episodes of TdP with prolonged QT with R-on-T phenomenon with bradycardia.. Abbreviation: TdP, torsades de pointes.
case_images: 10.1177_23247096211056492-fig1.jpg
case_images: PMC8672374_01_10.1177_23247096211056492-fig1.jpg
case_images: fig1-23247096211056492
case_images: She was immediately placed on telemetry and was revealed to have several self-terminating episodes of polymorphic ventricular tachycardia (Figure 1).
case_images: A 12-lead EKG demonstrating EAD occurring during repolarization or R-on-T phenomenon which occurs during bradycardia.. Abbreviations: EKG, electrocardiogram; EAD, early afterdepolarization.
case_images: 10.1177_23247096211056492-fig2.jpg
case_images: PMC8672374_01_10.1177_23247096211056492-fig2.jpg
case_images: fig2-23247096211056492
case_images: The patient's QTc was 529 ms on day 1 with R-on-T phenomenon (Figure 2), which exceeded the normal QTc interval for women of <=450 ms.  
case_images: EKG after transvenous pacer is placed, prolonged QTc, but overdrive pacing suppresses ventricular ectopy.. Abbreviation: EKG, electrocardiogram.
case_images: 10.1177_23247096211056492-fig3.jpg
case_images: PMC8672374_01_10.1177_23247096211056492-fig3.jpg
case_images: fig3-23247096211056492
case_images: She was then temporarily placed on transcutaneous pacing until a transvenous pacemaker could be placed in the cardiac catheterization lab (Figure 3).