AVNRT AV nodal re-entrant tachycardiaLaddergamPseudo R-waveSupraventricular Tachycardia (PSVT)10 Min Read Willy FrickonDecember 26, 2025 Narrow complex tachycardia, with interesting laddergram A woman in her late 70s presented with nausea, vomiting, and diarrhea. Her emergency department ECG is shown below: ECG 1 What do you think?…