Abdallah Othman on Instagram: "ECG Signatures; Decoding Epsilon, Delta, Osborn, and De Winter Waves. @abdullah_89othman key waveforms: Epsilon Wave in ARVC (seen in V1-V2) signals delayed RV depolarization, a hallmark of fibrofatty replacement. Delta Wave in WPW syndrome (PR <120 ms) indicates pre-excitation via an accessory pathway, risking tachyarrhythmias. Osborn Wave in hypothermia reflects altered repolarization, often with J-point elevation. De Winter T-Waves in proximal LAD occlusion (pro