Atrial TachycardiaMicro-reentrant atrial tachycardiaSupraventricular Tachycardia - Not AVNRT9 Min Read Steve SmithonAugust 23, 2022 Very fast narrow complex tachycardia A 50-something with h/o palpitations, chest pain, and EF of 40% (of unknown etiology) presented with chest pain. Blood pressure, perfusion,…