Concealed conduction in WPW and accessory pathwaysPanic attackProcainamideReversion of dysrhythmia after cardioversionSVT with aberrancyWide complex tachycardia10 Min Read Steve SmithonSeptember 7, 2020 Young Man with a Heart Rate of 257. What is it and how to manage? A 30-something was in the ED for some minor trauma when he was noted to have a fast heart rate. He acknowledged that he had…