Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular Regular Rhythm - Narrow Complex Tachycardia: • ST vs SVT (AVNRT, OAVRT, AFIutter) • P-waves. Bedside eval of rate and variability • Tx: Vagal maneuvers, Adenosine/CCBs Regular Rhythm - Wide Complex Tachycardia: • HyperK vs VT > SVT+conduction abnormality • Don't rely on criteria • Tx: Meds vs. electricity - amio, procainamide, adenosine Irregular Rhythm - Narrow Complex Tachycardia: • AFib > AFIutter + variable block >> MAT • Determine whether AF is cause/effect • Tx: Underlying cause vs. Rate/Rhythm control Irregular Rhythm - Wide Complex Tachycardia: • HyperK vs AF+WPW vs PMVT vs AFib + conduction abnormality • Beware AV nodal blockers unless certain of AFib + RBBB/LBBB or identical morphology to prior known QRS • AFib tx vs. Procainamide vs. electricity #Tachycardia #Differential #Diagnosis #Table #Wide #Narrow #Irregular #causes #cardiology
