Template:Tachycardia (wide) DDX

Wide-complex tachycardia

• Regular
  • Ventricular tachycardia (80% of cases)
  • PSVT with aberrant conduction:
    • PSVT with bundle branch block (fixed or rate related)
    • PSVT with accessory pathway
    • Atrial flutter with bundle branch block
  • Sinus tachycardia with bundle branch block (fixed or rate related)
  • Accelerated Idioventricular Rhythm (consider if less than or ~120 bpm)
  • Metabolic
    • Hyperkalemia
    • Digoxin toxicity
    • Severe metabolic acidosis
• Irregular
  • A-fib/flutter with variable AV conduction AND bundle branch block (fixed or rate-related)
  • A-fib/flutter with variable AV conduction AND accessory pathway (e.g. WPW)
  • A-fib + Hyperkalemia
  • Polymorphic v-tach/torsades