Tachycardia
June 27th, 2019
Overview
A rapid ventricular rate of >100bpm may be in the context of a variety of rhythms that are clinically classified as narrow complex tachycardias (QRS duration <120ms) and wide complex tachycardias (QRS duration >120ms).
Tachyarrhythmias
Regular Narrow Complex Tachycardia
- Sinus tachycardia
- Focal atrial tachycardia
- Atrial flutter
- AV nodal reentrant tachycardia
- AV reentrant tachycardia
Irregular Narrow Complex Tachycardia
- Multifocal atrial tachycardia
- Atrial fibrillation
- Atrial flutter with variable block
Regular Wide Complex Tachycardia
- Monomorphic ventricular tachycardia
- SVT with aberrant conduction (bundle branch block)
- SVT with preexcitation (accessory pathway)
- Pacemaker-mediated tachycardia (atrial tracking or endless loop tachycardia)
Irregular Wide Complex Tachycardia
- Polymorphic ventricular tachycardia
- AF with aberrant conduction (bundle branch block)
- AF with preexcitation (accessory pathway)
Other
- Artefact - due to CPR, shivering, shaking or other movements
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