Atrial tachycardia

Background

  • Also known as focal atrial tachycardia
  • Rate >100 bpm
  • Electrical focus that originates outside in the sinus node at a single location
    • By comparison, reentrant tachycardias (eg. AVRT, AVNRT) involve multiple foci/ larger circuits

Clinical Features

  • Palpitations
    • non-specific finding
    • associated with all tachydysrhythmias, not just AT
    • rapid fluttering/throbbing/pounding sensation in the chest or neck
  • Syncope
    • patients with AT rarely present with syncope
    • cerebral hypoperfusion is more common with a ventricular rate >200 bpm
  • Chest pain
    • can present if there is underlying cardiovascular disease
    • represents a worsening of the associated disease
  • Dyspnea
    • can present if there is underlying cardiovascular disease
    • represents a worsening of the associated disease

Differential Diagnosis

Narrow-complex tachycardia

Evaluation

Management

Disposition

See Also

External Links

References

Authors:

Ross Donaldson