Tachyarrhythmias
 

Multifocal Atrial Tachycardia

 
 
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Overview

  • Multifocal atrial tachycardia is an irregular rhythm that occurs due to multiple atrial ectopic foci.
    • Look For

    • Heart rate >100bpm
    • At least three different P wave morphologies
    • Variable PP intervals
    • An isoelectric baseline (to differentiate from atrial fibrillation or flutter)
    •  
    • Causes of Multifocal Atrial Tachycardia

    • COPD exacerbation
    • Cor pulmonale
    • Ischaemic heart disease
    • Rheumatic heart disease
    • Hypokalaemia / hypomagnesaemia
    • Digoxin toxicity
 
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