Multifocal Atrial Tachycardia

Key points

• MAT: irregular rhythm from ≥ 3 different atrial sites (≥ 3 morphologically distinct P waves).
• More common in elderly patients with chronic lung disease (e.g. COPD).
• Management: correct hypoxia and electrolyte disturbances.
• Rate-limiting calcium channel blockers (verapamil) often first-line.
• Cardioversion and digoxin are NOT useful in MAT.

Decision points in this pathway

• Rate control still needed?

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