Multifocal atrial tachycardia

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Heart, section through the middle Heart, front view

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Multifocal atrial tachycardia

Any underlying conditions that can precipitate MAT should be treated first. Improving oxygenation, administering intravenous magnesium, and discontinuing certain medications -- such as theophylline -- may be enough to terminate the MAT.

Heart rate controlling medications, such as calcium channel blockers (verapamil, diltiazem) or selective beta-blockers, may be needed.

MAT is controllable if the underlying condition can be controlled.

• Reduced pumping action of the heart
• Heart failure
• Cardiomyopathy

Call your health care provider if:

• Rapid or irregular heartbeat is associated with other MAT symptoms.
• Symptoms worsen, do not improve with treatment, or new symptoms develop.

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