What causes frequent atrial flutter?

It’s caused by an abnormal electrical circuit in the upper chambers of the heart (atria) that makes the atria beat quickly and flutter instead of fully squeezing . It can result in fast heart rates and a heart that doesn’t work as well as it should. This increases the risk for stroke and may cause you to feel poorly.

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Is there a better drug than amiodarone?

Dronedarone has been viewed as a potential therapeutic alternative for amiodarone because of a lower risk for pulmonary, thyroid, and dermatologic adverse effects. Compared with amiodarone, dronedarone has poor bioavailability and a shorter terminal disposition half-life, which dictates a twice-daily dosing regimen.

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