What causes Atrial Flutter?

Atrial flutter may be caused by the following:

• Heart disease
• Heart surgery–atrial flutter is most common during the first few weeks after open-heart surgery
• Disease elsewhere in the body that affects the functioning of the heart
• Intake of substances such as caffeine, alcohol, diet pills, or certain types of prescription or over-the-counter medication that affect the electrical impulses of the heart
• Stress and anxiety