Atrial fibrillation (AFib) is the most common type of heart arrythmia. It is caused by an irregular heartbeat in the upper chambers (atria) of the heart. The irregular heartbeat does not allow blood to flow adequately to the lower chambers (ventricles) of the heart.
When AFib occurs, the upper and lower chambers do not work together as they should, and the lower chambers of the heart do not pump enough blood to the lungs and body. This can sometimes cause the heart to beat much faster than normal.
AFib can increase the risk of stroke because blood may pool in the heart and blood clots can form. According to the Centers for Disease Control and Prevention, one in seven strokes are caused by AFib.
Your risk of AFib can increase with age. Health conditions such as high blood pressure, heart disease, diabetes, obesity, thyroid problems, moderate to heavy alcohol consumption, smoking, and chronic kidney disease also increase your risk of AFib.
People with AFib may experience one or more of the following symptoms:
n Irregular heartbeat.
n Heart palpitations.
n Lightheadedness.
n Extreme fatigue.
n Shortness of breath.
n Chest pain.
You should consult your doctor if you experience these symptoms. For more information, visit cdc.gov/heartdisease/atrial_fibrillation.htm.
— Benefits and Wellness,
Human Resources, 2-22-24
