Does fibrillation affect how the heart pumps blood?

Yes, fibrillation, particularly Atrial Fibrillation (AFib), can significantly affect how the heart pumps blood. Here's how:

1. Irregular Heart Rhythm: AFib causes the heart's upper chambers (atria) to contract irregularly and rapidly. This disrupts the normal electrical signals that coordinate the heart's pumping action.

2. Reduced Blood Flow to Ventricles: The irregular contractions of the atria can lead to ineffective filling of the heart's lower chambers (ventricles). As a result, less blood is pumped out of the heart with each beat.

3. Blood Clot Formation: AFib increases the risk of blood clot formation in the heart, especially in the left atrial appendage. These clots can travel through the bloodstream and block arteries, leading to complications like stroke.

4. Heart Failure: Over time, chronic AFib can weaken the heart muscle and lead to heart failure. This is because the heart has to work harder to pump blood against the irregular rhythm and increased pressure in the heart.

5. Reduced Exercise Tolerance: Individuals with AFib may experience shortness of breath, fatigue, and reduced exercise tolerance due to the inefficient pumping of blood.

6. Symptoms and Complications: The symptoms of AFib, such as palpitations, dizziness, and shortness of breath, can impact a person's quality of life and daily activities. Complications like stroke and heart failure further emphasize the adverse effects of AFib on the heart's pumping function.

7. Treatment Focus: The primary goals of AFib treatment are to control the heart rate, prevent blood clots, and improve overall heart function. This can be achieved through medications, lifestyle changes, or medical procedures like ablation or pacemaker implantation.

Understanding how AFib affects heart function is crucial for effective management and prevention of complications. Regular monitoring and follow-up with a healthcare professional are essential for individuals with AFib or at risk of developing it.