Your heart does something remarkable every single day, it beats roughly 100,000 times and pumps thousands of liters of blood through your body without you thinking about it once. But when something’s not working quite right, your cardiologist may mention a number that carries a lot of weight: your ejection fraction. If you’ve heard this term and weren’t sure what it meant, you’re not alone, and understanding it could genuinely change how you manage your heart health.
What Is Ejection Fraction?
Ejection fraction (EF) is a measurement, expressed as a percentage, of how much blood your left ventricle pumps out with each heartbeat. In a healthy heart, the left ventricle doesn’t empty completely; it pumps out roughly 55–70% of the blood it holds. That range is considered normal.
Think of it like squeezing a water balloon. A strong squeeze pushes out most of the water. A weak one? Not so much. Ejection fraction tells your doctor how strong that “squeeze” actually is.
What the Numbers Mean
Here’s a general breakdown of ejection fraction ranges:
- 55–70%: Normal range, your heart is pumping efficiently.
- 41–54%: Mildly reduced, your heart is working harder than it should.
- 40% or below: Reduced EF, often associated with heart failure, and a sign that intervention may be needed.
It’s worth noting that a preserved ejection fraction (above 50%) doesn’t always mean the heart is problem-free. Some patients have symptoms of heart failure even with a normal EF, this is why context matters, and why a thorough evaluation by a cardiologist is essential.
How Is Ejection Fraction Measured?
The most common way to measure ejection fraction is through an echocardiogram, a non-invasive ultrasound of the heart. It gives your cardiologist a real-time look at how your heart chambers are functioning, how well the valves are working, and yes, what your ejection fraction is. Other methods, like cardiac MRI or nuclear stress testing, may also be used depending on your situation.
The Connection to Heart Arrhythmia
A reduced ejection fraction and heart arrhythmia often go hand-in-hand. When the heart muscle is weakened and can’t pump effectively, electrical signals can become disrupted, leading to irregular heartbeats. Conversely, certain arrhythmias can strain the heart over time and contribute to a declining EF. Identifying both early is key to preventing more serious complications, including heart failure or stroke.
When Should You Be Concerned?
You don’t have to wait until you feel symptoms to get checked. That said, certain warning signs warrant prompt evaluation:
- Shortness of breath, especially during everyday activities
- Unusual fatigue or weakness
- Swelling in your legs, ankles, or feet
- Heart palpitations or a racing, fluttering heartbeat
- Dizziness or lightheadedness
These symptoms don’t always mean your EF is low, but they’re your body’s way of asking for attention.
What Can Be Done If Your EF Is Low?
The good news: a low ejection fraction isn’t a dead end. Depending on the underlying cause, treatment options can include medication to reduce the heart’s workload, lifestyle modifications, cardiac rehabilitation, or procedures to address structural or rhythm issues. Many patients see meaningful improvement in their EF with the right care plan, especially when caught early.
Take the Next Step with AMS Cardiology
If you’ve been told your ejection fraction is low, or if you’re experiencing symptoms and haven’t been evaluated yet, the team at AMS Cardiology is here to help. With convenient locations in Horsham and North Wales, PA, our cardiologists provide compassionate, expert care tailored to your heart’s specific needs. Don’t wait for symptoms to get worse, schedule your evaluation today.