What is Heart Failure with Preserved Ejection Fraction (HFpEF)?

AI-assisted educational content. This article was prepared with AI assistance using sources from peer-reviewed literature and major medical centers. It is general health information, not medical advice. It has not yet been clinician-reviewed. Always consult a qualified clinician for personal medical decisions.

Heart failure with preserved ejection fraction (HFpEF) is a type of heart failure where the heart's main pumping chamber squeezes normally but is too stiff to relax and fill with blood properly between beats.[1][2][4]

HFpEF affects about half of people with heart failure, often linked to conditions like high blood pressure, diabetes, and obesity.[3][4] People may experience shortness of breath, fatigue, and swelling, especially during activity.[1][2] Doctors typically diagnose it using heart imaging and other tests to confirm normal pumping strength alongside these symptoms.[1][6]

Key Takeaways

• HFpEF means the heart pumps out a normal amount of blood per beat (ejection fraction 50% or higher) but struggles to fill.[1][2][4]
• Common in older adults with high blood pressure, diabetes, or obesity.[2][7]
• Symptoms include shortness of breath, tiredness, and leg swelling.[1][2]
• Diagnosis involves echocardiograms, blood tests, and symptom review.[1][6]
• Managing related conditions like blood pressure can help ease symptoms.[6]

What causes HFpEF?

HFpEF develops when the left ventricle, the heart's main pumping chamber, becomes stiff or thickened, making it hard to relax and fill with blood between beats.[1][2][4] This stiffness often stems from long-term high blood pressure, which affects 80-90% of people with HFpEF.[7] Other factors include diabetes, obesity, kidney disease, and aging, which contribute to changes in heart muscle and surrounding tissues.[1][2]

Unlike heart failure with reduced ejection fraction (HFrEF), where the heart muscle weakens and pumps poorly, HFpEF preserves squeezing power but impairs filling, known as diastolic dysfunction.[2][6][8] Additional issues like atrial fibrillation, lung high blood pressure, or right heart strain can worsen it over time.[7] These changes may not show up at rest but become clear during exercise or stress.[7]

People with HFpEF often have multiple health conditions that stiffen the heart, leading to backup of blood into the lungs or body.[2][4] While the exact processes vary, inflammation, poor blood vessel function, and reduced heart relaxation play key roles.[7]

What are the symptoms of HFpEF?

People with HFpEF may notice shortness of breath during everyday activities like walking or climbing stairs.[1][2][7] Fatigue and tiredness are common, even with light effort, because the heart cannot increase output enough to meet the body's needs.[2][7] Swelling in the legs, ankles, or abdomen can occur from fluid buildup.[1][2]

These symptoms overlap with other heart failure types but arise from filling problems rather than weak pumping.[2][4] Some people experience exercise intolerance, where they tire quickly, or trouble sleeping flat due to breathing issues.[7] Atrial fibrillation, affecting up to two-thirds of patients, can make symptoms worse by disrupting filling.[7]

Symptoms often develop gradually and may flare during illness, infection, or high salt intake.[1] Doctors typically look for patterns like worsening with activity to spot HFpEF.[6][7]

How is HFpEF diagnosed?

Doctors start by reviewing symptoms like breathlessness and fatigue, along with medical history of risks such as high blood pressure or diabetes.[1][6] An echocardiogram, an ultrasound of the heart, measures ejection fraction—if it's 50% or higher with signs of stiffness, HFpEF is likely.[1][2][4][6]

Blood tests check for elevated natriuretic peptides, proteins released when the heart is stressed, or signs of congestion.[3][4] An EKG rules out other issues, while stress tests or filling pressure measurements confirm problems during activity.[1][6][7] In some cases, cardiac catheterization assesses pressures directly.[4]

Diagnosis requires symptoms of heart failure, preserved ejection fraction, and evidence of heart dysfunction, like poor relaxation.[4][6][7] This rules out non-heart causes and guides next steps.[1]

When to talk to your doctor

If you or a loved one notice new or worsening shortness of breath, swelling, or unusual fatigue, especially with activity, contact your doctor promptly.[1][2] Share details like when symptoms started, what makes them better or worse, and any history of high blood pressure or diabetes. Doctors typically evaluate with exams and tests to check for HFpEF or related issues. Early discussions can help manage symptoms through lifestyle or condition control.[6][7]

Frequently asked questions

Q: How is HFpEF different from other heart failure types?
HFpEF features normal squeezing (ejection fraction 50% or higher) but stiff filling, unlike HFrEF where pumping is weak (under 40-50%).[2][4][8] Both cause similar symptoms, but HFpEF links more to stiffness from blood pressure or obesity.[2]

Q: Can lifestyle changes help with HFpEF?
Doctors often suggest maintaining a healthy weight, limiting salt, staying active as tolerated, and managing blood pressure or diabetes, which may ease symptoms.[1][2][6] Options can include supervised exercise programs.

Q: Is HFpEF curable?
HFpEF is a chronic condition, but controlling risks like high blood pressure can improve quality of life and reduce flares.[2][6][7] Doctors may consider ways to address underlying factors for better outcomes.