The short answer: The 2026 ESC guideline updates the way heart failure is classified and described, places more emphasis on prevention and early recognition, and revises treatment indications in light of new evidence. What this means for an individual patient depends on their diagnosis and clinical assessment. [1]
What changed in the 2026 ESC heart failure guidelines?
The European Society of Cardiology (ESC) published its heart failure guidelines on 28 August 2026. Its public overview highlights three broad areas. This page introduces those themes; it is not a complete treatment protocol. [1]
01. Classification
Refinement of classification by left ventricular ejection fraction, alongside a stage-based approach.
02. Earlier recognition
Greater attention to prevention and recognising the condition early enough to intervene.
03. Treatment language and evidence
Revised therapy terminology and updated indications informed by newer evidence.
Ask your cardiologist which changes apply to your particular diagnosis. A guideline update does not mean every patient needs a new prescription. [1]
Understanding HFpEF and HFrEF
Heart failure means that the heart cannot meet the body’s needs as effectively as it should (see our overview of heart failure). It does not mean the heart has stopped. Problems with pumping, filling or both can contribute. [2]
HFrEF
Heart failure with reduced ejection fraction. The main pumping chamber has reduced emptying ability.
HFpEF
Heart failure with preserved ejection fraction. The proportion pumped out may be preserved, while abnormal relaxation and filling still cause problems.
Ejection fraction, usually measured with a 2D echocardiogram, is one part of the assessment. Your symptoms, examination and test findings also matter; a preserved percentage alone does not rule out heart failure. [3]
Understanding your medicines
Heart failure care may involve several medicines with different purposes. Ask what each one is intended to do, how to take it, and which side effects or changes should prompt a call to your care team. [4]
MRA stands for mineralocorticoid receptor antagonist in this treatment context. These medicines block effects of aldosterone. Kidney function and potassium may need monitoring. Suitability depends on the individual and the medicine being considered. [5]
Beta blockers are another medicine class used in heart failure care. They reduce the effects that make the heart beat too quickly or forcefully. Their role and dose depend on your clinical situation; they are not interchangeable with MRAs. [7]
Do not start, stop or change a medicine because of this article. If the plan is difficult to follow or causes problems, contact your treating clinician.
Prepare for a useful consultation
- Bring your latest echocardiogram, relevant blood tests and hospital discharge information.
- List medicines, doses, supplements and any problems taking them.
- Describe changes in breathing, swelling, activity or day-to-day wellbeing.
- Ask for a clear follow-up plan and the symptoms that need urgent attention.
Agree who to contact with questions, which monitoring is required and how to arrange repeat prescriptions. A written plan can help you and your family follow the advice consistently. [4]
What should I ask my doctor?
What does HFpEF mean?
HFpEF means heart failure with preserved ejection fraction. The heart can still eject a preserved proportion of the blood in its main pumping chamber, but abnormal filling and other problems can produce heart failure symptoms. Diagnosis requires a clinical assessment, not one number alone. [3]
Which guideline updates matter for me?
That depends on your heart failure type, symptoms, previous treatment and other conditions. Ask your clinician to explain which recommendation applies to you, its expected benefit, and any monitoring or alternatives. [1]
What does MRA mean in my treatment plan?
Here, MRA means mineralocorticoid receptor antagonist, a medicine class used in selected heart failure care. Ask why it is being considered and when kidney function and potassium should be checked. The acronym can mean something different in an imaging discussion. [5]
Does a new guideline mean I should change my medicines now?
No. Continue the plan agreed with your clinician unless they advise otherwise. Arrange a review if you want to understand the update or have concerns about your treatment; do not make changes on the basis of a headline.
What should I do if symptoms suddenly worsen?
Seek urgent medical help for severe breathlessness, chest pain or fainting. For less severe changes, follow your personalised action plan and contact your care team promptly. Do not wait for a routine appointment if you feel acutely unwell. [6]
Related Heartwise care
Sources and further reading
- ESC — 2026 heart failure guideline overview
- Heart Failure Matters — What is heart failure?
- Heart Failure Matters — Types of heart failure
- Heart Failure Matters — Questions for your doctor
- Heart Failure Matters — MRAs
- Heart Failure Matters — Warning signs
- American Heart Association — Heart failure medicines
Sources checked 9 November 2026.
