Heart failure occurs when your heart muscle becomes weakened or stiff and cannot pump blood effectively enough to meet your body’s needs. Despite the name, heart failure doesn’t mean your heart has stopped working—rather, it’s working less efficiently than it should. This can result from damage to the heart muscle following a heart attack, from long-standing high blood pressure, valve disease, or various other cardiac conditions. The reduced pumping efficiency leads to fluid accumulation in the lungs and body tissues, causing breathlessness and swelling.
Heart failure is classified by ejection fraction—the percentage of blood pumped out with each heartbeat. Heart failure with reduced ejection fraction (HFrEF) means the heart’s pumping action is weakened. Heart failure with preserved ejection fraction (HFpEF) means the heart pumps normally but is too stiff to fill properly. Both types cause similar symptoms but require different treatment approaches. Understanding which type you have is essential for optimal management.
While heart failure is a serious condition, modern treatments have transformed outcomes dramatically. Advances in medications, device therapy, and comprehensive care programmes mean that many patients can achieve excellent symptom control and quality of life. Early diagnosis and appropriate treatment can slow disease progression, reduce hospitalizations, and help you maintain independence and activity levels.
Difficulty breathing, especially when lying flat, during activity, or waking at night short of breath
Persistent tiredness and reduced ability to perform daily activities or exercise
Fluid retention causing swelling in feet, ankles, legs, or abdomen
Gaining more than 2kg (4-5 pounds) in a week due to fluid accumulation
Palpitations or awareness of fast, irregular, or pounding heartbeat
Chronic cough or wheezing, sometimes producing pink-tinged mucus
Diagnosing heart failure requires careful assessment of your symptoms, physical examination findings, and specialized testing. During examination, specific signs such as fluid in the lungs, raised jugular venous pressure, or peripheral oedema help confirm the diagnosis. Blood tests, particularly measuring BNP (brain natriuretic peptide) levels, provide important diagnostic information—elevated BNP strongly suggests heart failure and helps assess severity.
Cardiac imaging is essential to confirm heart failure, determine its type and severity, and identify the underlying cause. Echocardiography provides detailed assessment of heart structure, valve function, and most importantly, measures ejection fraction to classify the type of heart failure. Cardiac MRI offers additional information about heart muscle damage, scarring, and specific causes when needed. These imaging studies guide treatment decisions and establish a baseline for monitoring response to therapy.
Comprehensive evaluation includes investigating potential causes of heart failure—such as coronary artery disease, valve problems, or cardiomyopathy—as treating the underlying condition can significantly improve outcomes. Additional tests like ECG, chest X-ray, exercise testing, and sometimes coronary imaging help build a complete picture. This thorough diagnostic approach ensures accurate classification of your heart failure and enables personalized treatment planning.
Treatment for heart failure aims to improve your symptoms, enhance quality of life, slow disease progression, and reduce the risk of hospitalization. Modern therapies have dramatically improved outcomes for heart failure patients.
Heart failure medications have transformed over recent years, with several drug classes proven to improve both symptoms and survival. Treatment typically includes ACE inhibitors or angiotensin receptor blockers, beta-blockers, mineralocorticoid receptor antagonists, and SGLT2 inhibitors—a newer class showing remarkable benefits. Diuretics help manage fluid retention and breathlessness. Starting these medications requires careful monitoring and gradual dose adjustments to reach optimal levels. Regular blood tests monitor kidney function and electrolytes. Most patients notice significant symptom improvement with appropriate medical therapy.
When lifestyle changes are insufficient to control blood pressure, medications are highly effective and well-tolerated. Several drug classes are available, including ACE inhibitors, angiotensin receptor blockers (ARBs), calcium channel blockers, diuretics, and beta-blockers. Dr Cassar selects medications based on your blood pressure level, other health conditions, and potential side effects. Many people require two or more medications to achieve optimal control. Treatment is carefully monitored and adjusted to ensure effectiveness while minimizing side effects.
For selected patients, cardiac devices can significantly improve outcomes. Implantable cardioverter defibrillators (ICDs) protect against dangerous heart rhythms. Cardiac resynchronization therapy (CRT) uses a special pacemaker to coordinate heart contractions, improving pumping efficiency in patients with specific electrical abnormalities. Dr Cassar works closely with specialist electrophysiology colleagues to identify patients who would benefit from device therapy and coordinates this treatment when appropriate.
Identifying and treating the underlying cause of heart failure can dramatically improve outcomes. If coronary artery disease caused heart failure, revascularization procedures may help. Severe valve disease may require repair or replacement. Controlling blood pressure and treating arrhythmias like atrial fibrillation are essential. In some cases, specific treatments target particular causes of heart failure such as inflammatory conditions or infiltrative diseases. Comprehensive assessment ensures all treatable causes are addressed.
Heart failure doesn’t mean your heart has stopped working—it means your heart muscle has become weakened or stiff and can’t pump blood as effectively as it should. Think of it like a pump that’s not working at full strength. Your heart is still beating, but it’s not pumping enough blood to meet your body’s needs. This can happen after a heart attack, from long-standing high blood pressure, valve problems, or other heart conditions. The reduced pumping leads to fluid building up in your lungs and body tissues, which causes breathlessness and swelling.
No. The term “heart failure” is frightening, but it doesn’t mean your heart is about to stop or that you’re dying. It’s a long-term condition that can be managed. With modern treatments—including excellent medications, lifestyle changes, and sometimes devices—many people with heart failure live well for years. The key is early diagnosis and proper treatment. Think of it as a condition to be managed rather than an immediate death sentence. Your cardiologist will help you understand your individual situation and outlook.
This varies greatly depending on many factors—how early it’s caught, how severe it is, your age, other health conditions, and how well you respond to treatment. Modern treatments have dramatically improved outlook. Research shows that more than half of people with heart failure survive at least 5 years, and many live much longer. Some people diagnosed early with good treatment can have a near-normal life expectancy. Your individual prognosis depends on your specific situation, which your cardiologist can discuss with you. The most important thing is getting the right treatment and sticking with it.
These terms describe two types of heart failure. HFrEF (heart failure with reduced ejection fraction) means your heart’s pumping action is weakened—it’s not squeezing strongly enough. HFpEF (heart failure with preserved ejection fraction) means your heart pumps normally but has become too stiff to fill properly with blood. Both cause similar symptoms like breathlessness and fatigue, but they require different treatments. Your echocardiogram (heart ultrasound) shows which type you have by measuring your ejection fraction—the percentage of blood pumped out with each heartbeat.
Heart failure develops when something damages or overworks your heart muscle over time. Common causes include heart attacks (which scar the heart muscle), long-standing high blood pressure (which makes the heart work too hard), valve disease, irregular heartbeats like atrial fibrillation, and viral infections affecting the heart. Sometimes excessive alcohol, diabetes, or inherited conditions affect the heart muscle. Understanding what caused your heart failure is important because treating the underlying cause can significantly improve outcomes.
Key warning signs include worsening breathlessness (especially when lying flat or during activities that were previously manageable), sudden weight gain (more than 2kg in a week), increased swelling in your ankles or legs, waking up breathless at night, persistent coughing or wheezing, and feeling more tired than usual. If you experience any of these, contact your doctor promptly—catching worsening heart failure early allows for treatment adjustments before you need hospital admission.
Diagnosis starts with discussing your symptoms and examining you for signs like fluid in the lungs or swelling. A simple blood test called BNP (brain natriuretic peptide) is very helpful—elevated levels strongly suggest heart failure. An echocardiogram (ultrasound of your heart) is essential—it shows how well your heart is pumping, measures your ejection fraction, and checks your valves. Your doctor might also arrange an ECG, chest X-ray, and blood tests to check your kidneys and identify the underlying cause. Sometimes cardiac MRI provides additional detailed information about your heart muscle.
Modern heart failure treatment typically involves several medications that work together. Most people take an ACE inhibitor or similar drug (ARB), a beta-blocker, a mineralocorticoid receptor antagonist (MRA), and often an SGLT2 inhibitor—newer drugs showing remarkable benefits. You’ll likely also need diuretics (water tablets) to manage fluid and reduce breathlessness. Starting these medications requires careful monitoring with gradual dose increases, but most patients notice significant symptom improvement. These medications aren’t just treating symptoms—they’re helping your heart work better and helping you live longer.
Current evidence suggests moderation rather than severe restriction. You should avoid excessive salt (aim for less than 5 grams daily—about one teaspoon), which means avoiding obviously salty foods like crisps, processed meats, takeaways, and not adding salt at meals. However, overly strict salt restriction (less than 1.5 grams daily) may actually be harmful. Fluid restriction (1.5-2 litres daily) is usually only needed for people with severe heart failure or those retaining significant fluid despite medication. Your cardiologist will give you personalised advice based on your individual situation—there’s no one-size-fits-all approach.
Yes, and you should! Regular moderate exercise is actually one of the best things you can do. It strengthens your heart, improves symptoms, helps you feel better, and may help you live longer. Start slowly—even 10 minutes of gentle walking helps. Gradually build up as you feel able. Cardiac rehabilitation programs are excellent for getting started safely with supervised exercise and education. Avoid pushing yourself too hard—you should be able to hold a conversation while exercising. Talk to your cardiologist before starting any exercise program to ensure it’s safe for your situation.
Some people with heart failure benefit from special heart devices. An ICD (implantable cardioverter defibrillator) protects against dangerous heart rhythms and is considered if your heart’s pumping function is significantly reduced. CRT (cardiac resynchronisation therapy) is a special pacemaker that helps coordinate your heart’s contractions, improving pumping efficiency for people with specific electrical problems. Not everyone needs these devices—your cardiologist will assess whether you’d benefit based on your heart function, symptoms, and heart rhythm pattern.
Beyond medication, several lifestyle changes make a real difference. Stop smoking if you smoke—this is crucial. Maintain a healthy weight through balanced eating and regular activity. Limit alcohol (excessive drinking can weaken the heart further). Monitor your weight daily—sudden increases indicate fluid retention. Stay active within your limits. Manage stress. Get flu and pneumonia vaccinations. These changes aren’t just helpful—they’re essential parts of managing heart failure effectively alongside your medications.
Yes. Daily weighing is one of the most important things you can do. Weight gain often happens before you notice symptoms, so catching it early allows treatment adjustments before fluid buildup becomes severe. Weigh yourself at the same time each day (ideally morning after using the toilet, before eating), wearing similar clothing. Write it down. If you gain more than 2kg (4-5 pounds) in a week, contact your doctor—your diuretic dose may need adjusting. Think of your scales as an early warning system.
In some cases, yes. If heart failure was caused by something reversible—like an underactive thyroid, excessive alcohol, high blood pressure, or a heart valve problem that can be fixed—treating the underlying cause can significantly improve or even reverse heart failure. Even when complete reversal isn’t possible, modern treatments can dramatically improve heart function, reduce symptoms, and slow progression. Many people see substantial improvement with optimal medical therapy. The earlier heart failure is caught and treated, the better the chances of improvement.
You should see a cardiologist if you have symptoms suggesting heart failure (breathlessness, fatigue, ankle swelling, breathlessness when lying flat), if you’ve been diagnosed with heart failure and want specialist assessment, or if your symptoms aren’t well controlled despite treatment. Specialist assessment ensures accurate diagnosis through advanced cardiac imaging, access to the latest medications and treatments, and personalised management plans. Early specialist input often leads to better outcomes and improved quality of life.
Dr Cassar provides comprehensive heart failure assessment and management at his Hampshire clinics. With expertise in advanced cardiac imaging including echocardiography and cardiac MRI, he can accurately diagnose heart failure, determine its type and severity, and identify underlying causes. He’ll create a personalised treatment plan including optimal medication combinations, lifestyle advice, and cardiac rehabilitation referrals. When needed, he coordinates with specialist electrophysiology colleagues for device therapy. His detailed imaging expertise allows precise monitoring of how your heart responds to treatment over time.
Dr Cassar will discuss your symptoms in detail—when breathlessness occurs, what makes it better or worse, how it affects your daily activities, and any swelling or other symptoms. He’ll examine your heart and lungs, check for fluid retention, and review your medications. You’ll typically have an ECG and blood tests including BNP levels. An echocardiogram provides detailed assessment of your heart’s pumping function and valves. Based on these results, you’ll discuss your diagnosis, what it means, all treatment options, and create a management plan tailored to you. The goal is helping you understand your condition and optimising treatment to improve your symptoms and outlook.
Contact Dr Cassar’s practice directly to book an appointment. He sees patients at Candover Clinic in Basingstoke and in Winchester. If you’re experiencing symptoms of heart failure or have been diagnosed and want specialist assessment, early consultation ensures you get comprehensive evaluation and optimal treatment.
There are excellent resources to support you in managing heart failure:
