Heart & Circulation — Guide Hub
Heart disease is the world’s leading cause of death, responsible for around 18 million deaths globally each year. Yet the majority of premature heart disease is preventable. Diet, physical activity, blood pressure control, not smoking, and managing cholesterol and diabetes can dramatically reduce risk — and most of these changes can be made at any age.
This hub connects guides on the major heart conditions, procedures, medications, and recovery strategies. Whether you are newly diagnosed with a heart condition, preparing for a cardiac procedure, recovering from a heart attack, managing a long-term condition like atrial fibrillation or hypertension, or simply trying to protect your heart, this is your starting point.
If you are experiencing chest pain, sudden shortness of breath, or symptoms that could indicate a heart attack, call emergency services now — do not wait.
What’s in This Section
- Heart attack — warning signs, treatment, and what to expect
- Angina — stable and unstable angina management
- Atrial fibrillation — symptoms, stroke risk, and treatment
- High blood pressure — home monitoring and management
- Coronary angiography and angioplasty — what to expect
- Cardiac rehabilitation — after a heart attack or surgery
- Medications — statins, blood thinners, beta-blockers, and more
- Heart disease prevention — lifestyle and medical screening
- Peripheral artery disease (PAD) — leg pain when walking, poor circulation, foot care, and when to seek urgent help
- Stroke and TIA — closely linked to heart and circulation health
Start Here
The most important guides for anyone dealing with a heart condition:
- Early Warning Signs of a Heart Attack — Recognise the symptoms, including atypical presentations in women and younger adults.
- When to Seek Emergency Help for Chest Pain — A decision guide for chest pain — what’s urgent and what can wait.
- Heart Attack Treatment — What to Expect — What happens in hospital and in the days after a heart attack.
- Heart Failure: Symptoms, Causes, Diagnosis, and Treatment — What heart failure is, HFrEF vs HFpEF, medicines, and self-management.
- Atrial Fibrillation: Symptoms, Risks, and Treatment — The most common arrhythmia: what it is, stroke risk, and treatment options.
- Preventing Heart Disease: Lifestyle and Medical Screening — The evidence-based steps that most reduce risk.
- Cardiac Rehabilitation After a Heart Event — Why cardiac rehab matters and what it involves.
- Common Heart Medications and Their Side Effects — Plain-language guide to statins, ACE inhibitors, beta-blockers, and more.
- Understanding Coronary Angiography — What the procedure involves, how to prepare, and what the results mean.
Common Symptoms & When to Seek Urgent Help
Symptoms that warrant prompt (non-emergency) medical review:
- Chest discomfort or tightness on exertion that eases with rest
- Palpitations — an awareness of irregular, fast, or fluttering heartbeat
- Unexplained shortness of breath, especially on mild exertion
- Ankle or leg swelling
- Dizziness or near-fainting, especially with exertion
- A newly discovered irregular pulse
Call emergency services immediately for:
- Severe or sustained chest pain or pressure
- Chest pain spreading to the arm, neck, jaw, or back
- Sudden shortness of breath at rest
- Palpitations with dizziness, fainting, or loss of consciousness
- Sudden one-sided weakness, face drooping, or slurred speech (stroke)
- Any sudden collapse
See also: Early Warning Signs of a Heart Attack | Recognizing a Stroke FAST | CPR — Basic Life Support
Key Guides
Recognising Emergencies
- Early Warning Signs of a Heart Attack — Classic and atypical symptoms, including presentations in women and people with diabetes.
- When to Seek Emergency Help for Chest Pain — A practical decision guide to chest pain severity.
- Recognizing a Stroke FAST — A Practical Guide — Face drooping, arm weakness, speech difficulty, and time to call.
- TIA: Warning Signs You Shouldn’t Ignore — Transient ischemic attacks are warning strokes requiring urgent evaluation.
- CPR — Basic Life Support — What to do if someone collapses.
Understanding Heart Conditions
- Heart & Circulation Overview — A broad introduction to how the heart and circulation work and what can go wrong.
- Heart Failure: Symptoms, Causes, Diagnosis, and Treatment — What heart failure is, HFrEF vs HFpEF, ejection fraction, medicines, and prognosis.
- Atrial Fibrillation: Symptoms, Risks, and Treatment — The most common arrhythmia: causes, stroke risk, rate vs rhythm control, and anticoagulation.
- Angina — Symptoms & Management — Stable angina, unstable angina, and how each is managed.
- Heart Palpitations: When to Worry — Which palpitations are benign and which need investigation.
- Syncope and Fainting: Causes, Warning Signs, and When to Seek Help — Vasovagal syncope, orthostatic hypotension, arrhythmia-related fainting, and the red flags that require urgent assessment.
- Heart Attacks in Younger Adults: Hidden Causes — Why heart attacks happen in people under 50, especially women.
- Panic Disorder: Panic Attacks, Symptoms, and Treatment — Panic attacks can cause chest tightness, palpitations, shortness of breath, and dizziness that closely mimic cardiac symptoms. However, new, severe, or unusual chest pain — particularly if crushing, radiating to the arm or jaw, or associated with fainting — should always be assessed urgently rather than attributed to panic. Both conditions can coexist.
Structural Heart Disease
- Cardiomyopathy: Symptoms, Causes, Diagnosis, and Treatment — Disease of the heart muscle itself: dilated, hypertrophic, and restrictive types, causes including genetics and alcohol, and treatments including ICDs.
- Heart Valve Disease: Symptoms, Causes, Diagnosis, and Treatment — Aortic stenosis, mitral regurgitation, valve repair and replacement, and TAVI explained for patients.
- Pacemakers and ICDs: What They Do and What to Expect — Pacemakers, implantable cardioverter-defibrillators, and cardiac resynchronisation therapy: why they are used, implantation, follow-up, and living with a device.
Diagnosis and Procedures
- Understanding Coronary Angiography — How cardiac catheterisation works, what to expect on the day, and interpreting results.
- Echocardiography Explained: What an Echo Shows and What to Expect — How cardiac ultrasound works, the difference between TTE, TOE, and stress echo, ejection fraction explained, and what to expect on the day.
- Coronary Artery Calcium Score — A CT scan that measures calcium deposits in coronary arteries, providing an early indicator of plaque burden and heart attack risk.
- ApoB vs LDL Cholesterol — Which Matters More? — Why ApoB may be a more accurate marker of cardiovascular risk than standard LDL, and when it changes clinical decisions.
Treatment and Medications
- Heart Attack Treatment — What to Expect — Angioplasty, stenting, clot-busting drugs, and in-hospital care.
- Common Heart Medications and Their Side Effects — Statins, ACE inhibitors, beta-blockers, blood thinners, and diuretics explained.
- Aspirin vs Clopidogrel — Which Is Better for Heart Disease? — Comparing antiplatelet options and when combination therapy is used.
- Statin Side Effects: What the Evidence Actually Shows — Separating myth from fact on statin muscle pain and other concerns.
Blood Pressure
- Hypertension: Symptoms, Causes, Diagnosis, Treatment, and Home Blood Pressure Monitoring — A comprehensive patient guide to high blood pressure: who is at risk, how it is diagnosed, lifestyle and medication treatment options, and home monitoring.
- Blood Pressure at Home: How to Measure Correctly — Technique, timing, and what the numbers mean.
- 2025 High Blood Pressure Guideline — Key Updates — What changed in the latest hypertension management guidance.
Kidney Disease and the Heart
Chronic kidney disease and cardiovascular disease are closely linked — each worsens the other through shared mechanisms involving blood pressure, fluid balance, inflammation, and metabolic change. CKD is an independent cardiovascular risk factor; conversely, poorly controlled blood pressure and heart disease drive kidney damage.
- Chronic Kidney Disease Hub — central CKD navigation including the cardiorenal relationship, complications, and management
- Managing Chronic Kidney Disease — blood pressure targets, medicines, and cardiovascular risk reduction in CKD
Peripheral Artery Disease
Peripheral artery disease (PAD) is narrowing of the arteries supplying the legs — caused by the same atherosclerosis that blocks coronary and carotid arteries. PAD is a marker of widespread arterial disease: people with PAD have a significantly elevated risk of heart attack and stroke, often without cardiac symptoms. It is under-recognised and undertreated.
- Peripheral Artery Disease: Leg Pain, Circulation, and When to Seek Help — claudication, poor circulation, foot care, risk factors, diagnosis, vascular procedures, and urgent limb red flags
Prevention
- Preventing Heart Disease: Lifestyle and Medical Screening — Diet, exercise, smoking cessation, cholesterol control, and screening checks.
- Abdominal Aortic Aneurysm Screening: Who Should Be Tested and When — What an AAA is, why rupture is so dangerous, who should have an ultrasound, and how results guide surveillance and treatment.
- Stroke Prevention — How to Reduce Your Risk — Blood pressure, atrial fibrillation, smoking, cholesterol, and the medications that reduce stroke risk.
- Sleep Apnoea — Causes, Risks, and Treatment — Untreated sleep apnoea significantly raises the risk of high blood pressure, heart attack, stroke, and arrhythmia.
Recovery and Rehabilitation
- Cardiac Rehabilitation After a Heart Event — Exercise, education, and psychological support after heart attack or surgery.
- Living With Heart Failure: Daily Care, Medicines, and Monitoring — Self-management for people living with heart failure: medicines, daily weight, exercise, and care planning.
- Stroke Recovery and Rehabilitation — Rehabilitation roles, physical and cognitive recovery, secondary prevention, and caregiver support after stroke — closely linked to cardiovascular risk management.
Heart Failure
- Heart Failure: Symptoms, Causes, Diagnosis, and Treatment — Comprehensive patient guide to heart failure causes, types, medicines, and prognosis.
- Heart Failure Warning Signs: When Symptoms Need Urgent Care — Which symptoms need emergency care and how to track your health at home.
- Living With Heart Failure: Daily Care, Medicines, and Monitoring — Medicines, daily weights, salt and fluid, exercise, vaccinations, and care planning.
FAQ
Q: What is heart disease? Heart disease covers a range of conditions affecting the heart and blood vessels — most commonly coronary artery disease (blocked arteries), which is the leading cause of heart attacks.
Q: What are the warning signs of a heart attack? Classic symptoms are central chest pain or pressure, pain radiating to the arm, neck, or jaw, shortness of breath, sweating, and nausea. Women and people with diabetes may have atypical symptoms — back pain, fatigue, indigestion. Call emergency services immediately if you suspect a heart attack.
Q: What is atrial fibrillation? The most common heart arrhythmia: the upper chambers beat chaotically, causing an irregular pulse, palpitations, and breathlessness. AF greatly increases stroke risk and needs active management.
Q: How can I reduce my risk of heart disease? The most effective steps: not smoking, eating a heart-healthy diet, exercising regularly, maintaining healthy weight, keeping blood pressure and cholesterol controlled, managing diabetes, and limiting alcohol.
Q: What is coronary angiography? A procedure where dye is injected into the coronary arteries via a catheter so X-rays can reveal blockages. It can be combined with angioplasty and stenting to restore blood flow.
Q: What is cardiac rehabilitation? A supervised programme of exercise, education, and psychological support after a cardiac event. It reduces the risk of another event by ~25%.
Q: What medications are used for heart conditions? Statins, ACE inhibitors, beta-blockers, antiplatelet drugs (aspirin, clopidogrel), anticoagulants, and diuretics — depending on the condition.
Q: What is the difference between angina and a heart attack? Angina is temporary chest pain during exertion caused by reduced blood flow, which resolves with rest or nitrates. A heart attack is a complete arterial blockage with permanent muscle damage if not treated urgently.
Q: How does high blood pressure affect heart health? It forces the heart to overwork and damages blood vessels, raising the risk of heart attack, stroke, heart failure, and kidney disease. It usually has no symptoms.
Q: When should I call an ambulance? Immediately for severe chest pain, chest pain with arm or jaw pain, sudden breathlessness at rest, collapse, or symptoms that could be stroke. Do not drive yourself.
Heart & Circulation by the Numbers
- #1 cause of death globally: ~18 million deaths annually (WHO, 2024).
- 80% of premature heart disease and stroke is preventable.
- High blood pressure affects more than 1 billion people worldwide.
- Atrial fibrillation affects more than 33 million people globally.
- Cardiac rehab reduces risk of repeat heart events by ~25%.
- Half of heart attack deaths occur before the person reaches hospital.
Featured Posts
- High Blood Pressure in 2025: More Than Just Numbers — How the 2025 AHA/ACC guideline reframes hypertension as a brain health issue, and why earlier treatment and personalised risk tools are changing the conversation.
Further Reading
- NHS — Heart and circulatory diseases — UK patient information on heart disease prevention and conditions.
- American Heart Association — Comprehensive patient resources, guidelines, and lifestyle guidance.
- European Society of Cardiology — Patient Resources — Evidence-based European cardiology patient information.
- World Heart Federation — Global heart disease statistics and prevention campaigns.
Related Guides
- Peripheral Artery Disease: Leg Pain, Circulation, and When to Seek Help — PAD is part of the same atherosclerotic spectrum as coronary artery disease; people with PAD face elevated heart attack and stroke risk
- Stroke — Symptoms, Emergency Response, and Treatment Time Windows
- Emergencies — Guide Hub
- Chronic Kidney Disease Hub — kidney disease raises cardiovascular risk; the cardiorenal relationship, blood pressure, and management
- Sarcopenia: Muscle Loss, Strength, and Healthy Aging — muscle deconditioning in heart failure and cardiac rehabilitation
- Cancer — Guide Hub — Some cancers affect the heart; cardiac toxicity from cancer treatment is an important shared topic.
- Preventive Health — Guide Hub
- Hospital Discharge and Recovery — cardiac discharge planning; medicines, follow-up, warning signs, and cardiac rehabilitation referral
- Medication Safety: How to Avoid Common Medicine Problems — blood thinners, blood pressure medicines, polypharmacy, and medication review
Educational only — not a substitute for professional medical advice.