World Heart Day: Heart Attack, Brain Attack, Leg Attack

World Heart Day is a reminder to look beyond the heart. The arteries supplying the brain, legs and feet can be affected by the same process of plaque build-up that contributes to heart disease. In this video, Dr Andrew Choong explains why leg symptoms can be an important warning about the wider circulation.

Possible heart attack, stroke or sudden loss of circulation to a limb requires emergency care. Call 995 in Singapore, or your local emergency number elsewhere. Do not wait for a clinic appointment or a WhatsApp reply.

Heart Attack, Brain Attack and Leg Attack: What Is the Connection?

Arteries carry oxygen-rich blood from the heart to the body. Atherosclerosis is the build-up of plaque within their walls. It can narrow an artery, and a clot can sometimes suddenly block blood flow. The effect depends on which part of the body loses its blood supply.

• Heart: a blocked coronary artery can cause a heart attack.

• Brain: a blocked artery can cause an ischaemic stroke, sometimes called a brain attack. Not every stroke is due to blockage; bleeding can also cause a stroke.

• Legs and feet: narrowed or blocked arteries can cause peripheral arterial disease (PAD). Severe loss of blood supply can threaten the foot or leg.

These connections do not mean that everyone with leg pain has heart disease or will have a stroke. They mean that confirmed PAD deserves attention to both the leg and overall cardiovascular risk. Carotid artery disease, affecting the neck arteries supplying the brain, is another part of this wider picture.

What Does “Leg Attack” Mean?

“Leg attack” is an awareness phrase rather than a precise diagnosis. In the video, it draws attention to a foot threatened by severely impaired circulation: pain at rest, a wound that does not heal, blackened toes or infection. The established term for longstanding severe arterial insufficiency of this kind is chronic limb-threatening ischaemia (CLTI).

This differs from acute limb ischaemia, where blood flow falls suddenly. A suddenly painful, cold or pale foot, particularly with new numbness or weakness, is an emergency. A longstanding problem can also deteriorate abruptly. Neither situation should be managed by waiting to see whether an exercise programme helps.

Persistent foot pain at rest, an ulcer or blackened tissue needs urgent assessment. Fever, spreading infection or rapidly worsening symptoms make immediate medical attention particularly important. Read about diabetic foot and wound care for the relationship between circulation, infection and healing.

Why the Same Risk Factors Matter

Dr Choong highlights smoking, diabetes, high blood pressure, high cholesterol, kidney disease, excess weight, inactivity and an unhealthy diet. These can affect more than one area of the arterial circulation.

Smoking and diabetes are particularly important in PAD. A person with diabetes may also have reduced sensation, so a serious foot problem may cause less pain than expected. High blood pressure is an important stroke risk factor. Managing these risks is relevant even when the symptom that first brings someone to the clinic is in the leg.

Care may include help to stop smoking, appropriate activity, foot care and prescribed treatment for blood pressure, cholesterol and diabetes. Medicines and exercise plans should be individualised; do not start or stop blood-thinning medicine on the basis of a video.

When Should Leg Symptoms Be Assessed?

Recurring calf, thigh or buttock discomfort during walking that improves after stopping can be claudication. It is worth assessing rather than assuming it is simply age or poor fitness. Joint, nerve and muscle conditions can cause similar symptoms, so the pattern alone does not establish PAD.

An assessment reviews the symptoms, risk factors, pulses and feet. Depending on the findings, ankle or toe pressure measurements and vascular ultrasound may help assess circulation. Further imaging is selected when it will guide care; not everyone needs every test.

Many patients with stable walking symptoms begin with medicines, risk-factor management and structured exercise. For selected patients with a threatened foot or continuing major limitations, leg angioplasty and stenting or bypass surgery may be discussed. The decision depends on the circulation, overall health, likely benefit and risks.

Act on Warning Signs; Plan Non-Emergency Care

Chest discomfort with breathlessness, sweating or collapse, or sudden facial weakness, arm weakness or speech difficulty, needs emergency assessment. Stroke symptoms that disappear still need urgent emergency evaluation.

For stable leg symptoms or a planned second opinion, contact Andrew Choong Vascular Surgery at Mount Elizabeth Novena Specialist Centre, Singapore. Bring previous scan images, reports and a medication list; the visit preparation guide can help. You can also watch the World Heart Day video or explore the short explanation of walking-related leg pain.