Each year, approximately 805,000 Americans suffer a heart attack — one every 40 seconds. Globally, myocardial infarction is the single leading cause of death. Despite this, survival rates have improved dramatically over the past four decades, driven largely by one factor: faster recognition and treatment. The "golden hour" concept reflects the reality that every minute a coronary artery remains blocked, heart muscle dies irreversibly. Recognising symptoms and calling emergency services immediately is the most important intervention any person can make.
Classic Warning Signs
The classic heart attack presentation involves sudden, severe chest pain or pressure — often described as an elephant sitting on the chest, a tight squeezing, or a heavy crushing sensation — lasting more than a few minutes. Associated symptoms include pain or discomfort radiating to the left arm, both arms, the jaw, neck, upper back, or stomach; cold sweats; nausea or vomiting; and sudden shortness of breath. Onset may occur at rest, during mild activity, or even during sleep. Unlike angina (which resolves with rest or nitroglycerin within minutes), heart attack pain persists.
Atypical Presentations — Especially in Women
Approximately one in four heart attacks presents without the classic chest-centred pain, and these atypical presentations are disproportionately common in women, people with diabetes, and older adults. Symptoms may include unexplained, severe fatigue — sometimes for days before the event; jaw, neck, or upper back discomfort; nausea, indigestion, or vomiting; lightheadedness or sudden dizziness; and shortness of breath without chest pain. The tragically common error is dismissing these symptoms as anxiety, indigestion, or musculoskeletal pain. When in doubt, call emergency services — the cost of a false alarm is infinitely lower than the cost of delayed treatment.
What to Do in an Emergency
If you or someone near you experiences potential heart attack symptoms: (1) Call emergency services immediately — do not drive yourself. (2) Chew (not swallow whole) one regular aspirin (325 mg) or four low-dose aspirins (81 mg each) if available and not allergic — this begins inhibiting the platelet aggregation driving the clot. (3) Loosen tight clothing and sit or lie comfortably. (4) If the person loses consciousness and stops breathing normally, begin CPR. Modern emergency cardiac care — angioplasty within 90 minutes of hospital arrival (door-to-balloon time) — can fully restore blood flow and prevent permanent damage when accessed promptly.
Frequently Asked Questions
How is a heart attack different from cardiac arrest?
A heart attack is a circulation problem — a blocked artery causing heart muscle damage while the heart continues to beat. Cardiac arrest is an electrical problem — the heart suddenly stops beating effectively. A heart attack can trigger cardiac arrest. Cardiac arrest requires immediate CPR and defibrillation; a heart attack requires emergency catheterisation. Both are life-threatening emergencies requiring immediate response.
Can you have a "silent" heart attack?
Yes — approximately 45% of heart attacks are "silent," producing minimal or no recognisable symptoms. They are frequently discovered incidentally on ECG or echocardiography performed for other reasons. Silent heart attacks carry similar long-term risks for future events and heart failure as symptomatic ones, underscoring the importance of regular cardiovascular risk assessment.
Sources
- American Heart Association. Heart Attack Symptoms. 2023.
- CDC. Heart Disease Facts. 2023.
- Mayo Clinic. Heart attack — Symptoms and causes. 2023.