Understanding the Warning Signs of a Heart Attack
Chest pain isn't the only symptom. Learn the often-overlooked signs of a heart attack — and why acting fast within the golden hour saves lives.
Dr. Priya Nair
Interventional Cardiologist, iHealthPro Hospital
What Happens During a Heart Attack?
A heart attack (myocardial infarction) occurs when blood flow to a section of the heart muscle is suddenly blocked, usually by a blood clot forming on a ruptured atherosclerotic plaque. Without oxygenated blood, heart muscle cells begin to die within minutes. The extent of permanent damage depends critically on how quickly blood flow is restored.
The Classic Symptoms — But Not Always Present
The textbook heart attack symptom is a crushing, pressure-like chest pain radiating to the left arm or jaw. While this presentation is common, studies show that up to 30% of heart attacks — particularly in women, elderly patients, and people with diabetes — occur with atypical or silent symptoms.
Warning Signs You Should Never Ignore
Beyond chest pain, the following symptoms warrant immediate emergency attention: unexplained breathlessness at rest or mild exertion; cold sweats or a sudden sense of impending doom; nausea, indigestion, or vomiting not explained by a meal; pain or discomfort in the upper back, neck, jaw, or either arm; unusual fatigue lasting days, especially in women; and light-headedness or sudden fainting. If two or more of these occur together, call emergency services immediately.
Why the Golden Hour Matters
Every 60 seconds of untreated heart attack destroys more heart muscle. Modern interventional cardiology — specifically primary percutaneous coronary intervention (primary PCI), commonly called angioplasty — can open the blocked artery and restore blood flow within minutes when performed in a timely fashion. At iHealthPro, our door-to-balloon time averages under 60 minutes, which is among the fastest in the region. Arriving early gives us the best chance to minimise damage and preserve heart function.
High-Risk Groups: Who Should Be Most Vigilant?
Individuals with any of the following risk factors should be particularly attentive to heart attack warning signs: hypertension, diabetes, high cholesterol, smoking, obesity, a family history of heart disease, or a prior history of heart disease or stroke. For these groups, we recommend a comprehensive cardiovascular risk assessment with a cardiologist at least annually.
What To Do If You Suspect a Heart Attack
Call 108 (ambulance) immediately — do not drive yourself. While waiting, sit or lie down in a comfortable position. If you are not allergic to aspirin and have not been advised against it, chew (not swallow) a 325 mg aspirin tablet. Loosen tight clothing. Stay calm and try to keep others around you calm. Do not eat or drink anything further. Be ready to describe your symptoms, their onset, and your medical history to the emergency team.
Key Takeaways
- 1Chest pain is the classic symptom but not always present — watch for breathlessness, sweating, nausea, and jaw/arm pain.
- 2Women, elderly patients, and diabetics are more likely to have atypical or silent heart attacks.
- 3Every minute matters — call 108 immediately; do not wait to see if it passes.
- 4Chewing aspirin (if not contraindicated) while waiting for the ambulance can help.
- 5The best outcomes occur when angioplasty is performed within 90 minutes of symptom onset.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before making any health decisions. If you are experiencing a medical emergency, call 108 immediately.
About the Author
Dr. Priya Nair
Interventional Cardiologist, iHealthPro Hospital
Dr. Priya Nair is an Interventional Cardiologist with 18 years of experience and a Fellow of the American College of Cardiology (FACC). She has performed over 4,000 catheterisation procedures and is a leading expert in structural heart disease and heart failure management.
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