Heart Attack Warning Signs and First Aid: Why 10 Minutes Is the Rule

The most dangerous thing about a heart attack is not the pain. It is the waiting. People talk themselves out of calling an ambulance because they are not sure, because it might be indigestion, because they do not want to make a fuss. Heart muscle dies while that conversation happens.

Australian guidance removes the judgement call and gives you a clock instead: severe, worsening, or longer than 10 minutes means call 000. You do not need to be sure it is a heart attack.

Heart attack warning signs

A heart attack can build slowly over minutes rather than arriving as sudden collapse. The signs the Heart Foundation and Australian resuscitation guidance list are:

• Pain, pressure, heaviness or tightness in the chest — often described as a squeezing or a weight, not a sharp stab
• Discomfort spreading to the neck, jaw, shoulder, back or arms (one or both)
• Shortness of breath
• Nausea or vomiting, or what feels like indigestion
• Sweating, often a cold sweat
• Dizziness or feeling light-headed
• Pale skin
• Extreme, unexplained fatigue

Symptoms may come and go. They do not have to be dramatic, and they do not have to include all of the above. Any of them, severe or lasting more than 10 minutes, is enough.

Heart attacks that do not involve chest pain

A heart attack can happen without any chest pain at all. When it does, Australian resuscitation guidance notes that shortness of breath is the most common symptom. This is worth knowing, because a person with no chest pain is far more likely to wait.

Women

Here it is worth being precise, because this is widely misreported. According to the Heart Foundation, chest pain is the most common heart attack symptom for women and for men. What differs is the pattern at the edges: women under 50 more often present without chest pain, with symptoms such as jaw, shoulder or back pain, nausea, dizziness, shortness of breath, indigestion or fatigue.

So the useful takeaway is not “women get different symptoms” — that framing can talk a woman out of recognising the commonest presentation. It is that the absence of chest pain does not rule a heart attack out, particularly in a younger woman.

People with diabetes, and older people

Diabetes can alter the way pain is felt, which raises the chance of a “silent” heart attack — one with little or no chest pain. Older people also present atypically more often, with breathlessness, dizziness, confusion, fainting, weakness or fatigue rather than classic chest pain.

If you or someone you care for falls into one of these groups, lower your threshold for calling 000, not raise it.

What to do: heart attack first aid

1. Stop and rest. Have the person stop what they are doing immediately and sit or lie in whatever position is most comfortable. Do not let them walk it off.
2. Call Triple Zero (000) if symptoms are severe, worsening quickly, or have lasted longer than 10 minutes. Say “ambulance”, then describe the chest pain. Do not wait to be certain.
3. Help them take their own angina medication. If they have been prescribed a tablet or an oral spray for chest pain, assist them to take it exactly as they have been directed. Do not give someone else's medication.
4. Stay calm and stay with them. Loosen tight clothing. Reassure them. Do not leave them alone, and do not let them drive.
5. Aspirin — see the note below. Ask the 000 call taker; they can advise for the specific situation.
6. Unlock the front door and move anything blocking the path for a stretcher, if you have someone to spare.
7. If they become unresponsive and are not breathing normally, start CPR and send someone for an AED. Follow DRSABCD.

Heart attack or cardiac arrest? They are not the same

These two get used interchangeably and they need completely different responses. The difference you can see from across a room is simple: is the person awake?

A heart attack can trigger a cardiac arrest, which is exactly why you call the ambulance early and stay with the person rather than waiting to see what happens.

Angina or a heart attack?

People with diagnosed angina often know their own pattern — chest discomfort that comes on with exertion and settles with rest and their spray or tablet. The point at which that becomes an emergency:

• The pain is more severe than usual, or comes on at rest
• It does not settle after taking their medication as directed
• It lasts longer than 10 minutes
• It keeps coming back

Any of those means call 000. If someone has an action plan from their cardiologist, follow that plan.

Preparing before it happens

• Keep a current medication list — especially blood thinners, which change what a hospital can do and how quickly.
• Know the history — previous heart attack, stents, bypass, pacemaker, implanted defibrillator.
• Put your emergency contacts somewhere findable that does not depend on unlocking a phone. See how to set up your emergency contacts.
• Get a Heart Foundation action plan and put it on the fridge, so nobody has to remember the 10-minute rule under pressure.
• Learn CPR. A cardiac arrest survived is almost always one where a bystander started compressions.

Related reading: what to say when you call an ambulance, how to use a defibrillator, and the recovery position. If you take a blood thinner or have a diagnosed heart condition, this is exactly what a medical ID is for — you can create your emergency profile in a few minutes.

Heart attack FAQs

Sources

• ANZCOR Guideline 9.2.1 — Recognition and First Aid Management of Suspected Heart Attack — symptoms, rest, assisting with prescribed angina medication, the aspirin suggestion and its grading, and the 10-minute rule.
• Heart Foundation — Heart attack warning signs — the warning sign list and the action plan.
• Heart Foundation — Women and cardiovascular disease — chest pain as the most common symptom for women and men, and presentation in women under 50.
• Better Health Channel — Heart attack — background and risk factors.
• Triple Zero (000) — when and how to call.

Disclaimer: This article is general first aid information, not medical advice or a substitute for accredited first aid training. In an emergency, always call Triple Zero (000). For non-urgent health advice, call healthdirect on 1800 022 222 (NURSE-ON-CALL 1300 60 60 24 in Victoria, 13 HEALTH 13 43 25 84 in Queensland) or speak with your GP. Never start, stop or change a medication on the basis of a web page. MedibandPlus stores and provides access to a member’s own medical information; it does not assess, diagnose or treat any condition.

More first aid guides

• How to do CPR: a beginner’s guide
• How to use a defibrillator (AED)
• DRSABCD: the first aid action plan explained
• The recovery position, step by step
• Choking first aid for adults, children and babies
• Calling an ambulance in Australia