An ambulance is on its way, but it is not here yet. Everything that happens in the gap between the incident and the crew arriving is done by whoever is already in the room, and that is almost always a colleague, not a clinician.
In our experience running on-site medical cover across worksites, offices and events in Singapore, the difference between a good outcome and a poor one is rarely equipment. It is whether someone nearby knew what to do immediately, and felt confident enough to start.
Why the first five minutes matter so much
In a cardiac arrest, the chance of survival falls with every minute that passes without chest compressions and defibrillation. A serious bleed can become life-threatening in a similar window. Neither of those clocks waits for professional help to arrive, which is why a trained responder on site is not a nice-to-have. They are the first link in the chain.
What a trained responder actually does
Good first-aid training is less about memorising procedures and more about having a clear order of operations under pressure. In practice, the first responder on scene should work through four things:
- Make the scene safe. A second casualty helps nobody. Check for traffic, machinery, live electricity, chemicals or falling objects before approaching.
- Check responsiveness and breathing. If the casualty is unresponsive and not breathing normally, start CPR and send someone for the nearest AED immediately.
- Delegate clearly. Point at one person and give them one job: call 995, fetch the AED, meet the ambulance at the gate. Instructions given to a crowd get ignored.
- Control what you can. Direct pressure on a bleed, comfort and reassurance for a conscious casualty, and keep them still if a spinal injury is possible.
The preparation that makes those minutes possible
Know where your AED is, before you need it
Every second spent searching for a defibrillator is a second without one. Everyone on site should be able to point to the nearest unit without thinking, and the route to it should be unobstructed at all times.
Keep the kit stocked and in date
Most workplace first-aid kits we inspect are missing at least one item that matters, and many contain dressings well past their expiry. A quarterly check takes minutes and removes an avoidable failure point.
Refresh certifications on schedule
Most first-aid and CPR/AED certifications are valid for two to three years. Skills fade faster than certificates expire, so a short refresher is worth booking before the deadline rather than after it.
Where to start
If your organisation has no trained responders, start with a Standard First Aid or CPR + AED course for a small group and build from there. If you already have certified staff, the useful next question is whether they have practised recently, and whether your high-risk areas warrant on-site paramedic cover rather than first-aiders alone.
