The First Three Steps When Alone with a Person in Cardiac or Respiratory Arrest
When you encounter someone alone in apparent cardiac or respiratory arrest, the first three steps are: (1) Check for danger (ensure scene safety), (2) Check for response (tap and shout at the victim), and (3) Activate the emergency response system (call 9-1-1). 1
The Critical Sequence
The 2020 American Heart Association Guidelines provide explicit guidance for this exact scenario. Here's what you must do:
Step 1: Ensure Scene Safety
Before approaching the victim, verify that the scene is safe for you to enter. This protects you from becoming a second victim and is universally the first step for all rescuer types 1.
Step 2: Check for Response
Tap the victim on the shoulder and shout at them to assess responsiveness. Look for any movement or response to stimulation 2. This takes only seconds but is critical for confirming the need for resuscitation.
Step 3: Activate Emergency Response System
Immediately shout for nearby help and call 9-1-1 (or your local emergency number). 1 If you have a mobile phone, put it on speaker mode and keep it at the victim's side so you can follow dispatcher instructions while beginning CPR 1.
What Happens Next
After these three steps, you should:
- Check for breathing - Look for no breathing or only gasping (agonal breathing) 1, 2
- Begin CPR immediately if the person is unresponsive with absent or abnormal breathing 1, 2
- Start with chest compressions (not breaths) if you are alone 1
- Follow the dispatcher's instructions - they are trained to guide you through CPR 2
Critical Timing Considerations
In the current era of mobile devices, ideally both the call to activate EMS and the initiation of CPR can occur simultaneously 1. Research shows that rapid dispatch (within one minute) is associated with 2.6-fold higher 30-day survival rates 3. The dispatcher can guide you through CPR steps while help is on the way, which substantially increases the likelihood of bystander CPR performance and improves survival 2.
Common Pitfalls to Avoid
- Don't delay calling 9-1-1 to start CPR first - the call should happen immediately after confirming unresponsiveness 2
- Don't hang up until the dispatcher tells you to do so 2
- Don't waste time removing clothing before starting compressions 1
- Don't hesitate to start CPR even if you're uncertain - the risk-benefit ratio strongly favors providing CPR for presumed cardiac arrest, even if the person turns out not to be in arrest 1
The sequence is designed to minimize time to both EMS activation and chest compressions, as both are critical links in the Chain of Survival that determine whether the victim survives 2, 4.