You can tell by listening to their heart, or check if they are breathing
Have someone call 911, provide a physical address. Check the area for hazards. Don't need additional victims. Check the victim-you have 3 minutes before brain damage if he is not breathing. Administer CPR until help arrives.
First, you would need to call the ambulance, and while the ambulance is coming, you would check her breathing, and etcetera.
Check the Situation Check the Habit Check the Accident
Fast blinking indicators usually indicates a bad relay. Check fuses and relays, and clean contacts if possible.
Check the fuse box(es) for a burnt fuse. Also, check to see if the front indicators work - if not, the flasher unit probably needs to be replaced.
Check for adequate breathing for 10 seconds; the chest should clearly rise for breathing to be effective.
check that it is your car and check all the things such as tires indicators lights and did i mention to check that it is your car
Check your fuses.
Check for responsiveness by gently shaking and calling out to the person. If they do not respond, call emergency services immediately and check for breathing and a pulse. Then, carefully place the person in the recovery position while waiting for help to arrive.
Check for breathing as soon as the scene is safe, the patient is unconscious, and 911 (or the local emergency number) has been called.
Check for a pulse and breathing. No pulse, no breathing, give CPR.