What to Do If Someone Becomes Unconscious: First Aid Guide

What to Do If Someone Becomes Unconscious

Finding someone who has suddenly collapsed or become unresponsive is a high-stress medical crisis. Unconsciousness occurs when the brain temporarily or permanently experiences a disruption in oxygenation, blood circulation, or neurological function. Knowing how to assess responsiveness, clear airways, summon emergency care, and perform basic life support measures can prevent permanent brain damage or save a life.

Assess Responsiveness and Call 911 Immediately

Determining whether the person is sleeping, faint, or in severe life-threatening distress dictates your immediate response.

• Check for responsiveness safely: Shake the person's shoulders firmly and shout loudly, "Are you okay? Can you hear me?"

• Call 911 immediately if unresponsive: If the person does not speak, move, blink, or respond to touch, call emergency services (or direct a specific bystander to call 911 and locate an Automated External Defibrillator).

• Observe breathing for 10 seconds: Put your ear close to their nose and mouth while watching their chest. Check whether their chest rises normally or if they are gasping or not breathing at all.

What to Do If the Unconscious Person Is Breathing Normally

If the person is completely unresponsive but continues to show normal, steady breathing movements, protect their airway while waiting for help.

• Place them in the Recovery Position: Gently roll the person onto their side. Bend their top knee at a right angle to stabilize their body, and tilt their head back slightly with their cheek resting on their lower hand.

• Why the recovery position matters: Positioning the person on their side uses gravity to keep the tongue from blocking the throat and prevents accidental choking if the person vomits.

• Monitor breathing continuously: Remain beside the person and check their breathing every minute until emergency medical personnel arrive.

What to Do If the Person Is Not Breathing (Start CPR)

If the person is unresponsive and not breathing, or only making irregular, gasping sounds, their heart may have stopped.

• Position the person on their back: Carefully turn the person flat onto their back on a firm, flat floor.

• Begin continuous chest compressions: Place the heel of one hand in the center of the person's chest, interlock your other hand on top, and push down hard and fast (100 to 120 compressions per minute) to the beat of a fast rhythm.

• Use an Automated External Defibrillator (AED) if available: Turn on the AED device as soon as it arrives and follow the spoken voice prompts to deliver a life-saving shock if recommended.

Critical Warnings and Actions to Avoid

Improper physical interventions during unconsciousness can cause severe airway blockages or spinal injuries.

• Do not leave the person unattended: Stay beside the victim continuously to monitor their breathing status.

• Do not slap, splash cold water, or shake violently: Physical trauma interventions do not reverse medical unconsciousness and can cause cervical spine damage.

• Do not place anything inside their mouth: Never attempt to pull the tongue or insert objects, liquids, or food into an unconscious person's mouth.

FAQ

What is the difference between fainting and becoming unconscious?

Fainting (syncope) is a temporary, brief loss of consciousness caused by a short drop in blood pressure, from which the person wakes up quickly within a minute. Prolonged unconsciousness lasts longer and indicates severe neurological, respiratory, or cardiac issues.

Should I move an unconscious person if I suspect a fall or neck injury?

Do not move them unless they are in immediate external danger (such as near a fire) or need to be turned onto their back to receive life-saving CPR. If CPR is not needed, keep their head, neck, and spine completely still until emergency responders arrive.