A stroke is a medical emergency, whether it happens at home, on a trail, or miles from the nearest road. Field first aid cannot reverse a stroke. Your priorities are to recognize the warning signs, activate emergency help immediately, support the person safely, and get them to appropriate medical care without unnecessary delay.
This article is educational. It does not replace hands-on training, professional medical care, or local emergency protocols. If a stroke is suspected, call 911 in the United States or activate your remote emergency communication plan immediately.
Recognize a possible stroke with BE FAST
Stroke symptoms usually start suddenly. Use BE FAST to remember important warning signs:
- Balance: Sudden loss of balance, coordination, or ability to walk normally.
- Eyes: Sudden vision loss, blurred vision, or double vision.
- Face: One side of the face droops or feels numb. Ask the person to smile.
- Arms: One arm is weak or numb. Ask them to raise both arms and watch for one drifting downward.
- Speech: Speech is slurred, unusual, or difficult to understand, or the person has trouble understanding you.
- Time: Any of these signs means it is time to call for emergency help.
A sudden severe headache, especially with no known cause, can also be a warning sign. Not every stroke causes every symptom. Do not wait for the full checklist before acting.
1. Call for help and record the time
Tell the dispatcher you suspect a stroke. Give your exact location, access information, symptoms, and the person's condition. Record when symptoms began and when the person was last known to be well. If they woke up with symptoms, the last-known-well time may be before they went to sleep. Do not guess: tell responders what you know and what is uncertain.
If cell service is unavailable, use a satellite communicator, emergency beacon, or your established communication plan. Do not wait to see whether symptoms go away. Symptoms that resolve still require urgent evaluation.
2. Keep the person safe and monitor breathing
Stop activity and help the person rest in a safe, comfortable position. Do not have them walk out or drive themselves. Keep them protected from weather, stay with them, and watch for changes in responsiveness and breathing.
If the person is unresponsive but breathing normally, maintain an open airway. If there is no suspected traumatic injury, a side-lying recovery position can help protect the airway, especially if they are vomiting. If trauma is suspected, follow your training and dispatcher guidance while prioritizing the airway.
If they become unresponsive and are not breathing normally, including only gasping, start CPR and use an AED as soon as one is available. Follow dispatcher instructions and the AED prompts.
3. Avoid actions that can cause harm
Do not give food, drink, or oral medication: a stroke can impair swallowing even when the person appears alert. Do not give aspirin for a suspected stroke unless an emergency clinician specifically directs it. Some strokes involve bleeding, and aspirin can worsen that bleeding. Do not attempt to lower blood pressure or improvise treatment in the field.
Low blood sugar and other conditions can resemble a stroke. If you are trained and equipped to check blood glucose under an established protocol, share the result with responders, but do not delay the emergency call or evacuation. Do not assume an alternative explanation rules out a stroke.
4. Coordinate evacuation and give a clear handoff
Follow emergency services' instructions about transport and destination. In remote terrain, arrange a safe evacuation with rescuers rather than forcing an impaired person to hike. Record symptom changes, last-known-well time, medications if known, especially blood thinners, and any care provided. Hand this information to the responding team.
Hospital evaluation is needed to distinguish different types of stroke and determine appropriate treatment. Do not assume that care is no longer useful because several hours have passed. Activate help promptly regardless of how long symptoms have been present.
Practice the response before an emergency
A calm, organized responder can make an important difference by recognizing a possible stroke and getting help moving quickly. S&S Training Solutions' CPR/AED and wilderness medicine training can help you practice assessment, communication, and evacuation planning before you need those skills in the field.
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