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First Aid A–Z

In an emergency, call 911 first (or your local emergency number). If someone is unresponsive and not breathing normally, start CPR and send for an AED. Do not delay a call to read a guide.

What would you do in the first five minutes? The MedicalVideos First Aid guide covers 76 emergencies and injuries — CPR and choking for every age, bleeding, burns, fractures, heart attack, stroke, anaphylaxis, poisoning and more — each with clear numbered steps, the common mistakes to avoid, and the warning signs that mean call 911 now. Every guide is printable as a clean one-topic sheet for a first-aid kit, workplace wall or classroom. First aid is a skill: consider a certified course so your hands know what your eyes have read.

Breathing & Circulation Emergencies

The minutes that matter most: CPR for adults, children and babies, using an AED, choking at every age, drowning, and the recovery position — the skills that keep oxygen moving until the ambulance arrives.

CPR for Adults first aidCPR for AdultsCPR for Babies (Under 1 Year) first aidCPR for Babies (Under 1 Year)CPR for Children first aidCPR for ChildrenChoking in Adults first aidChoking in AdultsChoking in Babies (Under 1 Year) first aidChoking in Babies (Under 1 Year)Choking in Children (Over 1 Year) first aidChoking in Children (Over 1 Year)

See all 10 in Breathing & Circulation Emergencies →

Bleeding & Wounds

From severe bleeding and amputations to nosebleeds, grazes and splinters: how to control bleeding, protect wounds, and recognise the hidden signs of internal bleeding and infection.

Amputated Finger, Toe or Limb — First Aid first aidAmputated Finger, Toe or Limb — First AidBleeding Varicose Vein — First Aid first aidBleeding Varicose Vein — First AidBlisters — First Aid and Care first aidBlisters — First Aid and CareCuts, Grazes and Scrapes — First Aid first aidCuts, Grazes and Scrapes — First AidInternal Bleeding — Recognising the Signs first aidInternal Bleeding — Recognising the SignsNosebleed — First Aid first aidNosebleed — First Aid

See all 11 in Bleeding & Wounds →

Burns & Scalds

Cool running water first — the first aid for heat burns, scalds, sunburn, chemical and electrical burns, and smoke inhalation, plus the size and depth rules that decide when a burn needs hospital care.

Burns — First Aid (Heat and Flames) first aidBurns — First Aid (Heat and Flames)Chemical Burns — First Aid first aidChemical Burns — First AidElectrical Burns — First Aid first aidElectrical Burns — First AidScalds (Hot Liquids and Steam) — First Aid first aidScalds (Hot Liquids and Steam) — First AidSmoke Inhalation — First Aid first aidSmoke Inhalation — First AidSunburn — First Aid and Care first aidSunburn — First Aid and Care

Bones, Joints & Muscles

Fractures, sprains, dislocations and crush injuries: how to support and splint an injured limb, protect circulation, and spot the injuries that need an ambulance rather than a car ride.

Broken Bones (Fractures) — First Aid first aidBroken Bones (Fractures) — First AidCrush Injuries — First Aid first aidCrush Injuries — First AidDislocated Joints — First Aid first aidDislocated Joints — First AidHow to Apply a Splint first aidHow to Apply a SplintMuscle Cramps — First Aid first aidMuscle Cramps — First AidRib Injuries (Bruised or Broken Ribs) — First Aid first aidRib Injuries (Bruised or Broken Ribs) — First Aid

See all 7 in Bones, Joints & Muscles →

Head, Neck & Spine

Head injuries and concussion warning signs, spinal precautions, eye injuries and chemical splashes, knocked-out teeth and objects stuck in ears and noses — where careful handling protects sight, brain and spine.

Broken Nose and Nose Injuries — First Aid first aidBroken Nose and Nose Injuries — First AidBroken or Chipped Tooth — First Aid first aidBroken or Chipped Tooth — First AidChemicals in the Eye — First Aid first aidChemicals in the Eye — First AidEye Injuries — First Aid first aidEye Injuries — First AidHead Injury and Concussion — First Aid first aidHead Injury and Concussion — First AidKnocked-Out Tooth — First Aid first aidKnocked-Out Tooth — First Aid

See all 8 in Head, Neck & Spine →

Medical Emergencies

Heart attack, stroke (FAST), seizures, fainting, low blood sugar, anaphylaxis, asthma attacks, shock, poisoning and the meningitis warning signs — recognising the emergency and doing the right things first.

Allergic Reactions — First Aid first aidAllergic Reactions — First AidAnaphylaxis — First Aid first aidAnaphylaxis — First AidAsthma Attack — First Aid first aidAsthma Attack — First AidCroup in Children — First Aid first aidCroup in Children — First AidFainting — First Aid first aidFainting — First AidFebrile Seizures in Children — First Aid first aidFebrile Seizures in Children — First Aid

See all 15 in Medical Emergencies →

Bites, Stings & Poisoning

Animal and snake bites, stings, ticks, jellyfish, carbon monoxide, swallowed chemicals, medicines and objects, food poisoning and alcohol poisoning — including when poison control is the first call.

Alcohol Poisoning — First Aid first aidAlcohol Poisoning — First AidAnimal and Human Bites — First Aid first aidAnimal and Human Bites — First AidBee and Wasp Stings — First Aid first aidBee and Wasp Stings — First AidCarbon Monoxide Poisoning — First Aid first aidCarbon Monoxide Poisoning — First AidFood Poisoning — First Aid and Care first aidFood Poisoning — First Aid and CareJellyfish Stings — First Aid first aidJellyfish Stings — First Aid

See all 11 in Bites, Stings & Poisoning →

Heat, Cold & Environment

Heat exhaustion and heatstroke, hypothermia, frostbite, cold water shock, altitude sickness, dehydration and lightning: how weather and environment injure, and the first aid that reverses it.

Altitude Sickness — First Aid first aidAltitude Sickness — First AidCold Water Shock and Immersion — First Aid first aidCold Water Shock and Immersion — First AidDehydration — First Aid and Care first aidDehydration — First Aid and CareFrostbite — First Aid first aidFrostbite — First AidHeat Exhaustion — First Aid first aidHeat Exhaustion — First AidHeatstroke — Emergency First Aid first aidHeatstroke — Emergency First Aid

See all 8 in Heat, Cold & Environment →

Frequently asked questions

What should I do first in any emergency?

Keep yourself safe, check for a response and normal breathing, and call 911 (or your local emergency number) — or send someone else to call while you start first aid. For an unresponsive person who is not breathing normally, start CPR and send for an AED.

Can first aid really make a difference?

Yes. Early CPR and defibrillation are the strongest factors in surviving a cardiac arrest, direct pressure controls bleeding that would otherwise be fatal, and 20 minutes of cool running water measurably reduces burn depth. The first minutes belong to whoever is standing there.

Are these guides a substitute for a first-aid course?

No. They are a reference and a refresher, reviewed by Dr. Mohamed Ibrahim, Assistant Professor of Medicine (Transplant Nephrology) at the University of Maryland School of Medicine. Hands-on certified training (for example from the Red Cross) is the best way to be ready.

In an emergency, call 911 (or your local emergency number) first — do not delay a call to read a guide. These pages are educational first-aid information in general terms; they are not a substitute for emergency services, first-aid training, or assessment by a qualified clinician.