First aid is the immediate care given for any injury or sudden illness. CPR is one specific technique used within first aid when someone’s heart has stopped. First aid covers bleeding, burns, fractures, choking, and medical emergencies. CPR covers cardiac arrest specifically. Most certification courses teach both together, along with AED use, and are valid for two years.
First aid is the initial care given to an injured or suddenly ill person before professional medical help arrives, or in cases where professional help is not needed. Its three stated aims are to preserve life, prevent the condition from worsening, and promote recovery.
The scope is wide. It includes bleeding control, burn care, fracture immobilization, choking relief, allergic reaction response, seizure management, heat and cold emergencies, poisoning, and recognition of heart attack and stroke.
First aid is deliberately conservative. Most of it is about stabilizing and not making things worse, rather than treating.
Cardiopulmonary resuscitation is a technique used when someone’s heart has stopped pumping blood effectively. It combines chest compressions, which manually circulate blood, with rescue breaths, which supply oxygen.
Compressions do not restart a stopped heart. They generate roughly 20–30% of normal cardiac output, which is enough to keep brain and heart tissue marginally viable until a defibrillator can deliver a shock or advanced care arrives. Brain injury begins within about four to six minutes without circulation.
Defibrillation is the definitive treatment for the shockable rhythms that cause most sudden adult cardiac arrests. CPR is what buys the time to get there.
First Aid | CPR | |
Scope | All injuries and sudden illnesses | Cardiac and respiratory arrest only |
When used | Person is conscious or unconscious, breathing | Person is unresponsive and not breathing normally |
Core actions | Bleeding control, burn care, splinting, choking relief, allergy and seizure response | Chest compressions, rescue breaths, AED use |
Goal | Stabilize, prevent worsening, promote recovery | Circulate blood and oxygen until defibrillation or advanced care |
Equipment | Bandages, gauze, gloves, splints, epinephrine auto-injector | Barrier device or bag-mask, AED |
Training time | 2–3 hours | 2–3 hours, or combined with first aid in a longer course |
Relationship | The broad category | One technique within that category |
The clearest way to hold the distinction: first aid asks what is wrong with this person and what do they need, while CPR is the specific answer when what’s wrong is that their heart has stopped.
Every emergency response follows the same three steps, taught by the American Red Cross as the three C’s.
Hands-only CPR is recommended for untrained or uncertain bystanders responding to a teen or adult who collapses suddenly. The reason it works in that scenario: the blood in a person who just collapsed still carries usable oxygen for several minutes, so compressions alone can circulate it.
When hands-only is not appropriate: infants and children, drowning, drug overdose, and any arrest caused by a breathing problem. In those cases oxygen is already depleted, so rescue breaths matter. Use conventional CPR if you’re trained.
For trained rescuers, the adult cycle is 30 compressions to 2 breaths.
For children and infants with two rescuers, the ratio changes to 15:2. Infant compressions use two fingers or the two-thumb encircling technique, to about one-third the depth of the chest.
An automated external defibrillator analyzes heart rhythm and delivers a shock if one is indicated. It will not shock a heart that doesn’t need it, which is why untrained use is safe.
Special cases: use pediatric pads for children under 8 or under 55 pounds if available; adult pads are acceptable if not. Move the person off standing water. Place pads at least an inch away from an implanted pacemaker bump. Remove medication patches before placing a pad over them.
Severe bleeding. Apply firm, direct pressure with a clean cloth or gauze. If blood soaks through, add layers on top — never remove the original dressing, which would strip the forming clot. For life-threatening limb bleeding that direct pressure cannot control, a tourniquet applied 2–3 inches above the wound is appropriate. Note the time it was applied.
Choking. If the person is coughing forcefully, encourage them to keep coughing. A forceful cough moves more air than any thrust. Intervene when they cannot speak, cough, or breathe: abdominal thrusts for adults and children, back slaps and chest thrusts for infants, chest thrusts for people who are pregnant or too large to encircle. If they become unresponsive, lower them to the ground and begin CPR, checking the mouth for the object before each set of breaths.
Burns. Cool the burn under cool running water for up to 20 minutes. Not ice, which causes further tissue injury, and nothing greasy. Remove jewelry and loose clothing near the area before swelling begins. Cover loosely with a clean, non-stick dressing. Do not break blisters.
Suspected fracture. Immobilize the limb in the position found. Do not attempt to realign it. Apply ice over cloth, not directly on skin.
Heart attack. Chest pressure or pain, shortness of breath, nausea, cold sweat, pain in the jaw, back, or arms. Women more often present without classic chest pain. Call 911. Aspirin may be appropriate if the person is not allergic and has no bleeding disorder.
Stroke. Use FAST: Face drooping, Arm weakness, Speech difficulty, Time to call 911. Note the time symptoms started — treatment eligibility depends on it.
Anaphylaxis. Hives, swelling of face or throat, difficulty breathing. Use an epinephrine auto-injector into the outer thigh and call 911 immediately, even if symptoms improve. Symptoms can return.
Seizure. Do not restrain the person and do not put anything in their mouth. Clear hard objects away, cushion the head, time the seizure. Call 911 if it lasts over five minutes, repeats, or occurs in someone pregnant or unknown to you. Place them in the recovery position afterward.
Opioid overdose. Unresponsive with slow or absent breathing and pinpoint pupils. Give naloxone if available, call 911, and begin rescue breathing or CPR as needed.
Most providers teach first aid, CPR, and AED as a single combined course. Certification through the American Heart Association or the American Red Cross is valid for two years.
Course | Audience | Length | Valid |
Heartsaver First Aid CPR AED | Workplace responders, teachers, coaches, childcare staff, parents | 4–6 hours | 2 years |
Heartsaver CPR AED | Workplace, without the first aid component | 2–3 hours | 2 years |
BLS Provider | Healthcare professionals and clinical students | 3.5–4.5 hours | 2 years |
Which one you need depends on the requirement behind it. Workplace safety programs, childcare licensing, coaching, teaching, and construction requirements are generally met by the AHA Heartsaver First Aid CPR AED course, which is the standard non-clinical certification. Clinical employment, nursing programs, and dental licensure require BLS Provider instead, which adds bag-mask ventilation, pulse checks, and team resuscitation — a Heartsaver card will not clear a hospital credentialing office, and a BLS card is overkill for a workplace responder.
On format: blended learning is legitimate — coursework online, followed by an in-person hands-on skills evaluation. Online-only certification with an instant printable card is not. There’s no skills assessment behind it, and most employers reject it. One question sorts this out before you pay: does this include an in-person hands-on skills evaluation?
Requirements come from three directions, and they stack rather than replace each other.
Workplace safety. Federal OSHA rules require adequate first aid provision where medical facilities aren’t in near proximity. In practice, employers meet this by certifying designated responders. Some industry-specific standards name CPR training explicitly.
Professional licensure. Maryland’s health occupation boards set certification requirements by profession. The Maryland Board of Nursing, Board of Dental Examiners, and Board of Physicians each maintain their own current standards, and these change — verify with your board rather than relying on what a colleague told you.
Childcare and education. Maryland childcare licensing regulations require staff trained in first aid and CPR on site. School athletic and coaching roles typically carry their own requirements set by the county school system.
EMS and prehospital roles. The Maryland Institute for Emergency Medical Services Systems governs EMS certification statewide, with BLS as a prerequisite for advanced credentials.
Because these bodies update independently, confirm the requirement in writing with whoever is asking for the card before booking a course.
What is the difference between first aid and CPR?
First aid is the immediate care given for any injury or sudden illness. CPR is one technique used within first aid, specifically when someone’s heart has stopped. First aid is the category; CPR is a procedure inside it.
What are the 3 C’s of first aid?
Check, Call, Care. Check the scene and the person, call 911 and send for an AED, then provide care.
Should I do hands-only CPR or CPR with breaths?
Hands-only for untrained bystanders responding to an adult or teen who collapsed suddenly. Conventional CPR with breaths for infants and children, drowning, overdose, and any arrest caused by a breathing problem — if you’re trained.
How deep and how fast should compressions be?
At least 2 inches deep for adults, at 100 to 120 compressions per minute, allowing full chest recoil between each.
Can I hurt someone by doing CPR?
Rib fractures occur in a meaningful share of resuscitations. They heal. A person in cardiac arrest without CPR does not survive. Good Samaritan laws in every state provide legal protection for reasonable assistance given in good faith.
How long does certification last?
Two years, for both first aid and CPR credentials from the AHA and Red Cross.
Can I get certified entirely online?
No credential accepted by employers is issued without an in-person hands-on skills evaluation. Blended learning — online coursework plus an in-person skills check — is the legitimate flexible option.
Do I need first aid and CPR, or just CPR?
Depends on the requirement. Workplace and childcare rules usually specify both, which is what the combined Heartsaver course covers. Clinical employment typically specifies BLS instead.
What’s in a basic first aid kit?
Gloves, assorted bandages, sterile gauze, adhesive tape, antiseptic wipes, a CPR barrier mask, scissors, tweezers, an instant cold pack, and an emergency blanket. Add a tourniquet and hemostatic gauze for higher-risk settings.
How often should I refresh between certifications?
Skills measurably decay within three to six months. A short annual refresher, even self-directed with a practice manikin, meaningfully preserves compression quality.
Comfi-Kare CPR provides first aid, CPR, and AED training for individuals, workplaces, schools, and childcare staff. Course details and upcoming dates are on the AHA Heartsaver First Aid CPR AED page.