First Aid, CPR, and AED for Construction Sites

Why First Aid Skills Matter on Construction Sites

Construction sites consistently rank among the most hazardous workplaces in the United States. Workers face risks from falls, heavy equipment, electrical systems, chemicals, and extreme heat every day. When a serious medical emergency occurs, professional emergency medical services (EMS) may be several minutes away. The actions taken in those first minutes—often by coworkers—determine whether a person survives or suffers permanent harm. This lesson prepares you to act confidently and correctly until EMS arrives.

Cardiac Arrest and the Chain of Survival

Sudden cardiac arrest can happen to anyone, including healthy young workers. The American Heart Association (AHA) describes a Chain of Survival: recognize the emergency and call 911, begin high-quality CPR immediately, use an AED as soon as one is available, transfer care to advanced EMS, and support recovery afterward. Every link matters. CPR alone keeps blood moving to the brain; an AED delivers a controlled electrical shock that can restore a normal heart rhythm. Brain damage begins within minutes of no blood flow, so delay is the enemy.

Adult CPR steps (Heartsaver standard):

1. Verify the scene is safe before approaching.

2. Tap the person's shoulders firmly and shout, "Are you okay?"

3. If unresponsive and not breathing normally, call 911 (or direct someone specific to call) and send another person for the AED.

4. Position hands: heel of one hand on the center of the chest (lower half of the sternum), other hand on top, fingers interlaced.

5. Compress at least 2 inches deep at a rate of 100–120 compressions per minute. Allow full chest recoil after each compression.

6. After 30 compressions, give 2 rescue breaths (1 second each, watch for chest rise) if trained and willing. Hands-only CPR is acceptable if you prefer.

7. Continue 30:2 cycles until the AED is ready or EMS takes over.

AED operation:

• Power on the device and follow its voice and visual prompts.
• Attach pads to bare, dry skin: one pad below the right collarbone, one on the left side below the armpit.
• Ensure no one is touching the patient when the AED analyzes and when it delivers a shock ("Clear!").
• Resume CPR immediately after the shock and continue until EMS arrives.

Bleeding Control

Severe bleeding is a leading cause of preventable death from traumatic injury. Apply direct pressure with a clean dressing and maintain it—do not lift the dressing to check. For life-threatening limb bleeding that does not respond to direct pressure, a tourniquet is appropriate. Apply it 2–3 inches above the wound (never over a joint), tighten until bleeding stops, note the time of application, and never remove it in the field. Mark the time on the patient's skin or tape with a marker. Notify EMS of tourniquet use and time.

Musculoskeletal Injuries

Sprains, strains, and suspected fractures are common on construction sites. Do not attempt to straighten a deformed limb. Immobilize the injured area in the position found, apply ice wrapped in cloth to limit swelling, elevate if possible, and arrange transport. Suspected spinal injury after a fall, blow to the head, or scaffold incident requires special care: do not move the patient unless there is immediate life-threatening danger (fire, collapse). Keep the head and neck still, call 911, and maintain manual stabilization until EMS assumes control. Moving a spine-injured patient incorrectly can cause permanent paralysis.

Heat Illness

Construction workers are at high risk for heat illness during hot-weather pours, roofing, and outdoor grading. Know the progression:

• Heat cramps: Painful muscle spasms; move the worker to shade, give cool water or sports drink, rest.
• Heat exhaustion: Heavy sweating, weakness, cool/pale/moist skin, nausea; move to a cool area, loosen clothing, apply cool wet cloths, give fluids if conscious and able to swallow, monitor closely.
• Heat stroke: High body temperature (often above 104 °F), hot/dry or minimally sweating skin, confusion or loss of consciousness—this is a life-threatening emergency. Call 911 immediately. Cool the worker aggressively by any means available (ice packs to neck, armpits, and groin; cool water immersion if possible) while waiting for EMS. Do not give fluids to an unconscious person.

Chemical Splash to the Eyes

Concrete, solvents, and other construction chemicals can cause rapid, severe eye damage. The immediate response is the most important factor in limiting injury:

1. Call for help and activate the emergency eyewash station immediately.

2. Flush the affected eye continuously with clean, tepid water for a minimum of 15 minutes (per ANSI Z358.1 eyewash standard). Hold eyelids open during flushing.

3. Remove contact lenses if the worker can do so quickly and easily.

4. Do not rub the eye.

5. Call 911 or arrange immediate transport to an emergency facility; bring the product Safety Data Sheet (SDS) so medical staff know the chemical involved.

Your Responsibility as a Future Construction Manager

As a construction manager or estimator, you will be responsible for crews. Knowing where first-aid kits, AEDs, and eyewash stations are located before work begins is part of your planning duty. OSHA requires that first-aid supplies be readily available at construction sites and that at least one person trained in first aid be present when a medical facility is not in near proximity. Keeping your Heartsaver certification current protects both your workers and your project.