CPR Certification Manual: Common Mistakes

CPR: Common MistakesCommon Mistakes

High-quality CPR depends on rapid recognition, effective chest compressions, appropriate breaths, early AED use, and minimizing interruptions. Knowing common mistakes can help rescuers avoid them.

Delaying CPR

Do not spend excessive time checking responsiveness, breathing, or a pulse. If a person is unresponsive and is not breathing normally or is only gasping, begin CPR promptly.

Incorrect Compression Rate

Chest compressions should be delivered at:

100-120 compressions per minute

Compressing substantially too slowly or too quickly can reduce CPR quality.

Incorrect Compression Depth

For adults:

  • At least 2 inches (5 cm)
  • Avoid excessive depth greater than approximately 2.4 inches (6 cm)

For children:

  • At least one-third the depth of the chest
  • Approximately 2 inches (5 cm)

For infants:

  • At least one-third the depth of the chest
  • Approximately 1.5 inches (4 cm)

Poor Chest Recoil

Allow the chest to return completely after each compression. Do not lean on the chest between compressions.

Bending the Elbows

During adult compressions, keep the elbows straight and position the shoulders directly over the hands. This allows the rescuer to use body weight effectively and helps maintain consistent depth.

Excessive Interruptions

Keep pauses in chest compressions as short as possible.

Do not stop CPR unnecessarily to:

  • Repeatedly check for a pulse
  • Reassess breathing
  • Reposition equipment
  • Discuss what to do next

Excessive Rescue Breaths

Give each breath over approximately 1 second and only until the chest visibly rises. Avoid forceful or excessive ventilation.

Incorrect AED Use

Common AED mistakes include:

  • Delaying use of the AED
  • Placing pads incorrectly
  • Allowing pads to touch each other
  • Touching the person during rhythm analysis
  • Failing to clear everyone before a shock
  • Pausing after a shock instead of immediately resuming CPR

Using Outdated Infant Compression Technique

Do not use the older two-finger chest-compression technique. Current infant CPR guidelines use the heel of one hand or a two-thumb, encircling-hands technique.

Remember

Good CPR is built around a few priorities:

Recognize quickly → Call for help → Compress effectively → Give appropriate breaths → Use the AED early → Minimize interruptions