Understanding Compression Techniques

What is the primary benefit of performing compression-only CPR?

• It increases the chance of survival by maintaining blood flow to vital organs.

• It reduces the risk of rib fractures.

• It eliminates the need for mouth-to-mouth resuscitation.

• It is easier to perform than traditional CPR.

Answer explanation

The primary benefit of performing compression-only CPR is that it increases the chance of survival by maintaining blood flow to vital organs, which is crucial during a cardiac arrest.

Which of the following is a basic step in performing compression-only CPR?

• Checking for a pulse before starting compressions.

• Performing chest compressions at a rate of 100 to 120 per minute.

• Giving two rescue breaths after every 30 compressions.

• Using an AED before starting compressions.

Answer explanation

The correct step in compression-only CPR is performing chest compressions at a rate of 100 to 120 per minute. Checking for a pulse, giving rescue breaths, and using an AED are not part of this method.

What is the recommended depth for chest compressions in adults during compression-only CPR?

• 1 inch

• 1.5 inches

• 2 inches

• 2.5 inches

Answer explanation

The recommended depth for chest compressions in adults during compression-only CPR is 2 inches. This depth ensures effective blood circulation during cardiac arrest.

Which of the following statements is true about the benefits of compression-only CPR?

• It is less effective than traditional CPR in all cases.

• It can be performed by bystanders without formal training.

• It requires specialized equipment to be effective.

• It is only recommended for children under 12 years old.

Answer explanation

Compression-only CPR can be performed by bystanders without formal training, making it accessible and effective in emergencies. The other statements are incorrect as they misrepresent the nature and applicability of this technique.

What is the main goal of chest compressions in CPR?

• To restart the heart.

• To clear the airway.

• To maintain blood circulation.

• To provide oxygen to the lungs.

Answer explanation

The main goal of chest compressions in CPR is to maintain blood circulation. This helps deliver oxygen to vital organs until normal heart function is restored, rather than restarting the heart directly.

Which of the following is NOT a benefit of compression-only CPR?

• It simplifies the CPR process for untrained bystanders.

• It reduces the time taken to initiate CPR.

• It ensures oxygen is delivered to the lungs.

• It increases the likelihood of bystander intervention.

Answer explanation

The correct choice is 'It ensures oxygen is delivered to the lungs.' Compression-only CPR focuses on chest compressions, which do not provide oxygen, making this statement inaccurate.

What is the correct hand placement for performing chest compressions in CPR?

• On the lower half of the sternum.

• On the upper half of the sternum.

• Directly over the heart.

• On the left side of the chest.

Answer explanation

The correct hand placement for chest compressions in CPR is on the lower half of the sternum. This position allows for effective compressions to circulate blood during cardiac arrest.

How does compression-only CPR benefit the victim compared to no intervention?

• It provides full oxygenation to the brain.

• It maintains partial blood flow to the brain and heart.

• It completely restarts the heart.

• It prevents any further injury.

Answer explanation

Compression-only CPR helps maintain partial blood flow to the brain and heart, which is crucial for survival, compared to no intervention where blood flow ceases, leading to brain damage and death.

What is the recommended position of the rescuer's arms during chest compressions?

• Bent at the elbows.

• Straight and locked at the elbows.

• Crossed over the chest.

• Bent at the wrists.

Answer explanation

The correct position for the rescuer's arms during chest compressions is straight and locked at the elbows. This ensures maximum force is applied to the chest, allowing for effective compressions and better blood circulation.

Which of the following is a key component of effective chest compressions?

• Compressing at a rate of 50 per minute.

• Allowing full chest recoil between compressions.

• Performing compressions with one hand.

• Compressing only the upper chest.

Answer explanation

Allowing full chest recoil between compressions is crucial for effective chest compressions, as it helps maintain blood flow and allows the heart to refill with blood. Other options do not support effective CPR.