ACLS BLS and High-Quality CPR 5

Question 1

Which of the following BEST describes the purpose of the 'C-A-B' sequence in CPR?

Accepted Answer

Prioritizing chest compressions over airway and breathing to restore circulation faster

Answer

Checking responsiveness before calling for help

Answer

Confirming airway patency before initiating compressions

Answer

Assessing breathing before pulse check to save time

Question 2

An ETCO2 monitor is attached to a patient receiving CPR. The reading is 42 mmHg. What does this most likely indicate?

Accepted Answer

Return of spontaneous circulation

Answer

Hyperventilation by the rescuer

Answer

Excellent but not yet sufficient CPR

Answer

Equipment malfunction

Question 3

What is the recommended depth of chest compressions for an infant during CPR?

Accepted Answer

At least 1.5 inches or approximately 1/3 the depth of the chest

Answer

At least 2 inches

Answer

At least 1 inch

Answer

At least 2.5 inches

Question 4

During a cardiac arrest resuscitation, when should the team consider stopping CPR efforts?

Accepted Answer

Based on clinical judgment, ETCO2 trends, and reversible causes being addressed

Answer

After 10 minutes without ROSC

Answer

After 20 minutes without ROSC in any circumstance

Answer

Only when a physician verbally calls the code

Question 5

A single rescuer is performing CPR on an adult with no advanced airway. After how many compressions should rescue breaths be given?

Accepted Answer

30 compressions

Answer

15 compressions

Answer

25 compressions

Answer

20 compressions

Question 6

During CPR, a rescuer is using a bag-mask device alone. Which technique best maintains an adequate mask seal?

Accepted Answer

Two-hand mask hold with a second rescuer compressing the bag

Answer

E-C clamp technique with one hand

Answer

Placing the mask over the mouth only

Answer

Tilting the head back without jaw thrust

Question 7

Which of the following best explains why excessive ventilation during CPR is harmful?

Accepted Answer

It increases intrathoracic pressure, reducing venous return and cardiac output

Answer

It wastes time that could be used for compressions

Answer

It causes CO2 retention and acidosis

Answer

It causes overinflation of the lungs leading to pneumothorax