ACLS Practice Test: Video 2 Answers (24 Questions)

Question 1

During ACLS training, which rhythm requires immediate defibrillation as the first intervention?

Accepted Answer

Ventricular fibrillation

Answer

Ventricular fibrillation is a shockable rhythm that requires immediate defibrillation to restore organized electrical activity.

Question 2

Adult chest compressions are performed as follows:

Accepted Answer

Approximately 100–120 compressions per minute

Answer

For adult chest compressions, ACLS guidelines recommend a rate of approximately 100–120 compressions per minute. This rate, combined with adequate depth (at least 2 inches or 5 cm) and full chest recoil, is crucial for optimizing blood flow to the brain and heart during cardiac arrest. Maintaining this rate helps ensure continuous and effective perfusion.

Question 3

A bag valve mask is used to ventilate an adult patient who is in respiratory arrest and has a pulse:

Accepted Answer

10 to 12 times per minute

Answer

For an adult patient in respiratory arrest who still has a pulse, the recommended ventilation rate using a bag-valve-mask is one breath every 5 to 6 seconds, which equates to 10 to 12 breaths per minute. This rate provides adequate oxygenation and ventilation without causing hyperventilation, which can negatively impact cardiac output and cerebral blood flow.

Question 4

When providing basic life support to an adult, the proper procedure is:

Accepted Answer

CAB - Compressions, Airway, Breathing

Answer

The proper sequence for adult basic life support (BLS) is C-A-B: Chest Compressions, Airway, then Breathing. This sequence prioritizes immediate chest compressions to maintain vital organ perfusion, as delays in compressions significantly reduce survival rates. Establishing an airway and providing breaths follow after initiating compressions.

Question 5

During ACLS megacode practice, when should chest compressions be paused?

Accepted Answer

Only to deliver a shock or check pulse after rhythm change

Answer

Compressions should be paused only to deliver a defibrillation shock or to check for a pulse after a rhythm change suggesting ROSC.