ACLS Basics 5

Question 1

What is the correct hand placement for chest compressions in an adult during CPR?

Accepted Answer

Lower half of the sternum

Answer

Compressions should be delivered on the lower half of the sternum to effectively compress the heart.

Question 2

During ACLS, what is the significance of a 'no-flow time' ratio?

Accepted Answer

It is the fraction of time without chest compressions during resuscitation

Answer

No-flow time refers to pauses in chest compressions; minimizing this ratio is critical to maintaining coronary perfusion pressure.

Question 3

Which of the following scenarios represents the appropriate use of a bag-mask device (BVM) during ACLS?

Accepted Answer

Two rescuers — one holds the mask with two hands, one squeezes the bag

Answer

A two-rescuer BVM technique, with one maintaining a two-hand mask seal and the other squeezing the bag, provides better ventilation.

Question 4

In ACLS, vasopressin was previously listed as an alternative to epinephrine. What does current guidance recommend?

Accepted Answer

Vasopressin has been removed; epinephrine is the sole vasopressor

Answer

Current AHA ACLS guidelines have removed vasopressin from the algorithm; epinephrine 1 mg IV/IO every 3–5 minutes is the standard vasopressor.

Question 5

What is the recommended target SpO2 range during post-cardiac arrest care after ROSC?

Accepted Answer

94–99%

Answer

After ROSC, SpO2 should be maintained at 94–99% to avoid both hypoxia and hyperoxia, which can worsen neurological outcomes.

ACLS Practice Test