BLS BLS High-Quality CPR & Provider Skills 2

Question 1

When delivering breaths with a bag-mask device during CPR, what tidal volume is recommended?

Accepted Answer

Enough volume to produce visible chest rise

Answer

Deliver just enough tidal volume to produce visible chest rise; over-ventilation causes gastric inflation and reduces cardiac output.

Question 2

The E-C clamp technique for bag-mask ventilation refers to:

Accepted Answer

Using the thumb and index finger (C-shape) to seal the mask and the remaining fingers (E-shape) to lift the jaw

Answer

The C-shape seals the mask to the face while the E-shape lifts the mandible, ensuring a patent airway and an effective mask seal simultaneously.

Question 3

For 2-rescuer BLS in a child (not a newborn or adult), what is the correct compression-to-ventilation ratio?

Accepted Answer

15:2 — allowing more frequent breaths for the pediatric patient

Answer

The 2-rescuer pediatric ratio is 15:2, providing more ventilations to address the greater role of hypoxia in pediatric cardiac arrests.

Question 4

How do you confirm that bag-mask ventilation is effective during CPR?

Accepted Answer

By observing visible chest rise with each delivered breath

Answer

Visible chest rise is the most reliable real-time indicator that ventilations are entering the lungs and not the stomach.

Question 5

Why is over-ventilation harmful during CPR?

Accepted Answer

It raises intrathoracic pressure, reducing venous return and cardiac output during CPR

Answer

Excessive positive pressure in the chest opposes venous return, impairing heart refilling and reducing blood flow with each compression.

BLS - Basic Life Support Practice Test