The depth range for adult chest compressions in CPR is between which values?

The depth range for adult chest compressions in CPR is between which values?

• A. 0.5 To 1 Inch
• B. 1-1/2 To 2 Inches
• C. 2 To 3 Inches
• D. 3 To 4 Inches

Answer: (B)

The main idea is compressing the chest enough to push blood out of the heart with each push, without causing unnecessary injury. For an adult, aiming for about 1.5 to 2 inches (roughly 5 cm) of depth with each compression gives enough force to generate blood flow while keeping the risk of serious chest injuries low. If the compressions are too shallow, like 0.5 to 1 inch, they won’t move enough blood to maintain circulation. Going deeper than the recommended range, toward 2.5 to 3 inches or more, increases the chance of rib fractures or internal injury, especially with repeated compressions. So the 1.5 to 2 inch depth is the best balance for effective, safe chest compressions in adults.

The main idea is compressing the chest enough to push blood out of the heart with each push, without causing unnecessary injury. For an adult, aiming for about 1.5 to 2 inches (roughly 5 cm) of depth with each compression gives enough force to generate blood flow while keeping the risk of serious chest injuries low. If the compressions are too shallow, like 0.5 to 1 inch, they won’t move enough blood to maintain circulation. Going deeper than the recommended range, toward 2.5 to 3 inches or more, increases the chance of rib fractures or internal injury, especially with repeated compressions. So the 1.5 to 2 inch depth is the best balance for effective, safe chest compressions in adults.