BLS Basic life support (Latest 2020 AHA)
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Adult chest compressions Quiz
1. Why is chest recoil important
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Ribcage gets strengthened with recoil
Heart can get injured if there’s no recoil
Chest recoil helps with oxygenation
Increased chest pressures impair blood flow returning to the heart
2. Regarding depth of chest compressions
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Compress 1/3rd the chest
Compress 5cm depth
Compress upto 4cm in adults
Compress as deep as possible
3. Which is not a feature of high quality CPR
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Depth of 1/3rd chest diameter (2inches/5cms)
Minimize interruptions
A rate of 100-120 compressions/min
Minimize chest recoil
4. Position of your hands during Chest compressions
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At 90 degrees to the floor, with straight elbows
Place them at the center of abdomen
Place them close to the neck
At 90 degrees to the floor, with elbows bent to 90 degrees
5. What happens with interruptions in chest compressions?
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Drastic improvement in perfusion
Rescuers get tired
Perfusion pressures go down
Improved output from heart
6. What happens when you compress at a faster rate than recommended 100-120 / min?
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You will get tired faster
Oxygen cannot reach lungs
Heart chambers will not have time to refill
You might break the ribcage
7. For chest compressions to be effective, the surface should be
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It doesn’t matter
Soft and fluffly to avoid injuries
Flat and firm
Surface with a bump in middle
