Which description best describes the recommended chest compression technique to maximize blood flow during compressions?

• A. increase pace above guideline
• B. interpose breaths frequently
• C. push hard and push fast
• D. minimize compression depth

Answer: (C)

During CPR the goal is to generate enough forward blood flow by creating proper pressure with each compression. The best description is pushing hard and pushing fast, because it captures both the depth and the rate needed to maximize perfusion. In adults, this means about 5 cm (2 inches) of depth at a rate of roughly 100–120 compressions per minute, with full recoil after each press so the heart can fill again. Keeping interruptions to a minimum preserves the perfusion pressure you've built.其他 options don’t fit: going faster without maintaining sufficient depth reduces the amount of blood moved with each squeeze; interposing breaths during compressions breaks the flow and lowers overall blood flow; and compressing too shallowly directly lowers the pressure generated and thus the blood flow.