In one-rescuer child CPR, what depth, rate, and ratio are recommended?

• A. 1 inch depth, 60 compressions per minute
• B. 2 inches deep, 100 compressions per minute, 30:2
• C. 2 inches deep, 80 compressions per minute, 15:2
• D. 1.5 inches deep, 120 compressions per minute, 15:2

Answer: (B)

For one-rescuer CPR in a child, the goal is to deliver enough blood flow with each compression while providing breaths effectively. Chest compressions should be about 2 inches (5 cm) deep to generate adequate perfusion; shallower depths don’t create enough pressure to move blood through the heart and arteries. The compressions should occur at a steady cadence of roughly 100 per minute, which balances effective circulation with enough time for full chest recoil between compressions. After every 30 compressions, give 2 rescue breaths if you’re trained to do so, forming a 30:2 cycle. This combination—2 inches deep, about 100/min, and a 30:2 ratio—is the recommended approach for a single rescuer. The other options don’t fit because they mix in too shallow depth, an incorrect rate, or a ratio that applies to two rescuers (15:2) rather than one.