How do you perform chest compressions when providing high quality CPR to a child victim?

To perform high-quality CPR on a child, position the child on a firm surface and use one or two hands for chest compressions, depending on the child's size. Compress the chest to a depth of about 1.5 inches at a rate of 100 to 120 compressions per minute, allowing full chest recoil between compressions. Ensure your hands are positioned in the center of the chest, just below the nipple line. If you're trained to do so, provide rescue breaths at a ratio of 30 compressions to 2 breaths.