Should you use 1 or 2 hands for child CPR?

For child CPR, the method you use depends on the child's age and size. For children aged 1 to puberty, you can use either one or two hands, but one hand is often sufficient and easier to manage. For infants under 1 year old, use two fingers for chest compressions. Always ensure that the compressions are firm and at an appropriate depth for the child's size.