The core principles of CPR - ventilation to provide breathing and chest compressions to support the circulation - apply equally to children and adults. Many children do not receive CPR because potential rescuers are not sure if there are specific methods recommended for children, and are afraid of causing harm. This fear is unfounded; it is far better to use the adult CPR sequence for the resuscitation of a child than to do nothing. When performing chest compressions, compress the child's chest by 1/3 to 1/2 of its depth - don't be afraid to push hard. Although slightly different techniques are taught to those people (particularly healthcare workers) who have special responsibilities for the care of children, the differences are not crucial, and it is far more important to do something using the techniques you have been taught.