How should chest compressions be performed on a child over one year old?

For a child over one year old, chest compressions should be performed with one or two hands, aiming for a depth of approximately one-third the anterior-posterior (AP) diameter of the chest. This technique is crucial because it ensures that the compressions are effective in generating blood flow during cardiopulmonary resuscitation (CPR).

The intent behind using one or two hands is to adapt to the size of the child and the strength of the rescuer, making compressions both effective and manageable. The depth of one-third the AP diameter is significant because it allows for sufficient compression of the heart between the chest wall, thus facilitating adequate circulation, which is essential for re-establishing cardiac activity.

Moreover, using this depth aligns with established pediatric guidelines, emphasizing the importance of modifying techniques from adult resuscitation to suit the anatomical differences in children. The approach balances safety, effectiveness, and practicality for rescuers, enhancing the chances of a successful outcome in pediatric cardiac arrest situations.