Final answer:
Once a child starts breathing spontaneously during CPR, stop compressions, check for breathing and pulse, and if present, place the child in the recovery position.
Step-by-step explanation:
If you are performing two-rescuer CPR on a child and the child begins to breathe spontaneously, you should stop compressions and check for normal breathing and a pulse. If the child is breathing and has a pulse, you should then place the child in the recovery position to keep the airway open and clear of any obstructions. It is important to continuously monitor the child's breathing and pulse until emergency medical services arrive. Performing CPR is crucial until the child regains spontaneous contraction or is declared dead by an experienced healthcare professional, but once spontaneous breathing resumes, adjustments to the emergency care provided are necessary.