Final answer:
You should communicate about maintaining CPR quality and offer to take over the compressions to ensure they are performed correctly, with the proper rate and depth.
Step-by-step explanation:
When called to a code blue and observing that the person performing chest compressions is tiring and not allowing for complete chest recoil, your next course of action is to communicate the need to maintain CPR quality. Offer to take over compressions if you are trained, ensuring a rate of 100 compressions per minute and a depth of at least 5cm, as proper technique is critical for maintaining blood flow, especially to the brain. It is important that all medical personnel involved in a resuscitation attempt are aware of the correct compression technique, as inadequate compressions can lead to insufficient blood flow and potential harm to the patient.