Final answer:
When a patient in labor feels the urge to push but is only 8 cm dilated, the nurse should encourage panting with pursed lips to prevent early pushing and potential complications.
Step-by-step explanation:
If a patient in labor states, "I have to push! I have to push!" and is 8 cm dilated, the nurse should first encourage the patient to pant with pursed lips. This is because the patient is not yet fully dilated to 10 cm, which is required for safe pushing during the second stage of labor.
Panting helps to prevent the patient from bearing down too early, which can lead to cervical edema or tearing if the cervix is not fully dilated. It also helps in controlling the urge to push before it is appropriate, thus reducing the risk of complications.