When performing an initial assessment of a postterm male neonate weighing 4,000 g (9 lb) who was admitted to the observation nursery after a vaginal birth with low forceps, the nurse detects...

When performing an initial assessment of a postterm male neonate weighing 4,000 g (9 lb) who was admitted to the observation nursery after a vaginal birth with low forceps, the nurse detects Ortolani's sign. Which of the following actions should the nurse do next?

1. Determine the length of the mother's labor.

2. Notify the primary health care provider immediately.

3. Keep the neonate under the radiant warmer for 2 hours.

4. Obtain a blood sample to check for hypoglycemia.