Final answer:
The nurse accesses the information to contact the patient's guardian from the patient's nurse's notes.
Step-by-step explanation:
When the nurse needs to notify a patient's guardian about the patient's health status, the nurse typically accesses the information from the patient's nurse's notes. These notes contain detailed records of the patient's condition, treatment, and any changes in health status. The nurse can use the contact information provided in the notes to reach out to the patient's guardian and update them about the patient's health.