Final answer:
A nurse's discharge summary should include recent vital signs to provide a snapshot of the patient's health status as they transfer from acute care to long-term care.
Step-by-step explanation:
When preparing a discharge summary for a client transferring from an acute care facility to a long-term care facility, the nurse should include essential medical information that ensures continuity of care. The documentation that should be included is recent vital signs, as they are critical for providing a snapshot of the patient's current health status. The discharge summary must focus on medical and care-related information rather than personal preferences or plans that are not directly pertinent to the patient's health care.