During an assessment, a nurse finds a patient with a respiratory rate of 30 breaths per minute and an oxygen saturation of 88%. What should the nurse do next? (Select all that apply) (Select All that Apply.)

Elevate the head of the bed to improve ventilation

Reassess the oxygen saturation after 15 minutes

Have the patient perform deep breathing exercises

Increase the oxygen flow rate

Document the findings and reassess in an hour

Call for immediate medical assistance