A 72-year-old female patient with chronic obstructive pulmonary disease (COPD) is admitted to the hospital for exacerbation. The nurse notes that the patient is on high-flow oxygen therapy and is exhibiting new-onset confusion. The nursing team is concerned about the potential complications stemming from her respiratory status and oxygen therapy.
What potential complication should the nurse monitor for in this patient, considering her COPD history and current treatment with high-flow oxygen?