A 68-year-old female patient is admitted to the hospital with a diagnosis of chronic obstructive pulmonary disease (COPD) exacerbation. During the physical assessment, the nurse notes that the patient exhibits signs of increased work of breathing, accessory muscle usage, and an elevated heart rate of 110 beats per minute. Her oxygen saturation is measured at 88% on room air. The healthcare team decides to initiate supplemental oxygen therapy.
In patients with COPD, it is crucial to monitor the delivery of oxygen therapy closely because administering too much oxygen can lead to a decrease in the drive to breathe. The nurse is aware that the optimal range for oxygen saturation in COPD patients is typically between ____% and ____% depending on the stage of the disease and individual patient factors.
Fill in the blanks with the appropriate saturation values.