The nurse is caring for a client admitted with an acute exacerbation of chronic obstructive pulmonary disease (COPD) who reports a pounding headache. Which action should the nurse take?

Elevate head of bed no higher than 30 degrees.

Affirm blood glucose is below 160 mg/dL (8.88 mmol/L)

Check for a stat intravenous diuretic prescription.

Obtain a manual blood pressure measurement.