A 77-Year-Old Male Got Out of Bed, Became Dizzy, and Fell

A 77-year-old male got out of bed, became dizzy, and fell onto the floor, hitting the right side of his face. You find him sitting on the floor with his wife next to him. His wife states that he did not lose consciousness and that this has happened several times over the past few days, ever since the doctor put him on a new blood pressure medication. Presently, the patient is alert and oriented and complaining of dizziness and a headache. He has a history of coronary artery disease, emphysema, and hypertension. Which one of the following should you do first?

A) Provide supplemental oxygen to maintain a SpO₂ of 94% or greater.
B) Take manual in-line spinal stabilization and begin assessment.
C) Position the patient supine with his feet elevated and get vital signs.
D) Check the patient's airway, breathing, and circulatory status.