The nurse is caring for a school-age girl who had an arterial cardiac catheterization. The child tells the nurse that the bandage is "wet." On assessment, the bandage and bed are soaked with blood. The nurse must do which of the following FIRST?

A. Applying direct pressure at the site and one inch above the catheterization site is the immediate priority to control the bleeding and prevent further blood loss. B. Notifying the interventional cardiologist and the catheterization lab is important but should be done after initial bleeding control measures are taken. C. Placing the bed in the Trendelenburg position is not appropriate for managing active bleeding from a catheterization site. D. Reinforcing the bandage is not sufficient to control active bleeding; direct pressure is necessary.