In fluorescein angiography, dye is injected into the eyeball for diagnosis.

You have been called for a patient who has overdosed on drugs and alcohol. The patient is responsive to painful stimuli and is breathing shallowly at eight times per minute, but exhibits no cyanosis. You should recognize and do which one of the following?

A) Inadequate breathing; administer oxygen at 15 lpm through a nonrebreather facemask. B) Adequate breathing; administer oxygen at 15 lpm through a nonrebreather facemask. C) Adequate breathing; initiate positive pressure ventilation with supplemental oxygen. D) Inadequate respirations; start positive pressure ventilation with supplemental oxygen.

To determine the vertical angulation when using the bisecting technique, the central rays of the x-ray beam should be directed:

a. perpendicular to the image receptor. b. parallel to the image receptor. c. perpendicular to the imaginary bisector. d. parallel to the imaginary bisector.