1 1/2 x 1/2 = ________

A home care patient calls to inform the respiratory therapist that his transtracheal catheter acci-dentally fell out last night and that he was unable to reinsert it. The patient should be told to:

a. insert a dilating or stenting device. b. continue attempts to reinsert the catheter. c. use a nasal cannula and call his physician as soon as possible. d. use a nasal cannula until another transtra-cheal catheter is delivered to the home.

Which portion of the orbit is best visualized with a PA projection?

entire orbital base superior orbital margin inferior orbital margin lateral orbital margin